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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `NaiveDateTime` struct in crate `chrono`."><meta name="keywords" content="rust, rustlang, rust-lang, NaiveDateTime"><title>chrono::naive::NaiveDateTime - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../chrono/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Struct NaiveDateTime</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.checked_add_signed">checked_add_signed</a><a href="#method.checked_sub_signed">checked_sub_signed</a><a href="#method.date">date</a><a href="#method.format">format</a><a href="#method.format_with_items">format_with_items</a><a href="#method.from_timestamp">from_timestamp</a><a href="#method.from_timestamp_opt">from_timestamp_opt</a><a href="#method.new">new</a><a href="#method.parse_from_str">parse_from_str</a><a href="#method.signed_duration_since">signed_duration_since</a><a href="#method.time">time</a><a href="#method.timestamp">timestamp</a><a href="#method.timestamp_millis">timestamp_millis</a><a href="#method.timestamp_nanos">timestamp_nanos</a><a href="#method.timestamp_subsec_micros">timestamp_subsec_micros</a><a href="#method.timestamp_subsec_millis">timestamp_subsec_millis</a><a href="#method.timestamp_subsec_nanos">timestamp_subsec_nanos</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Add%3CDuration%3E">Add&lt;Duration&gt;</a><a href="#impl-Add%3CFixedOffset%3E">Add&lt;FixedOffset&gt;</a><a href="#impl-AddAssign%3CDuration%3E">AddAssign&lt;Duration&gt;</a><a href="#impl-Clone">Clone</a><a href="#impl-Copy">Copy</a><a href="#impl-Datelike">Datelike</a><a href="#impl-Debug">Debug</a><a href="#impl-Display">Display</a><a href="#impl-Eq">Eq</a><a href="#impl-FromStr">FromStr</a><a href="#impl-Hash">Hash</a><a href="#impl-Ord">Ord</a><a href="#impl-PartialEq%3CNaiveDateTime%3E">PartialEq&lt;NaiveDateTime&gt;</a><a href="#impl-PartialOrd%3CNaiveDateTime%3E">PartialOrd&lt;NaiveDateTime&gt;</a><a href="#impl-StructuralEq">StructuralEq</a><a href="#impl-StructuralPartialEq">StructuralPartialEq</a><a href="#impl-Sub%3CDuration%3E">Sub&lt;Duration&gt;</a><a href="#impl-Sub%3CFixedOffset%3E">Sub&lt;FixedOffset&gt;</a><a href="#impl-Sub%3CNaiveDateTime%3E">Sub&lt;NaiveDateTime&gt;</a><a href="#impl-SubAssign%3CDuration%3E">SubAssign&lt;Duration&gt;</a><a href="#impl-Timelike">Timelike</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow&lt;T&gt;</a><a href="#impl-BorrowMut%3CT%3E">BorrowMut&lt;T&gt;</a><a href="#impl-From%3CT%3E">From&lt;T&gt;</a><a href="#impl-Into%3CU%3E">Into&lt;U&gt;</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-ToString">ToString</a><a href="#impl-TryFrom%3CU%3E">TryFrom&lt;U&gt;</a><a href="#impl-TryInto%3CU%3E">TryInto&lt;U&gt;</a></div></div><p class='location'><a href='../index.html'>chrono</a>::<wbr><a href='index.html'>naive</a></p><script>window.sidebarCurrent = {name: 'NaiveDateTime', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#55-58' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../index.html'>chrono</a>::<wbr><a href='index.html'>naive</a>::<wbr><a class="struct" href=''>NaiveDateTime</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'>pub struct NaiveDateTime { /* fields omitted */ }</pre></div><div class='docblock'><p>ISO 8601 combined date and time without timezone.</p>
<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
<p><code>NaiveDateTime</code> is commonly created from <a href="./struct.NaiveDate.html"><code>NaiveDate</code></a>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);</pre></div>
<p>You can use typical <a href="../trait.Datelike.html">date-like</a> and
<a href="../trait.Timelike.html">time-like</a> methods,
provided that relevant traits are in the scope.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">Datelike</span>, <span class="ident">Timelike</span>, <span class="ident">Weekday</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">num_seconds_from_midnight</span>(), <span class="number">33011</span>);</pre></div>
</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#60-696' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.new' class="method"><code id='new.v'>pub fn <a href='#method.new' class='fnname'>new</a>(date: <a class="struct" href="../../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>, time: <a class="struct" href="../../chrono/naive/struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#78-80' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> from date and time components.
Equivalent to <a href="./struct.NaiveDate.html#method.and_time"><code>date.and_time(time)</code></a>
and many other helper constructors on <code>NaiveDate</code>.</p>
<h1 id="example-1" class="section-header"><a href="#example-1">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveTime</span>, <span class="ident">NaiveDateTime</span>};
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">3</span>);
<span class="kw">let</span> <span class="ident">t</span> <span class="op">=</span> <span class="ident">NaiveTime</span>::<span class="ident">from_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">new</span>(<span class="ident">d</span>, <span class="ident">t</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">date</span>(), <span class="ident">d</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">time</span>(), <span class="ident">t</span>);</pre></div>
</div><h4 id='method.from_timestamp' class="method"><code id='from_timestamp.v'>pub fn <a href='#method.from_timestamp' class='fnname'>from_timestamp</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#108-111' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka &quot;UNIX timestamp&quot;)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>For a non-naive version of this function see
<a href="../offset/trait.TimeZone.html#method.timestamp"><code>TimeZone::timestamp</code></a>.</p>
<p>The nanosecond part can exceed 1,000,000,000 in order to represent the
<a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>. (The true &quot;UNIX
timestamp&quot; cannot represent a leap second unambiguously.)</p>
<p>Panics on the out-of-range number of seconds and/or invalid nanosecond.</p>
<h1 id="example-2" class="section-header"><a href="#example-2">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp</span>(<span class="number">0</span>, <span class="number">42_000_000</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>, <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">42</span>));
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp</span>(<span class="number">1_000_000_000</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>, <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>));</pre></div>
</div><h4 id='method.from_timestamp_opt' class="method"><code id='from_timestamp_opt.v'>pub fn <a href='#method.from_timestamp_opt' class='fnname'>from_timestamp_opt</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#139-148' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka &quot;UNIX timestamp&quot;)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>The nanosecond part can exceed 1,000,000,000
in order to represent the <a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>.
(The true &quot;UNIX timestamp&quot; cannot represent a leap second unambiguously.)</p>
<p>Returns <code>None</code> on the out-of-range number of seconds and/or invalid nanosecond.</p>
<h1 id="example-3" class="section-header"><a href="#example-3">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">i64</span>;
<span class="kw">let</span> <span class="ident">from_timestamp_opt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp_opt</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">0</span>).<span class="ident">is_some</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">999_999_999</span>).<span class="ident">is_some</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">1_500_000_000</span>).<span class="ident">is_some</span>()); <span class="comment">// leap second</span>
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">2_000_000_000</span>).<span class="ident">is_none</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="ident">i64</span>::<span class="ident">MAX</span>, <span class="number">0</span>).<span class="ident">is_none</span>());</pre></div>
</div><h4 id='method.parse_from_str' class="method"><code id='parse_from_str.v'>pub fn <a href='#method.parse_from_str' class='fnname'>parse_from_str</a>(s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, fmt: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../../chrono/format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#211-215' title='goto source code'>[src]</a></h4><div class='docblock'><p>Parses a string with the specified format string and returns a new <code>NaiveDateTime</code>.
See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<h1 id="example-4" class="section-header"><a href="#example-4">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">parse_from_str</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">parse_from_str</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2015-09-05 23:56:04&quot;</span>, <span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;5sep2015pm012345.6789&quot;</span>, <span class="string">&quot;%d%b%Y%p%I%M%S%.f&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms_micro</span>(<span class="number">13</span>, <span class="number">23</span>, <span class="number">45</span>, <span class="number">678_900</span>)));</pre></div>
<p>Offset is ignored for the purpose of parsing.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2014-5-17T12:34:56+09:30&quot;</span>, <span class="string">&quot;%Y-%m-%dT%H:%M:%S%z&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">17</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
<p><a href="./struct.NaiveTime.html#leap-second-handling">Leap seconds</a> are correctly handled by
treating any time of the form <code>hh:mm:60</code> as a leap second.
(This equally applies to the formatting, so the round trip is possible.)</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2015-07-01 08:59:60.123&quot;</span>, <span class="string">&quot;%Y-%m-%d %H:%M:%S%.f&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_123</span>)));</pre></div>
<p>Missing seconds are assumed to be zero,
but out-of-bound times or insufficient fields are errors otherwise.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 7:15&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1994</span>, <span class="number">9</span>, <span class="number">4</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">15</span>, <span class="number">0</span>)));
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;04m33s&quot;</span>, <span class="string">&quot;%Mm%Ss&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 12&quot;</span>, <span class="string">&quot;%y/%m/%d %H&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 17:60&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 24:00:00&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M:%S&quot;</span>).<span class="ident">is_err</span>());</pre></div>
<p>All parsed fields should be consistent to each other, otherwise it's an error.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">fmt</span> <span class="op">=</span> <span class="string">&quot;%Y-%m-%d %H:%M:%S = UNIX timestamp %s&quot;</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2001-09-09 01:46:39 = UNIX timestamp 999999999&quot;</span>, <span class="ident">fmt</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;1970-01-01 00:00:00 = UNIX timestamp 1&quot;</span>, <span class="ident">fmt</span>).<span class="ident">is_err</span>());</pre></div>
</div><h4 id='method.date' class="method"><code id='date.v'>pub fn <a href='#method.date' class='fnname'>date</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#228-230' title='goto source code'>[src]</a></h4><div class='docblock'><p>Retrieves a date component.</p>
<h1 id="example-5" class="section-header"><a href="#example-5">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">date</span>(), <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>));</pre></div>
</div><h4 id='method.time' class="method"><code id='time.v'>pub fn <a href='#method.time' class='fnname'>time</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#243-245' title='goto source code'>[src]</a></h4><div class='docblock'><p>Retrieves a time component.</p>
<h1 id="example-6" class="section-header"><a href="#example-6">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveTime</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">time</span>(), <span class="ident">NaiveTime</span>::<span class="ident">from_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>));</pre></div>
</div><h4 id='method.timestamp' class="method"><code id='timestamp.v'>pub fn <a href='#method.timestamp' class='fnname'>timestamp</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#270-275' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of non-leap seconds since the midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<h1 id="example-7" class="section-header"><a href="#example-7">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">980</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="number">1</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="number">1_000_000_000</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1969</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="op">-</span><span class="number">1</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="op">-</span><span class="number">62198755200</span>);</pre></div>
</div><h4 id='method.timestamp_millis' class="method"><code id='timestamp_millis.v'>pub fn <a href='#method.timestamp_millis' class='fnname'>timestamp_millis</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#302-305' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of non-leap <em>milliseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<p>Note also that this does reduce the number of years that can be
represented from ~584 Billion to ~584 Million. (If this is a problem,
please file an issue to let me know what domain needs millisecond
precision over billions of years, I'm curious.)</p>
<h1 id="example-8" class="section-header"><a href="#example-8">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">444</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="number">1_444</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>, <span class="number">555</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="number">1_000_000_000_555</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1969</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">100</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="op">-</span><span class="number">900</span>);</pre></div>
</div><h4 id='method.timestamp_nanos' class="method"><code id='timestamp_nanos.v'>pub fn <a href='#method.timestamp_nanos' class='fnname'>timestamp_nanos</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#341-344' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of non-leap <em>nanoseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
<p>Note also that this does reduce the number of years that can be
represented from ~584 Billion to ~584 years. The dates that can be
represented as nanoseconds are between 1677-09-21T00:12:44.0 and
2262-04-11T23:47:16.854775804.</p>
<p>(If this is a problem, please file an issue to let me know what domain
needs nanosecond precision over millennia, I'm curious.)</p>
<h1 id="example-9" class="section-header"><a href="#example-9">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">444</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_nanos</span>(), <span class="number">1_000_000_444</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms_nano</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>, <span class="number">555</span>);
<span class="kw">const</span> <span class="ident">A_BILLION</span>: <span class="ident">i64</span> <span class="op">=</span> <span class="number">1_000_000_000</span>;
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> <span class="ident">dt</span>.<span class="ident">timestamp_nanos</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">nanos</span>, <span class="number">1_000_000_000_000_000_555</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(
<span class="ident">dt</span>,
<span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp</span>(<span class="ident">nanos</span> <span class="op">/</span> <span class="ident">A_BILLION</span>, (<span class="ident">nanos</span> <span class="op">%</span> <span class="ident">A_BILLION</span>) <span class="kw">as</span> <span class="ident">u32</span>)
);</pre></div>
</div><h4 id='method.timestamp_subsec_millis' class="method"><code id='timestamp_subsec_millis.v'>pub fn <a href='#method.timestamp_subsec_millis' class='fnname'>timestamp_subsec_millis</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#363-365' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of milliseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999.</p>
<h1 id="example-10" class="section-header"><a href="#example-10">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_millis</span>(), <span class="number">123</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_millis</span>(), <span class="number">1_234</span>);</pre></div>
</div><h4 id='method.timestamp_subsec_micros' class="method"><code id='timestamp_subsec_micros.v'>pub fn <a href='#method.timestamp_subsec_micros' class='fnname'>timestamp_subsec_micros</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#384-386' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of microseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999.</p>
<h1 id="example-11" class="section-header"><a href="#example-11">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_micros</span>(), <span class="number">123_456</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_micros</span>(), <span class="number">1_234_567</span>);</pre></div>
</div><h4 id='method.timestamp_subsec_nanos' class="method"><code id='timestamp_subsec_nanos.v'>pub fn <a href='#method.timestamp_subsec_nanos' class='fnname'>timestamp_subsec_nanos</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#405-407' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of nanoseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999,999.</p>
<h1 id="example-12" class="section-header"><a href="#example-12">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_nanos</span>(), <span class="number">123_456_789</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_nanos</span>(), <span class="number">1_234_567_890</span>);</pre></div>
</div><h4 id='method.checked_add_signed' class="method"><code id='checked_add_signed.v'>pub fn <a href='#method.checked_add_signed' class='fnname'>checked_add_signed</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#483-493' title='goto source code'>[src]</a></h4><div class='docblock'><p>Adds given <code>Duration</code> to the current date and time.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Returns <code>None</code> when it will result in overflow.</p>
<h1 id="example-13" class="section-header"><a href="#example-13">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">450</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>)));</pre></div>
<p>Overflow returns <code>None</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1_000_000_000</span>)), <span class="prelude-val">None</span>);</pre></div>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="op">-</span><span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">800</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">10</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">10</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>)));</pre></div>
</div><h4 id='method.checked_sub_signed' class="method"><code id='checked_sub_signed.v'>pub fn <a href='#method.checked_sub_signed' class='fnname'>checked_sub_signed</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#565-575' title='goto source code'>[src]</a></h4><div class='docblock'><p>Subtracts given <code>Duration</code> from the current date and time.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Returns <code>None</code> when it will result in overflow.</p>
<h1 id="example-14" class="section-header"><a href="#example-14">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">670</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>)));</pre></div>
<p>Overflow returns <code>None</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1_000_000_000</span>)), <span class="prelude-val">None</span>);</pre></div>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">200</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>)));</pre></div>
</div><h4 id='method.signed_duration_since' class="method"><code id='signed_duration_since.v'>pub fn <a href='#method.signed_duration_since' class='fnname'>signed_duration_since</a>(self, rhs: <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#621-623' title='goto source code'>[src]</a></h4><div class='docblock'><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<h1 id="example-15" class="section-header"><a href="#example-15">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">signed_duration_since</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span> <span class="op">+</span> <span class="number">1</span>));
<span class="comment">// July 8 is 190th day in the year 2016</span>
<span class="kw">let</span> <span class="ident">d0</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>).<span class="ident">signed_duration_since</span>(<span class="ident">d0</span>.<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">189</span> <span class="op">*</span> <span class="number">86_400</span> <span class="op">+</span> <span class="number">7</span> <span class="op">*</span> <span class="number">60</span> <span class="op">+</span> <span class="number">6</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre></div>
<p>Leap seconds are handled, but the subtraction assumes that
there were no other leap seconds happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">signed_duration_since</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).<span class="ident">signed_duration_since</span>(<span class="ident">leap</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre></div>
</div><h4 id='method.format_with_items' class="method"><code id='format_with_items.v'>pub fn <a href='#method.format_with_items' class='fnname'>format_with_items</a>&lt;'a, I, B&gt;(&amp;self, items: I) -&gt; <a class="struct" href="../../chrono/format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a>&lt;I&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>&lt;Item = B&gt; + <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,<br>&nbsp;&nbsp;&nbsp;&nbsp;B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;<a class="enum" href="../../chrono/format/enum.Item.html" title="enum chrono::format::Item">Item</a>&lt;'a&gt;&gt;,&nbsp;</span></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#654-657' title='goto source code'>[src]</a></h4><div class='docblock'><p>Formats the combined date and time with the specified formatting items.
Otherwise it is the same as the ordinary <a href="#method.format"><code>format</code></a> method.</p>
<p>The <code>Iterator</code> of items should be <code>Clone</code>able,
since the resulting <code>DelayedFormat</code> value may be formatted multiple times.</p>
<h1 id="example-16" class="section-header"><a href="#example-16">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">format</span>::<span class="ident">strftime</span>::<span class="ident">StrftimeItems</span>;
<span class="kw">let</span> <span class="ident">fmt</span> <span class="op">=</span> <span class="ident">StrftimeItems</span>::<span class="ident">new</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format_with_items</span>(<span class="ident">fmt</span>.<span class="ident">clone</span>()).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);</pre></div>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format_with_items</span>(<span class="ident">fmt</span>)), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);</pre></div>
</div><h4 id='method.format' class="method"><code id='format.v'>pub fn <a href='#method.format' class='fnname'>format</a>&lt;'a&gt;(&amp;self, fmt: &amp;'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="struct" href="../../chrono/format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a>&lt;<a class="struct" href="../../chrono/format/strftime/struct.StrftimeItems.html" title="struct chrono::format::strftime::StrftimeItems">StrftimeItems</a>&lt;'a&gt;&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#693-695' title='goto source code'>[src]</a></h4><div class='docblock'><p>Formats the combined date and time with the specified format string.
See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<p>This returns a <code>DelayedFormat</code>,
which gets converted to a string only when actual formatting happens.
You may use the <code>to_string</code> method to get a <code>String</code>,
or just feed it into <code>print!</code> and other formatting macros.
(In this way it avoids the redundant memory allocation.)</p>
<p>A wrong format string does <em>not</em> issue an error immediately.
Rather, converting or formatting the <code>DelayedFormat</code> fails.
You are recommended to immediately use <code>DelayedFormat</code> for this reason.</p>
<h1 id="example-17" class="section-header"><a href="#example-17">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;around %l %p on %b %-d&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;around 11 PM on Sep 5&quot;</span>);</pre></div>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>)), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;around %l %p on %b %-d&quot;</span>)), <span class="string">&quot;around 11 PM on Sep 5&quot;</span>);</pre></div>
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Add%3CDuration%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">Duration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Add%3CDuration%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1251-1258' title='goto source code'>[src]</a></h3><div class='docblock'><p>An addition of <code>Duration</code> to <code>NaiveDateTime</code> yields another <code>NaiveDateTime</code>.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Panics on underflow or overflow.
Use <a href="#method.checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to detect that.</p>
<h1 id="example-45" class="section-header"><a href="#example-45">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>), <span class="ident">hms</span>(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">365</span>),
<span class="ident">from_ymd</span>(<span class="number">2017</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">450</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>));</pre></div>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="op">-</span><span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">800</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">10</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">10</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>));</pre></div>
</div><div class='impl-items'><h4 id='associatedtype.Output-4' class="type"><code id='Output.t-4'>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></h4><div class='docblock'><p>The resulting type after applying the <code>+</code> operator.</p>
</div><h4 id='method.add-1' class="method hidden"><code id='add.v-1'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add' class='fnname'>add</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1255-1257' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>+</code> operation.</p>
</div></div><h3 id='impl-Add%3CFixedOffset%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;<a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Add%3CFixedOffset%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#171-178' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output-3' class="type"><code id='Output.t-3'>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></h4><div class='docblock'><p>The resulting type after applying the <code>+</code> operator.</p>
</div><h4 id='method.add' class="method hidden"><code id='add.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add' class='fnname'>add</a>(self, rhs: <a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#175-177' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>+</code> operation.</p>
</div></div><h3 id='impl-AddAssign%3CDuration%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.AddAssign.html" title="trait core::ops::arith::AddAssign">AddAssign</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">Duration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-AddAssign%3CDuration%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1260-1265' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.add_assign' class="method hidden"><code id='add_assign.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.AddAssign.html#tymethod.add_assign' class='fnname'>add_assign</a>(&amp;mut self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1262-1264' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>+=</code> operation.</p>
</div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method hidden"><code id='clone_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Copy' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Copy' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Datelike' class='impl'><code class='in-band'>impl <a class="trait" href="../../chrono/trait.Datelike.html" title="trait chrono::Datelike">Datelike</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Datelike' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#698-1014' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.year' class="method"><code id='year.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.year' class='fnname'>year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#712-714' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the year number in the <a href="./index.html#calendar-date">calendar date</a>.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.year"><code>NaiveDate::year</code></a> method.</p>
<h1 id="example-18" class="section-header"><a href="#example-18">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">year</span>(), <span class="number">2015</span>);</pre></div>
</div><h4 id='method.month' class="method"><code id='month.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.month' class='fnname'>month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#731-733' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month"><code>NaiveDate::month</code></a> method.</p>
<h1 id="example-19" class="section-header"><a href="#example-19">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month</span>(), <span class="number">9</span>);</pre></div>
</div><h4 id='method.month0' class="method"><code id='month0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.month0' class='fnname'>month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#750-752' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month0"><code>NaiveDate::month0</code></a> method.</p>
<h1 id="example-20" class="section-header"><a href="#example-20">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month0</span>(), <span class="number">8</span>);</pre></div>
</div><h4 id='method.day' class="method"><code id='day.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.day' class='fnname'>day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#769-771' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day"><code>NaiveDate::day</code></a> method.</p>
<h1 id="example-21" class="section-header"><a href="#example-21">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day</span>(), <span class="number">25</span>);</pre></div>
</div><h4 id='method.day0' class="method"><code id='day0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.day0' class='fnname'>day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#788-790' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day0"><code>NaiveDate::day0</code></a> method.</p>
<h1 id="example-22" class="section-header"><a href="#example-22">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day0</span>(), <span class="number">24</span>);</pre></div>
</div><h4 id='method.ordinal' class="method"><code id='ordinal.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.ordinal' class='fnname'>ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#807-809' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal"><code>NaiveDate::ordinal</code></a> method.</p>
<h1 id="example-23" class="section-header"><a href="#example-23">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal</span>(), <span class="number">268</span>);</pre></div>
</div><h4 id='method.ordinal0' class="method"><code id='ordinal0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.ordinal0' class='fnname'>ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#826-828' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal0"><code>NaiveDate::ordinal0</code></a> method.</p>
<h1 id="example-24" class="section-header"><a href="#example-24">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal0</span>(), <span class="number">267</span>);</pre></div>
</div><h4 id='method.weekday' class="method"><code id='weekday.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.weekday' class='fnname'>weekday</a>(&amp;self) -&gt; <a class="enum" href="../../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#843-845' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the day of week.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.weekday"><code>NaiveDate::weekday</code></a> method.</p>
<h1 id="example-25" class="section-header"><a href="#example-25">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>, <span class="ident">Weekday</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);</pre></div>
</div><h4 id='method.iso_week' class="method hidden"><code id='iso_week.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.iso_week' class='fnname'>iso_week</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#848-850' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns the ISO week.</p>
</div><h4 id='method.with_year' class="method"><code id='with_year.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_year' class='fnname'>with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#869-871' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the year number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_year"><code>NaiveDate::with_year</code></a> method.</p>
<h1 id="example-26" class="section-header"><a href="#example-26">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="number">2016</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="op">-</span><span class="number">308</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div><h4 id='method.with_month' class="method"><code id='with_month.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_month' class='fnname'>with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#891-893' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month"><code>NaiveDate::with_month</code></a> method.</p>
<h1 id="example-27" class="section-header"><a href="#example-27">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">10</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">13</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">2</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id='method.with_month0' class="method"><code id='with_month0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_month0' class='fnname'>with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#913-915' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month0"><code>NaiveDate::with_month0</code></a> method.</p>
<h1 id="example-28" class="section-header"><a href="#example-28">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">9</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">12</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">1</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre></div>
</div><h4 id='method.with_day' class="method"><code id='with_day.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_day' class='fnname'>with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#934-936' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day"><code>NaiveDate::with_day</code></a> method.</p>
<h1 id="example-29" class="section-header"><a href="#example-29">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">30</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">31</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id='method.with_day0' class="method"><code id='with_day0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_day0' class='fnname'>with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#955-957' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day0"><code>NaiveDate::with_day0</code></a> method.</p>
<h1 id="example-30" class="section-header"><a href="#example-30">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">29</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">30</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre></div>
</div><h4 id='method.with_ordinal' class="method"><code id='with_ordinal.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_ordinal' class='fnname'>with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#983-985' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal"><code>NaiveDate::with_ordinal</code></a> method.</p>
<h1 id="example-31" class="section-header"><a href="#example-31">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div><h4 id='method.with_ordinal0' class="method"><code id='with_ordinal0.v'>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_ordinal0' class='fnname'>with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1011-1013' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal0"><code>NaiveDate::with_ordinal0</code></a> method.</p>
<h1 id="example-32" class="section-header"><a href="#example-32">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre></div>
</div><h4 id='method.year_ce' class="method hidden"><code id='year_ce.v'>fn <a href='../../chrono/trait.Datelike.html#method.year_ce' class='fnname'>year_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code><a class='srclink' href='../../src/chrono/lib.rs.html#880-887' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns the absolute year number starting from 1 with a boolean flag, which is false when the year predates the epoch (BCE/BC) and true otherwise (CE/AD). <a href="../../chrono/trait.Datelike.html#method.year_ce">Read more</a></p>
</div><h4 id='method.num_days_from_ce' class="method hidden"><code id='num_days_from_ce.v'>fn <a href='../../chrono/trait.Datelike.html#method.num_days_from_ce' class='fnname'>num_days_from_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a class='srclink' href='../../src/chrono/lib.rs.html#972-987' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Counts the days in the proleptic Gregorian calendar, with January 1, Year 1 (CE) as day 1. <a href="../../chrono/trait.Datelike.html#method.num_days_from_ce">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1419-1423' title='goto source code'>[src]</a></h3><div class='docblock'><p>The <code>Debug</code> output of the naive date and time <code>dt</code> is the same as
<a href="../format/strftime/index.html"><code>dt.format(&quot;%Y-%m-%dT%H:%M:%S%.f&quot;)</code></a>.</p>
<p>The string printed can be readily parsed via the <code>parse</code> method on <code>str</code>.</p>
<p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn't matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h1 id="example-41" class="section-header"><a href="#example-41">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2016-11-15T07:39:24&quot;</span>);</pre></div>
<p>Leap seconds may also be used.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2015-06-30T23:59:60.500&quot;</span>);</pre></div>
</div><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1420-1422' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-Display' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Display' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1450-1454' title='goto source code'>[src]</a></h3><div class='docblock'><p>The <code>Debug</code> output of the naive date and time <code>dt</code> is the same as
<a href="../format/strftime/index.html"><code>dt.format(&quot;%Y-%m-%d %H:%M:%S%.f&quot;)</code></a>.</p>
<p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn't matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h1 id="example-42" class="section-header"><a href="#example-42">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2016-11-15 07:39:24&quot;</span>);</pre></div>
<p>Leap seconds may also be used.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2015-06-30 23:59:60.500&quot;</span>);</pre></div>
</div><div class='impl-items'><h4 id='method.fmt-1' class="method hidden"><code id='fmt.v-1'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1451-1453' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-Eq' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-FromStr' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html" title="trait core::str::FromStr">FromStr</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-FromStr' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1472-1495' title='goto source code'>[src]</a></h3><div class='docblock'><p>Parsing a <code>str</code> into a <code>NaiveDateTime</code> uses the same format,
<a href="../format/strftime/index.html"><code>%Y-%m-%dT%H:%M:%S%.f</code></a>, as in <code>Debug</code>.</p>
<h1 id="example-46" class="section-header"><a href="#example-46">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">18</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">&quot;2015-09-18T23:56:04&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>(), <span class="prelude-val">Ok</span>(<span class="ident">dt</span>));
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">12345</span>, <span class="number">6</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">7</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>); <span class="comment">// leap second</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">&quot;+12345-6-7T7:59:60.5&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>(), <span class="prelude-val">Ok</span>(<span class="ident">dt</span>));
<span class="macro">assert</span><span class="macro">!</span>(<span class="string">&quot;foo&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>().<span class="ident">is_err</span>());</pre></div>
</div><div class='impl-items'><h4 id='associatedtype.Err' class="type"><code id='Err.t'>type <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#associatedtype.Err' class="type">Err</a> = <a class="struct" href="../../chrono/format/struct.ParseError.html" title="struct chrono::format::ParseError">ParseError</a></code></h4><div class='docblock'><p>The associated error which can be returned from parsing.</p>
</div><h4 id='method.from_str' class="method hidden"><code id='from_str.v'>fn <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str' class='fnname'>from_str</a>(s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../../chrono/format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1475-1494' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Parses a string <code>s</code> to return a value of this type. <a href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str">Read more</a></p>
</div></div><h3 id='impl-Hash' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Hash' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1189-1194' title='goto source code'>[src]</a></h3><div class='docblock'><p><code>NaiveDateTime</code> can be used as a key to the hash maps (in principle).</p>
<p>Practically this also takes account of fractional seconds, so it is not recommended.
(For the obvious reason this also distinguishes leap seconds from non-leap seconds.)</p>
</div><div class='impl-items'><h4 id='method.hash' class="method hidden"><code id='hash.v'>fn <a href='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash' class='fnname'>hash</a>&lt;H:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>&gt;(&amp;self, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>H)</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1190-1193' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Feeds this value into the given [<code>Hasher</code>]. <a href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash">Read more</a></p>
</div><h4 id='method.hash_slice' class="method hidden"><code id='hash_slice.v'>fn <a href='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice' class='fnname'>hash_slice</a>&lt;H&gt;(data: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[Self]</a>, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>H) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;H: <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>,&nbsp;</span></code><span class='since' title='Stable since Rust version 1.3.0'>1.3.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/hash/mod.rs.html#194-201' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Feeds a slice of this type into the given [<code>Hasher</code>]. <a href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice">Read more</a></p>
</div></div><h3 id='impl-Ord' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Ord' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.cmp' class="method hidden"><code id='cmp.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#tymethod.cmp' class='fnname'>cmp</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method returns an [<code>Ordering</code>] between <code>self</code> and <code>other</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#tymethod.cmp">Read more</a></p>
</div><h4 id='method.max' class="method hidden"><code id='max.v'><span class="docblock attributes">#[must_use]
</span>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.max' class='fnname'>max</a>(self, other: Self) -&gt; Self</code><span class='since' title='Stable since Rust version 1.21.0'>1.21.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#599-604' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Compares and returns the maximum of two values. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.max">Read more</a></p>
</div><h4 id='method.min' class="method hidden"><code id='min.v'><span class="docblock attributes">#[must_use]
</span>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.min' class='fnname'>min</a>(self, other: Self) -&gt; Self</code><span class='since' title='Stable since Rust version 1.21.0'>1.21.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#619-624' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Compares and returns the minimum of two values. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.min">Read more</a></p>
</div><h4 id='method.clamp' class="method hidden"><code id='clamp.v'><span class="docblock attributes">#[must_use]
</span>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.clamp' class='fnname'>clamp</a>(self, min: Self, max: Self) -&gt; Self</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#646-658' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>clamp</code>)</div></div><div class='docblock hidden'><p>Restrict a value to a certain interval. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.clamp">Read more</a></p>
</div></div><h3 id='impl-PartialEq%3CNaiveDateTime%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-PartialEq%3CNaiveDateTime%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.eq' class="method hidden"><code id='eq.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method hidden"><code id='ne.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 id='impl-PartialOrd%3CNaiveDateTime%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-PartialOrd%3CNaiveDateTime%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.partial_cmp' class="method hidden"><code id='partial_cmp.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp' class='fnname'>partial_cmp</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method returns an ordering between <code>self</code> and <code>other</code> values if one exists. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp">Read more</a></p>
</div><h4 id='method.lt' class="method hidden"><code id='lt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.lt' class='fnname'>lt</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests less than (for <code>self</code> and <code>other</code>) and is used by the <code>&lt;</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.lt">Read more</a></p>
</div><h4 id='method.le' class="method hidden"><code id='le.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.le' class='fnname'>le</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests less than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>&lt;=</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.le">Read more</a></p>
</div><h4 id='method.gt' class="method hidden"><code id='gt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.gt' class='fnname'>gt</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests greater than (for <code>self</code> and <code>other</code>) and is used by the <code>&gt;</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.gt">Read more</a></p>
</div><h4 id='method.ge' class="method hidden"><code id='ge.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.ge' class='fnname'>ge</a>(&amp;self, other: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests greater than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>&gt;=</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.ge">Read more</a></p>
</div></div><h3 id='impl-StructuralEq' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.StructuralEq.html" title="trait core::marker::StructuralEq">StructuralEq</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-StructuralEq' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-StructuralPartialEq' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-StructuralPartialEq' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#54' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Sub%3CDuration%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">Duration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3CDuration%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1321-1328' title='goto source code'>[src]</a></h3><div class='docblock'><p>A subtraction of <code>Duration</code> from <code>NaiveDateTime</code> yields another <code>NaiveDateTime</code>.
It is the same as the addition with a negated <code>Duration</code>.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Panics on underflow or overflow.
Use <a href="#method.checked_sub_signed"><code>NaiveDateTime::checked_sub_signed</code></a> to detect that.</p>
<h1 id="example-43" class="section-header"><a href="#example-43">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>), <span class="ident">hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">365</span>),
<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">670</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>));</pre></div>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">200</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">60</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>));</pre></div>
</div><div class='impl-items'><h4 id='associatedtype.Output-1' class="type"><code id='Output.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></h4><div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub-1' class="method hidden"><code id='sub.v-1'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1325-1327' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-Sub%3CFixedOffset%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3CFixedOffset%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#180-187' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output' class="type"><code id='Output.t'>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></h4><div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub' class="method hidden"><code id='sub.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#184-186' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-Sub%3CNaiveDateTime%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3CNaiveDateTime%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1383-1390' title='goto source code'>[src]</a></h3><div class='docblock'><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<p>The implementation is a wrapper around
<a href="#method.signed_duration_since"><code>NaiveDateTime::signed_duration_since</code></a>.</p>
<h1 id="example-44" class="section-header"><a href="#example-44">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>), <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span> <span class="op">+</span> <span class="number">1</span>));
<span class="comment">// July 8 is 190th day in the year 2016</span>
<span class="kw">let</span> <span class="ident">d0</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>) <span class="op">-</span> <span class="ident">d0</span>.<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">189</span> <span class="op">*</span> <span class="number">86_400</span> <span class="op">+</span> <span class="number">7</span> <span class="op">*</span> <span class="number">60</span> <span class="op">+</span> <span class="number">6</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre></div>
<p>Leap seconds are handled, but the subtraction assumes that
there were no other leap seconds happened.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>) <span class="op">-</span> <span class="ident">leap</span>,
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre></div>
</div><div class='impl-items'><h4 id='associatedtype.Output-2' class="type"><code id='Output.t-2'>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code></h4><div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub-2' class="method hidden"><code id='sub.v-2'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1387-1389' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-SubAssign%3CDuration%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.SubAssign.html" title="trait core::ops::arith::SubAssign">SubAssign</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">Duration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-SubAssign%3CDuration%3E' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1330-1335' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sub_assign' class="method hidden"><code id='sub_assign.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.SubAssign.html#tymethod.sub_assign' class='fnname'>sub_assign</a>(&amp;mut self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1332-1334' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the <code>-=</code> operation.</p>
</div></div><h3 id='impl-Timelike' class='impl'><code class='in-band'>impl <a class="trait" href="../../chrono/trait.Timelike.html" title="trait chrono::Timelike">Timelike</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Timelike' class='anchor'></a><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1016-1182' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.hour' class="method"><code id='hour.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.hour' class='fnname'>hour</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1030-1032' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the hour number from 0 to 23.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.hour"><code>NaiveTime::hour</code></a> method.</p>
<h1 id="example-33" class="section-header"><a href="#example-33">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">hour</span>(), <span class="number">12</span>);</pre></div>
</div><h4 id='method.minute' class="method"><code id='minute.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.minute' class='fnname'>minute</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1047-1049' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the minute number from 0 to 59.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.minute"><code>NaiveTime::minute</code></a> method.</p>
<h1 id="example-34" class="section-header"><a href="#example-34">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">minute</span>(), <span class="number">34</span>);</pre></div>
</div><h4 id='method.second' class="method"><code id='second.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.second' class='fnname'>second</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1064-1066' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the second number from 0 to 59.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.second"><code>NaiveTime::second</code></a> method.</p>
<h1 id="example-35" class="section-header"><a href="#example-35">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">second</span>(), <span class="number">56</span>);</pre></div>
</div><h4 id='method.nanosecond' class="method"><code id='nanosecond.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.nanosecond' class='fnname'>nanosecond</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1084-1086' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of nanoseconds since the whole non-leap second.
The range from 1,000,000,000 to 1,999,999,999 represents
the <a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.nanosecond"><code>NaiveTime::nanosecond</code></a> method.</p>
<h1 id="example-36" class="section-header"><a href="#example-36">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">nanosecond</span>(), <span class="number">789_000_000</span>);</pre></div>
</div><h4 id='method.with_hour' class="method"><code id='with_hour.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_hour' class='fnname'>with_hour</a>(&amp;self, hour: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1106-1108' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the hour number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_hour"><code>NaiveTime::with_hour</code></a> method.</p>
<h1 id="example-37" class="section-header"><a href="#example-37">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_hour</span>(<span class="number">7</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">7</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_hour</span>(<span class="number">24</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.with_minute' class="method"><code id='with_minute.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_minute' class='fnname'>with_minute</a>(&amp;self, min: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1128-1130' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the minute number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_minute"><code>NaiveTime::with_minute</code></a> method.</p>
<h1 id="example-38" class="section-header"><a href="#example-38">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_minute</span>(<span class="number">45</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">45</span>, <span class="number">56</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_minute</span>(<span class="number">60</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.with_second' class="method"><code id='with_second.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_second' class='fnname'>with_second</a>(&amp;self, sec: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1152-1154' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the second number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.
As with the <a href="#method.second"><code>second</code></a> method,
the input range is restricted to 0 through 59.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_second"><code>NaiveTime::with_second</code></a> method.</p>
<h1 id="example-39" class="section-header"><a href="#example-39">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_second</span>(<span class="number">17</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">17</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_second</span>(<span class="number">60</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.with_nanosecond' class="method"><code id='with_nanosecond.v'>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_nanosecond' class='fnname'>with_nanosecond</a>(&amp;self, nano: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1179-1181' title='goto source code'>[src]</a></h4><div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with nanoseconds since the whole non-leap second changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.
As with the <a href="#method.nanosecond"><code>nanosecond</code></a> method,
the input range can exceed 1,000,000,000 for leap seconds.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_nanosecond"><code>NaiveTime::with_nanosecond</code></a>
method.</p>
<h1 id="example-40" class="section-header"><a href="#example-40">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">333_333_333</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">333_333_333</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">1_333_333_333</span>), <span class="comment">// leap second</span>
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">1_333_333_333</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">2_000_000_000</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.hour12' class="method hidden"><code id='hour12.v'>fn <a href='../../chrono/trait.Timelike.html#method.hour12' class='fnname'>hour12</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code><a class='srclink' href='../../src/chrono/lib.rs.html#998-1005' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns the hour number from 1 to 12 with a boolean flag, which is false for AM and true for PM. <a href="../../chrono/trait.Timelike.html#method.hour12">Read more</a></p>
</div><h4 id='method.num_seconds_from_midnight' class="method hidden"><code id='num_seconds_from_midnight.v'>fn <a href='../../chrono/trait.Timelike.html#method.num_seconds_from_midnight' class='fnname'>num_seconds_from_midnight</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/chrono/lib.rs.html#1044-1046' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns the number of non-leap seconds past the last midnight.</p>
</div></div></div><h2 id='synthetic-implementations' class='small-section-header'>Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a></h2><div id='synthetic-implementations-list'><h3 id='impl-RefUnwindSafe' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-RefUnwindSafe' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Send' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Unpin' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Unpin' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-UnwindSafe' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-UnwindSafe' class='anchor'></a></h3><div class='impl-items'></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-Any' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#108-112' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#109-111' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-217' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214-216' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-BorrowMut%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220-224' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221-223' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></div><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</code><a href='#impl-From%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#564-568' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#565-567' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-Into%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-560' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#557-559' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,&nbsp;</span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#80-92' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned' class="type"><code id='Owned.t'>type <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned' class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
</div><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&amp;self) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></div><h3 id='impl-ToString' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-ToString' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2160-2170' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.to_string' class="method hidden"><code id='to_string.v'>default fn <a href='https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string' class='fnname'>to_string</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2162-2169' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></p>
</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryFrom%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#601-610' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#607-609' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryInto%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#587-596' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#593-595' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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