# @(#)europe	3.1

# Europe, updated from 4.3BSD and various contributors
# International country codes are used to identify countries' rules and
# zones
#
# This data is by no means authoritative; if you think you know better, go
# ahead and edit the file (and please send any changes to seismo!elsie!tz
# for general use in the future).  The use of 1986 as starting years below
# is conservative.
#
# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
# the last Sunday in March to the last Sunday in September in 1986.
# The source shows Romania changing a day later than everybody else.
#
# According to Bernard Sieloff's source, Poland is in the MET time zone but
# uses the WE DST rules.  The Western USSR uses EET+1 and ME DST rules.
# Bernard Sieloff's source claims Romania switches on the same day, but at
# 00:00 standard time (i.e., 01:00 DST).  It also claims that Turkey
# switches on the same day, but switches on at 01:00 standard time
# and off at 00:00 standard time (i.e., 01:00 DST)

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	EU	1979	1995	-	Sep	lastSun	1:00s	0	-
Rule	EU   	1981	max	-	Mar	lastSun	1:00s	1:00	"S"
Rule	EU   	1996	max	-	Oct	lastSun	1:00s	0	-

Rule	C-Eur	1979	1995	-	Sep	lastSun	2:00s	0	-
Rule	C-Eur	1981	max	-	Mar	lastSun	2:00s	1:00	"S"
Rule	C-Eur	1996	max	-	Oct	lastSun	2:00s	0	-

Rule	Turkey	1986	max	-	Mar	lastSun	1:00	1:00	" DST"
Rule	Turkey	1986	max	-	Sep	lastSun	1:00	0	-

Rule	W-SU	1986	max	-	Mar	lastSun	2:00s	1:00	" DST"
Rule	W-SU	1986	max	-	Sep	lastSun	2:00s	0	-

# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
Zone	WET		0:00	EU   		WE%sT
Zone	CET		1:00	C-Eur		CE%sT
Zone	EET		2:00	EU		EE%sT
Zone	Turkey		3:00	Turkey		EE%sT
Zone	W-SU		3:00	C-Eur		????

#
# And now, letters on the subject. . .
#
###############################################################################
#
# ...
# Date: Wed, 28 Jan 87 16:56:27 -0100
# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
# Message-Id: <8701281556.AA22174@cgcha.uucp>
# ...
# Subject: Time zone handling
# ...
#
# ...the European time rules are...standardized since 1981, when
# most European counrties started DST.  Before that year, only
# a few countries (UK, France, Italy) had DST, each according
# to own national rules.  In 1981, however, DST started on
# 'Apr firstSun', and not on 'Mar lastSun' as in the following
# years...
# But also since 1981 there are some more national exceptions
# than listed in 'europe': Switzerland, for example, joined DST
# one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
# lastSun' in 1981---I don't know how they handle now.
#
# Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
# Soviet Union (as far as I know).
#
# Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
# 4002 Basle, Switzerland
# UUCP: ...!mcvax!cernvax!cgcha!wtho
#
###############################################################################
#
# ...
# Date: Wed, 4 Feb 87 22:35:22 +0100
# From: seismo!mcvax!cwi.nl!dik (Dik T. Winter)
# Message-Id: <8702042135.AA23919@zuring.cwi.nl>
# ...
# Subject: timezones
# ...
#
# The information from Tom Hofmann is (as far as I know) not entirely correct.
# After a request from chongo at amdahl I tried to retrieve all information
# about DST in Europe.  I was able to find all from about 1969.
#
# ...standardization
# on DST in Europe started in about 1977 with switches on first Sunday in
# April and last Sunday in September.  In UK it was from last but 1 Sunday
# in march to last Sunday in October.  In 1981 UK joined Europe insofar that
# the starting day for both shifted to last Sunday in March.  And from 1982
# the whole of Europe used DST, with switch dates April 1 and October 1 in
# the Sovjet Union.  In 1985 the SU reverted to standard Europen switch
# dates.  Note that currently in the UK the switch back date appears not
# to be the last Sunday in October, but 4 weeks after the last Sunday in
# September (withness 1982 and 1983 with terminating days October 24 and 23).
#
# It should also be remembered that time-zones are not constants; e.g.
# Portugal switched in 1976 from MET (or CET) to WET with DST, and the UK
# used MET throughout from 1967 to 1969, and WET with DST before and after
# that time.  Note also that though there were rules for switch dates not
# all countries abided to these dates, and many individual deviations
# occurred, though not since 1982 I believe.  Another note: it is always
# assumed that DST is 1 hour ahead of normal time, this need not be the
# case; at least in the Netherlands there have been times when DST was 2 hours
# in advance of normal time.
#
# ...
# dik t. winter, cwi, amsterdam, nederland
# INTERNET   : dik@cwi.nl
# BITNET/EARN: dik@mcvax
