-# @(#)europe 7.80
+# <pre>
+# @(#)europe 8.21
+# This file is in the public domain, so clarified as of
+# 2009-05-17 by Arthur David Olson.
# 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
# tz@elsie.nci.nih.gov for general use in the future).
-# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
+# From Paul Eggert (2006-03-22):
# A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks, The International Atlas (5th edition),
-# San Diego: ACS Publications, Inc. (1999).
+# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
+# San Diego: ACS Publications, Inc. (2003).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
-# Except where otherwise noted, Shanks is the source for entries through 1991,
-# and IATA SSIM is the source for entries afterwards.
+# Except where otherwise noted, Shanks & Pottenger is the source for
+# entries through 1991, and IATA SSIM is the source for entries afterwards.
#
# Other sources occasionally used include:
#
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
# which I found in the UCLA library.
#
+# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf">
+# William Willett, The Waste of Daylight, 19th edition
+# </a> (1914-03)
+#
# Brazil's Departamento Servico da Hora (DSH),
# <a href="http://pcdsh01.on.br/HISTHV.htm">
# History of Summer Time
# I invented the abbreviations marked `*' in the following table;
# the rest are from earlier versions of this file, or from other sources.
# Corrections are welcome!
-# std dst
-# LMT Local Mean Time
-# -4:00 AST Atlantic
-# -3:00 WGT WGST Western Greenland*
-# -1:00 EGT EGST Eastern Greenland*
-# 0:00 GMT BST Greenwich, British Summer
-# 0:00 GMT IST Greenwich, Irish Summer
-# 0:00 WET WEST Western Europe
-# 0:19:32 AMT NST Amsterdam, Netherlands Summer (1835-1937)*
-# 0:20 NET NEST Netherlands (1937-1940)*
-# 1:00 CET CEST Central Europe
-# 1:00:14 SET Swedish (1879-1899)*
-# 2:00 EET EEST Eastern Europe
-# 3:00 MSK MSD Moscow
+# std dst 2dst
+# LMT Local Mean Time
+# -4:00 AST ADT Atlantic
+# -3:00 WGT WGST Western Greenland*
+# -1:00 EGT EGST Eastern Greenland*
+# 0:00 GMT BST BDST Greenwich, British Summer
+# 0:00 GMT IST Greenwich, Irish Summer
+# 0:00 WET WEST WEMT Western Europe
+# 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)*
+# 0:20 NET NEST Netherlands (1937-1940)*
+# 1:00 CET CEST CEMT Central Europe
+# 1:00:14 SET Swedish (1879-1899)*
+# 2:00 EET EEST Eastern Europe
+# 3:00 MSK MSD Moscow
#
# A reliable and entertaining source about time zones, especially in Britain,
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
-# From Peter Ilieve <peter@memex.co.uk> (1994-12-04),
+# From Peter Ilieve (1994-12-04),
# The original six [EU members]: Belgium, France, (West) Germany, Italy,
# Luxembourg, the Netherlands.
# Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
# Britain (United Kingdom) and Ireland (Eire)
-# From Peter Ilieve <peter@memex.co.uk> (1994-07-06):
+# From Peter Ilieve (1994-07-06):
#
# On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about
# historical vistas along the Thames in west London. There was a photo
#
# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
+# From Paul Eggert (1993-11-18):
#
# Howse writes that Britain was the first country to use standard time.
# The railways cared most about the inconsistencies of local mean time,
# transition date for London, namely 1847-12-01. We don't know as much
# about Dublin, so we use 1880-08-02, the legal transition time.
-# From Paul Eggert (1999-01-30):
+# From Paul Eggert (2003-09-27):
# Summer Time was first seriously proposed by William Willett (1857-1915),
# a London builder and member of the Royal Astronomical Society
# who circulated a pamphlet ``The Waste of Daylight'' (1907)
# and retarding them by the same amount on four Sundays in September.
# A bill was drafted in 1909 and introduced in Parliament several times,
# but it met with ridicule and opposition, especially from farming interests.
-# One-hour Summer Time was eventually adopted as a wartime measure in 1916.
-# See:
-# <a href="http://www.the-times.co.uk/news/pages/tim/2000/05/18/x-timcrtcrt01011.html">
-# Summer Time Arrives Early, The Times (2000-05-18)
-# </a>
-# A monument was erected in 1927 to Willett, in an open space in a 45-acre wood
-# near Chiselhurst, Kent that was purchased by popular subscription and open
-# to the public.
+# Later editions of the pamphlet proposed one-hour summer time, and
+# it was eventually adopted as a wartime measure in 1916.
+# See: Summer Time Arrives Early, The Times (2000-05-18).
+# A monument to Willett was unveiled on 1927-05-21, in an open space in
+# a 45-acre wood near Chislehurst, Kent that was purchased by popular
+# subscription and open to the public. On the south face of the monolith,
+# designed by G. W. Miller, is the the William Willett Memorial Sundial,
+# which is permanently set to Summer Time.
+
+# From Winston Churchill (1934-04-28):
+# It is one of the paradoxes of history that we should owe the boon of
+# summer time, which gives every year to the people of this country
+# between 160 and 170 hours more daylight leisure, to a war which
+# plunged Europe into darkness for four years, and shook the
+# foundations of civilization throughout the world.
+# -- <a href="http://www.winstonchurchill.org/fh114willett.htm">
+# "A Silent Toast to William Willett", Pictorial Weekly
+# </a>
# From Paul Eggert (1996-09-03):
# The OED Supplement says that the English originally said ``Daylight Saving''
# known as "British" Summer Time in all parts of the United Kingdom.
# Date: 4 Jan 89 08:57:25 GMT (Wed)
-# From: Jonathan Leffler <nih-csl!uunet!mcvax!sphinx.co.uk!john>
+# From: Jonathan Leffler
# [British Summer Time] is fixed annually by Act of Parliament.
# If you can predict what Parliament will do, you should be in
# politics making a fortune, not computing.
-# From Chris Carrier <72157.3334@CompuServe.COM> (1996-06-14):
+# From Chris Carrier (1996-06-14):
# I remember reading in various wartime issues of the London Times the
# acronym BDST for British Double Summer Time. Look for the published
# time of sunrise and sunset in The Times, when BDST was in effect, and
# and follows the more usual convention of putting the location name first,
# so we use `BDST'.
-# Peter Ilieve <peter@aldie.co.uk> (1998-04-19) described at length
+# Peter Ilieve (1998-04-19) described at length
# the history of summer time legislation in the United Kingdom.
-# Since 1998 Joseph S. Myers <jsm28@cam.ac.uk> has been updating
+# Since 1998 Joseph S. Myers has been updating
# and extending this list, which can be found in
# <a href="http://student.cusu.cam.ac.uk/~jsm28/british-time/">
# History of legal time in Britain
-# </a> (2000-02-12).
+# </a>
-# From Joseph S. Myers <jsm28@cam.ac.uk> (1998-01-06):
+# From Joseph S. Myers (1998-01-06):
#
# The legal time in the UK outside of summer time is definitely GMT, not UTC;
# see Lord Tanlaw's speech
# (Lords Hansard 11 June 1997 columns 964 to 976)
# </a>.
-# From Paul Eggert (2001-07-18):
+# From Paul Eggert (2006-03-22):
#
-# For lack of other data, we'll follow Shanks for Eire in 1940-1948.
+# For lack of other data, follow Shanks & Pottenger for Eire in 1940-1948.
#
-# Given Ilieve and Myers's data, the following claims by Shanks are incorrect:
+# Given Ilieve and Myers's data, the following claims by Shanks & Pottenger
+# are incorrect:
# * Wales did not switch from GMT to daylight saving time until
# 1921 Apr 3, when they began to conform with the rest of Great Britain.
# Actually, Wales was identical after 1880.
# Actually, that date saw the usual switch to summer time.
# Standard time was not changed until 1968-10-27 (the clocks didn't change).
#
-# Here is another incorrect claim by Shanks:
+# Here is another incorrect claim by Shanks & Pottenger:
# * Jersey, Guernsey, and the Isle of Man did not switch from GMT
# to daylight saving time until 1921 Apr 3, when they began to
# conform with Great Britain.
# S.R.&O. 1916, No. 382 and HO 45/10811/312364 (quoted above) say otherwise.
#
-# The following claim by Shanks is possible though doubtful;
+# The following claim by Shanks & Pottenger is possible though doubtful;
# we'll ignore it for now.
# * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
#
#
-# Whitman says Dublin Mean Time was -0:25:21, which is more precise than Shanks.
+# Whitman says Dublin Mean Time was -0:25:21, which is more precise than
+# Shanks & Pottenger.
# Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
# (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
# to London. For example:
# "Timeball on the ballast office is down. Dunsink time."
# -- James Joyce, Ulysses
+# From Joseph S. Myers (2005-01-26):
+# Irish laws are available online at www.irishstatutebook.ie. These include
+# various relating to legal time, for example:
+#
+# ZZA13Y1923.html ZZA12Y1924.html ZZA8Y1925.html ZZSIV20PG1267.html
+#
+# ZZSI71Y1947.html ZZSI128Y1948.html ZZSI23Y1949.html ZZSI41Y1950.html
+# ZZSI27Y1951.html ZZSI73Y1952.html
+#
+# ZZSI11Y1961.html ZZSI232Y1961.html ZZSI182Y1962.html
+# ZZSI167Y1963.html ZZSI257Y1964.html ZZSI198Y1967.html
+# ZZA23Y1968.html ZZA17Y1971.html
+#
+# ZZSI67Y1981.html ZZSI212Y1982.html ZZSI45Y1986.html
+# ZZSI264Y1988.html ZZSI52Y1990.html ZZSI371Y1992.html
+# ZZSI395Y1994.html ZZSI484Y1997.html ZZSI506Y2001.html
+#
+# [These are all relative to the root, e.g., the first is
+# <http://www.irishstatutebook.ie/ZZA13Y1923.html>.]
+#
+# (These are those I found, but there could be more. In any case these
+# should allow various updates to the comments in the europe file to cover
+# the laws applicable in Ireland.)
+#
+# (Note that the time in the Republic of Ireland since 1968 has been defined
+# in terms of standard time being GMT+1 with a period of winter time when it
+# is GMT, rather than standard time being GMT with a period of summer time
+# being GMT+1.)
+
# From Paul Eggert (1999-03-28):
# Clive Feather (<news:859845706.26043.0@office.demon.net>, 1997-03-31)
# reports that Folkestone (Cheriton) Shuttle Terminal uses Concession Time
# See EU for rules starting in 1996.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/London -0:01:15 - LMT 1847 Dec 1
- 0:00 GB-Eire %s 1968 Oct 27
- 1:00 - BST 1971 Oct 31 2:00u
- 0:00 GB-Eire %s 1996
- 0:00 EU GMT/BST
-Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2
- -0:25:21 - DMT 1916 May 21 2:00 # Dublin/Dunsink MT
- -0:25:21 1:00 IST 1916 Oct 1 2:00s # Irish Summer Time
+Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s
0:00 GB-Eire %s 1968 Oct 27
1:00 - BST 1971 Oct 31 2:00u
0:00 GB-Eire %s 1996
0:00 EU GMT/BST
+Link Europe/London Europe/Jersey
+Link Europe/London Europe/Guernsey
+Link Europe/London Europe/Isle_of_Man
Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
-0:25:21 - DMT 1916 May 21 2:00
-0:25:21 1:00 IST 1916 Oct 1 2:00s
###############################################################################
-# Continental Europe
+# Europe
# EU rules are for the European Union, previously known as the EC, EEC,
# Common Market, etc.
Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
Rule EU 1996 max - Oct lastSun 1:00u 0 -
# The most recent directive covers the years starting in 2002. See:
-# <a href="http://europa.eu.int/eur-lex/en/lif/dat/2000/en_300L0084.html"
+# <a href="http://europa.eu.int/eur-lex/en/lif/dat/2000/en_300L0084.html">
# Directive 2000/84/EC of the European Parliament and of the Council
# of 19 January 2001 on summer-time arrangements.
# </a>
Rule C-Eur 1942 only - Nov 2 2:00s 0 -
Rule C-Eur 1943 only - Mar 29 2:00s 1:00 S
Rule C-Eur 1943 only - Oct 4 2:00s 0 -
-Rule C-Eur 1944 only - Apr 3 2:00s 1:00 S
-# Whitman gives 1944 Oct 7; go with Shanks.
+Rule C-Eur 1944 1945 - Apr Mon>=1 2:00s 1:00 S
+# Whitman gives 1944 Oct 7; go with Shanks & Pottenger.
Rule C-Eur 1944 only - Oct 2 2:00s 0 -
+# From Jesper Norgaard Welen (2008-07-13):
+#
+# I found what is probably a typo of 2:00 which should perhaps be 2:00s
+# in the C-Eur rule from tz database version 2008d (this part was
+# corrected in version 2008d). The circumstancial evidence is simply the
+# tz database itself, as seen below:
+#
+# Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
+# 0:00 France WE%sT 1945 Sep 16 3:00
+#
+# Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
+# 0:00 France WE%sT 1945 Sep 16 3:00
+#
+# Zone Europe/Belgrade 1:22:00 - LMT 1884
+# 1:00 1:00 CEST 1945 Sep 16 2:00s
+#
+# Rule France 1945 only - Sep 16 3:00 0 -
+# Rule Belgium 1945 only - Sep 16 2:00s 0 -
+# Rule Neth 1945 only - Sep 16 2:00s 0 -
+#
+# The rule line to be changed is:
+#
+# Rule C-Eur 1945 only - Sep 16 2:00 0 -
+#
+# It seems that Paris, Monaco, Rule France, Rule Belgium all agree on
+# 2:00 standard time, e.g. 3:00 local time. However there are no
+# countries that use C-Eur rules in September 1945, so the only items
+# affected are apparently these ficticious zones that translates acronyms
+# CET and MET:
+#
+# Zone CET 1:00 C-Eur CE%sT
+# Zone MET 1:00 C-Eur ME%sT
+#
+# It this is right then the corrected version would look like:
+#
+# Rule C-Eur 1945 only - Sep 16 2:00s 0 -
+#
+# A small step for mankind though 8-)
+Rule C-Eur 1945 only - Sep 16 2:00s 0 -
Rule C-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 S
Rule C-Eur 1977 only - Sep lastSun 2:00s 0 -
Rule C-Eur 1978 only - Oct 1 2:00s 0 -
# Previous editions of this database used abbreviations like MET DST
# for Central European Summer Time, but this didn't agree with common usage.
-# From Markus Kuhn <mskuhn@unrza3.dialin.rrze.uni-erlangen.de> (1996-07-12):
+# From Markus Kuhn (1996-07-12):
# The official German names ... are
#
# Mitteleuropaeische Zeit (MEZ) = UTC+01:00
1:00 EU CE%sT
# Austria
+
+# From Paul Eggert (2006-03-22): Shanks & Pottenger give 1918-06-16 and
+# 1945-11-18, but the Austrian Federal Office of Metrology and
+# Surveying (BEV) gives 1918-09-16 and for Vienna gives the "alleged"
+# date of 1945-04-12 with no time. For the 1980-04-06 transition
+# Shanks & Pottenger give 02:00, the BEV 00:00. Go with the BEV,
+# and guess 02:00 for 1945-04-12.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Austria 1920 only - Apr 5 2:00s 1:00 S
Rule Austria 1920 only - Sep 13 2:00s 0 -
-Rule Austria 1945 only - Apr 2 2:00s 1:00 S
-Rule Austria 1945 only - Nov 18 2:00s 0 -
Rule Austria 1946 only - Apr 14 2:00s 1:00 S
Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
Rule Austria 1947 only - Apr 6 2:00s 1:00 S
Rule Austria 1948 only - Apr 18 2:00s 1:00 S
+Rule Austria 1980 only - Apr 6 0:00 1:00 S
+Rule Austria 1980 only - Sep 28 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Vienna 1:05:20 - LMT 1893 Apr
- 1:00 C-Eur CE%sT 1918 Jun 16 3:00
- 1:00 Austria CE%sT 1940 Apr 1 2:00
- 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 C-Eur CE%sT 1920
+ 1:00 Austria CE%sT 1940 Apr 1 2:00s
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
+ 1:00 1:00 CEST 1945 Apr 12 2:00s
+ 1:00 - CET 1946
1:00 Austria CE%sT 1981
1:00 EU CE%sT
# pp 8-9.
# LMT before 1892 was 0:17:30, according to the official journal of Belgium:
# Moniteur Belge, Samedi 30 Avril 1892, N.121.
-# Thanks to Pascal Delmoitie <pascal@belnet.be> for these references.
+# Thanks to Pascal Delmoitie for these references.
# The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
# Assume Brussels switched to WET in 1918 when the armistice took effect.
#
1:00 EU CE%sT
# Bosnia and Herzegovina
-# see Yugoslavia
+# see Serbia
# Bulgaria
#
-# From Plamen Simenov <P.Simeonov@cnsys.bg> via Steffen Thorsen (1999-09-09):
+# From Plamen Simenov via Steffen Thorsen (1999-09-09):
# A document of Government of Bulgaria (No.94/1997) says:
# EET --> EETDST is in 03:00 Local time in last Sunday of March ...
# EETDST --> EET is in 04:00 Local time in last Sunday of October
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Bulg 1979 only - Mar 31 23:00 1:00 S
Rule Bulg 1979 only - Oct 1 1:00 0 -
-Rule Bulg 1980 1982 - Apr Sat<=7 23:00 1:00 S
+Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S
Rule Bulg 1980 only - Sep 29 1:00 0 -
Rule Bulg 1981 only - Sep 27 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Sofia 1:33:16 - LMT 1880
1:56:56 - IMT 1894 Nov 30 # Istanbul MT?
2:00 - EET 1942 Nov 2 3:00
- 1:00 C-Eur CE%sT 1945 Apr 2 3:00
+ 1:00 C-Eur CE%sT 1945
+ 1:00 - CET 1945 Apr 2 3:00
2:00 - EET 1979 Mar 31 23:00
2:00 Bulg EE%sT 1982 Sep 26 2:00
2:00 C-Eur EE%sT 1991
2:00 EU EE%sT
# Croatia
-# see Yugosloavia
+# see Serbia
+
+# Cyprus
+# Please see the `asia' file for Asia/Nicosia.
# Czech Republic
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1:00 Czech CE%sT 1979
1:00 EU CE%sT
-# Denmark, Faeroe Islands, and Greenland
+# Denmark, Faroe Islands, and Greenland
+
+# From Jesper Norgaard Welen (2005-04-26):
+# http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law
+# [introducing standard time] was in effect from 1894-01-01....
+# The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL
+# confirms this, and states that the law was put forth 1893-03-29.
+#
+# The EU treaty with effect from 1973:
+# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL
+#
+# This provoked a new law from 1974 to make possible summer time changes
+# in subsequenet decrees with the law
+# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19740022330-REGL
+#
+# It seems however that no decree was set forward until 1980. I have
+# not found any decree, but in another related law, the effecting DST
+# changes are stated explicitly to be from 1980-04-06 at 02:00 to
+# 1980-09-28 at 02:00. If this is true, this differs slightly from
+# the EU rule in that DST runs to 02:00, not 03:00. We don't know
+# when Denmark began using the EU rule correctly, but we have only
+# confirmation of the 1980-time, so I presume it was correct in 1981:
+# The law is about the management of the extra hour, concerning
+# working hours reported and effect on obligatory-rest rules (which
+# was suspended on that night):
+# http://www.retsinfo.dk/_GETDOCI_/ACCN/C19801120554-REGL
+
+# From Jesper Norgaard Welen (2005-06-11):
+# The Herning Folkeblad (1980-09-26) reported that the night between
+# Saturday and Sunday the clock is set back from three to two.
+
+# From Paul Eggert (2005-06-11):
+# Hence the "02:00" of the 1980 law refers to standard time, not
+# wall-clock time, and so the EU rules were in effect in 1980.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Denmark 1916 only - May 14 23:00 1:00 S
Rule Denmark 1916 only - Sep 30 23:00 0 -
Rule Denmark 1947 only - Aug 10 2:00s 0 -
Rule Denmark 1948 only - May 9 2:00s 1:00 S
Rule Denmark 1948 only - Aug 8 2:00s 0 -
-# Whitman also gives 1949 Apr 9 to 1949 Oct 1, and disagrees in minor ways
-# about many of the above dates; go with Shanks.
#
-# For 1894, Shanks says Jan, Whitman Apr; go with Whitman.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Copenhagen 0:50:20 - LMT 1890
- 0:50:20 - CMT 1894 Apr # Copenhagen Mean Time
+ 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT
1:00 Denmark CE%sT 1942 Nov 2 2:00s
1:00 C-Eur CE%sT 1945 Apr 2 2:00
1:00 Denmark CE%sT 1980
1:00 EU CE%sT
-Zone Atlantic/Faeroe -0:27:04 - LMT 1908 Jan 11 # Torshavn
+Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Torshavn
0:00 - WET 1981
0:00 EU WE%sT
#
-# From Paul Eggert (1996-11-22):
+# From Paul Eggert (2004-10-31):
+# During World War II, Germany maintained secret manned weather stations in
+# East Greenland and Franz Josef Land, but we don't know their time zones.
+# My source for this is Wilhelm Dege's book mentioned under Svalbard.
+#
+# From Paul Eggert (2006-03-22):
# Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
# and left the EU on 1985-02-01. It therefore should have been using EU
-# rules at least through 1984. Shanks says Scoresbysund and Godthab
+# rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthab
# used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
# rules since at least 1991. Assume EU rules since 1980.
# In the military area near Thule and in Danmarkshavn DST will not be
# introduced.
-# From Paul Eggert (2001-09-29):
-# The 1997 CIA map shows Danmarkshavn on GMT; the 1995 map as like Godthab.
+# From Rives McDow (2001-11-01):
+#
+# I correspond regularly with the Dansk Polarcenter, and wrote them at
+# the time to clarify the situation in Thule. Unfortunately, I have
+# not heard back from them regarding my recent letter. [But I have
+# info from earlier correspondence.]
+#
+# According to the center, a very small local time zone around Thule
+# Air Base keeps the time according to UTC-4, implementing daylight
+# savings using North America rules, changing the time at 02:00 local time....
+#
+# The east coast of Greenland north of the community of Scoresbysund
+# uses UTC in the same way as in Iceland, year round, with no dst.
+# There are just a few stations on this coast, including the
+# Danmarkshavn ICAO weather station mentioned in your September 29th
+# email. The other stations are two sledge patrol stations in
+# Mestersvig and Daneborg, the air force base at Station Nord, and the
+# DPC research station at Zackenberg.
+#
+# Scoresbysund and two small villages nearby keep time UTC-1 and use
+# the same daylight savings time period as in West Greenland (Godthab).
+#
+# The rest of Greenland, including Godthab (this area, although it
+# includes central Greenland, is known as west Greenland), keeps time
+# UTC-3, with daylight savings methods according to European rules.
+#
+# It is common procedure to use UTC 0 in the wilderness of East and
+# North Greenland, because it is mainly Icelandic aircraft operators
+# maintaining traffic in these areas. However, the official status of
+# this area is that it sticks with Godthab time. This area might be
+# considered a dual time zone in some respects because of this.
+
+# From Rives McDow (2001-11-19):
+# I heard back from someone stationed at Thule; the time change took place
+# there at 2:00 AM.
+
+# From Paul Eggert (2006-03-22):
+# From 1997 on the CIA map shows Danmarkshavn on GMT;
+# the 1995 map as like Godthab.
# For lack of better info, assume they were like Godthab before 1996.
-# The 2000 IATA shows Thule as observing DST, so assume they stopped in 2001.
-
+# startkart.no says Thule does not observe DST, but this is clearly an error,
+# so go with Shanks & Pottenger for Thule transitions until this year.
+# For 2007 on assume Thule will stay in sync with US DST rules.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Thule 1993 2000 - Apr Sun>=1 2:00 1:00 D
-Rule Thule 1993 2000 - Oct lastSun 2:00 0 S
+Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D
+Rule Thule 1991 1992 - Sep lastSun 2:00 0 S
+Rule Thule 1993 2006 - Apr Sun>=1 2:00 1:00 D
+Rule Thule 1993 2006 - Oct lastSun 2:00 0 S
+Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D
+Rule Thule 2007 max - Nov Sun>=1 2:00 0 S
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
-3:00 - WGT 1980 Apr 6 2:00
-3:00 EU WG%sT 1996
0:00 - GMT
-Zone America/Scoresbysund -1:29:00 - LMT 1916 Jul 28 # Ittoqqortoormiit
+Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit
-2:00 - CGT 1980 Apr 6 2:00
-2:00 C-Eur CG%sT 1981 Mar 29
-1:00 EU EG%sT
-4:00 Thule A%sT
# Estonia
-# From Peter Ilieve <peter@memex.co.uk> (1994-10-15):
+# From Peter Ilieve (1994-10-15):
# A relative in Tallinn confirms the accuracy of the data for 1989 onwards
# [through 1994] and gives the legal authority for it,
# a regulation of the Government of Estonia, No. 111 of 1989....
#
-# From Peter Ilieve <peter@aldie.co.uk> (1996-10-28):
+# From Peter Ilieve (1996-10-28):
# [IATA SSIM (1992/1996) claims that the Baltic republics switch at 01:00s,
# but a relative confirms that Estonia still switches at 02:00s, writing:]
# ``I do not [know] exactly but there are some little different
# human physiology. It seems that Estonia maybe will not change to
# summer time next spring.''
-# From Peter Ilieve <peter@aldie.co.uk> (1998-11-04), heavily edited:
+# From Peter Ilieve (1998-11-04), heavily edited:
# <a href="http://trip.rk.ee/cgi-bin/thw?${BASE}=akt&${OOHTML}=rtd&TA=1998&TO=1&AN=1390">
# The 1998-09-22 Estonian time law
# </a>
# no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all
# the year round. The regulation is effective 1999-11-01.
+# From Toomas Soome (2002-02-21):
+# The Estonian government has changed once again timezone politics.
+# Now we are using again EU rules.
+#
+# From Urmet Jaanes (2002-03-28):
+# The legislative reference is Government decree No. 84 on 2002-02-21.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Tallinn 1:39:00 - LMT 1880
1:39:00 - TMT 1918 Feb # Tallinn Mean Time
2:00 1:00 EEST 1989 Sep 24 2:00s
2:00 C-Eur EE%sT 1998 Sep 22
2:00 EU EE%sT 1999 Nov 1
- 2:00 - EET
+ 2:00 - EET 2002 Feb 21
+ 2:00 EU EE%sT
# Finland
#
-# From Hannu Strang <chs@apu.fi> (25 Sep 1994 06:03:37 UTC):
+# From Hannu Strang (1994-09-25 06:03:37 UTC):
# Well, here in Helsinki we're just changing from summer time to regular one,
# and it's supposed to change at 4am...
#
-# From Paul Eggert <eggert@twinsun.com> (25 Sep 1994):
-# Shanks says Finland has switched at 02:00 standard time since 1981.
-# Go with Strang instead.
+# From Paul Eggert (2006-03-22):
+# Shanks & Pottenger say Finland has switched at 02:00 standard time
+# since 1981. Go with Strang instead.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Finland 1942 only - Apr 3 0:00 1:00 S
2:00 Finland EE%sT 1981 Mar 29 2:00
2:00 EU EE%sT
+# Aaland Is
+Link Europe/Helsinki Europe/Mariehamn
+
+
# France
# From Ciro Discepolo (2000-12-20):
#
-# Shanks seems to use `24:00' ambiguously; we resolve it with Whitman.
+# Shank & Pottenger seem to use `24:00' ambiguously; resolve it with Whitman.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule France 1916 only - Jun 14 23:00s 1:00 S
Rule France 1916 1919 - Oct Sun>=1 23:00s 0 -
Rule France 1922 only - Mar 25 23:00s 1:00 S
# DSH writes that a law of 1923-05-24 specified 3rd Sat in Apr at 23:00 to 1st
# Sat in Oct at 24:00; and that in 1930, because of Easter, the transitions
-# were Apr 12 and Oct 5. Go with Shanks.
+# were Apr 12 and Oct 5. Go with Shanks & Pottenger.
Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
Rule France 1923 only - May 26 23:00s 1:00 S
Rule France 1924 only - Mar 29 23:00s 1:00 S
Rule France 1939 only - Apr 15 23:00s 1:00 S
Rule France 1939 only - Nov 18 23:00s 0 -
Rule France 1940 only - Feb 25 2:00 1:00 S
-# The French rules for 1941-1944 were not used in Paris, but Shanks writes
-# that they were used in Monaco and in many French locations.
+# The French rules for 1941-1944 were not used in Paris, but Shanks & Pottenger
+# write that they were used in Monaco and in many French locations.
# Le Corre writes that the upper limit of the free zone was Arneguy, Orthez,
# Mont-de-Marsan, Bazas, Langon, Lamotte-Montravel, Marouil, La
# Rochefoucault, Champagne-Mouton, La Roche-Posay, La Haye-Decartes,
# Paray-le-Monial, Montceau-les-Mines, Chalons-sur-Saone, Arbois,
# Dole, Morez, St-Claude, and Collognes (Haute-Savioe).
Rule France 1941 only - May 5 0:00 2:00 M # Midsummer
-# Shanks says this transition occurred at Oct 6 1:00,
-# but go with Denis.Excoffier@ens.fr (1997-12-12),
+# Shanks & Pottenger say this transition occurred at Oct 6 1:00,
+# but go with Denis Excoffier (1997-12-12),
# who quotes the Ephemerides Astronomiques for 1998 from Bureau des Longitudes
# as saying 5/10/41 22hUT.
Rule France 1941 only - Oct 6 0:00 1:00 S
Rule France 1944 only - Oct 8 1:00 1:00 S
Rule France 1945 only - Apr 2 2:00 2:00 M
Rule France 1945 only - Sep 16 3:00 0 -
-# Shanks gives Mar 28 2:00 and Sep 26 3:00;
+# Shanks & Pottenger give Mar 28 2:00 and Sep 26 3:00;
# go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT.
Rule France 1976 only - Mar 28 1:00 1:00 S
Rule France 1976 only - Sep 26 1:00 0 -
-# Shanks gives 0:09 for Paris Mean Time, and Whitman gives 0:09:05,
+# Shanks & Pottenger give 0:09:20 for Paris Mean Time, and Whitman 0:09:05,
# but Howse quotes the actual French legislation as saying 0:09:21.
# Go with Howse. Howse writes that the time in France was officially based
# on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT
-# Shanks gives 1940 Jun 14 0:00; go with Excoffier and Le Corre.
+# Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre.
0:00 France WE%sT 1940 Jun 14 23:00
# Le Corre says Paris stuck with occupied-France time after the liberation;
-# go with Shanks.
+# go with Shanks & Pottenger.
1:00 C-Eur CE%sT 1944 Aug 25
0:00 France WE%sT 1945 Sep 16 3:00
1:00 France CE%sT 1977
# Germany
-# From Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk> (1998-09-29):
+# From Markus Kuhn (1998-09-29):
# The German time zone web site by the Physikalisch-Technische
# Bundesanstalt contains DST information back to 1916.
-#
-# <a href="http://www.ptb.de/english/org/4/43/432/lega.htm">
-# Realisation of Legal Time in Germany
-# </a>
+# [See tz-link.htm for the URL.]
+
+# From Joerg Schilling (2002-10-23):
+# In 1945, Berlin was switched to Moscow Summer time (GMT+4) by
+# <a href="http://www.dhm.de/lemo/html/biografien/BersarinNikolai/">
+# General [Nikolai] Bersarin</a>.
+
+# From Paul Eggert (2003-03-08):
+# <a href="http://www.parlament-berlin.de/pds-fraktion.nsf/727459127c8b66ee8525662300459099/defc77cb784f180ac1256c2b0030274b/$FILE/bersarint.pdf">
+# http://www.parlament-berlin.de/pds-fraktion.nsf/727459127c8b66ee8525662300459099/defc77cb784f180ac1256c2b0030274b/$FILE/bersarint.pdf
+# </a>
+# says that Bersarin issued an order to use Moscow time on May 20.
+# However, Moscow did not observe daylight saving in 1945, so
+# this was equivalent to CEMT (GMT+3), not GMT+4.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Germany 1945 only - Apr 2 2:00s 1:00 S
-# Shanks says 05-24 2:00 to 09-24 3:00 for DDST; go with the PTB, who quotes
-# the Archiv fuer publizist. Arbeit (Munzinger-Archiv) 652 (Zeitsystem)
-# (1961-11-25), which gives dates only. Guess 3:00 transition times.
-Rule Germany 1945 only - May 31 3:00 2:00 M # Midsummer
-Rule Germany 1945 only - Sep 23 3:00 1:00 S
-Rule Germany 1945 only - Nov 18 2:00s 0 -
Rule Germany 1946 only - Apr 14 2:00s 1:00 S
Rule Germany 1946 only - Oct 7 2:00s 0 -
Rule Germany 1947 1949 - Oct Sun>=1 2:00s 0 -
-Rule Germany 1947 only - Apr 6 2:00s 1:00 S
-# The PTB gives 3:00 CET and 3:00 CEST for the midsummer transition times;
-# go with Shanks.
+# http://www.ptb.de/de/org/4/44/441/salt.htm says the following transition
+# occurred at 3:00 MEZ, not the 2:00 MEZ given in Shanks & Pottenger.
+# Go with the PTB.
+Rule Germany 1947 only - Apr 6 3:00s 1:00 S
Rule Germany 1947 only - May 11 2:00s 2:00 M
Rule Germany 1947 only - Jun 29 3:00 1:00 S
Rule Germany 1948 only - Apr 18 2:00s 1:00 S
Rule Germany 1949 only - Apr 10 2:00s 1:00 S
+
+Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer
+Rule SovietZone 1945 only - Sep 24 3:00 1:00 S
+Rule SovietZone 1945 only - Nov 18 2:00s 0 -
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
- 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 C-Eur CE%sT 1945 May 24 2:00
+ 1:00 SovietZone CE%sT 1946
1:00 Germany CE%sT 1980
1:00 EU CE%sT
+# Georgia
+# Please see the "asia" file for Asia/Tbilisi.
+# Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni)
+# is in Europe. Our reference location Tbilisi is in the Asian part.
+
# Gibraltar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2
+Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s
0:00 GB-Eire %s 1957 Apr 14 2:00
1:00 - CET 1982
1:00 EU CE%sT
# Greece
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Whitman gives 1932 Jul 5 - Nov 1; go with Shanks.
+# Whitman gives 1932 Jul 5 - Nov 1; go with Shanks & Pottenger.
Rule Greece 1932 only - Jul 7 0:00 1:00 S
Rule Greece 1932 only - Sep 1 0:00 0 -
-# Whitman gives 1941 Apr 25 - ?; go with Shanks.
+# Whitman gives 1941 Apr 25 - ?; go with Shanks & Pottenger.
Rule Greece 1941 only - Apr 7 0:00 1:00 S
-# Whitman gives 1942 Feb 2 - ?; go with Shanks.
+# Whitman gives 1942 Feb 2 - ?; go with Shanks & Pottenger.
Rule Greece 1942 only - Nov 2 3:00 0 -
Rule Greece 1943 only - Mar 30 0:00 1:00 S
Rule Greece 1943 only - Oct 4 0:00 0 -
-# Whitman gives 1944 Oct 3 - Oct 31; go with Shanks.
+# Whitman gives 1944 Oct 3 - Oct 31; go with Shanks & Pottenger.
Rule Greece 1952 only - Jul 1 0:00 1:00 S
Rule Greece 1952 only - Nov 2 0:00 0 -
Rule Greece 1975 only - Apr 12 0:00s 1:00 S
2:00 Greece EE%sT 1941 Apr 30
1:00 Greece CE%sT 1944 Apr 4
2:00 Greece EE%sT 1981
- # Shanks says they switched to C-Eur in 1981;
+ # Shanks & Pottenger say it switched to C-Eur in 1981;
# go with EU instead, since Greece joined it on Jan 1.
2:00 EU EE%sT
Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1:00 C-Eur CE%sT 1918
1:00 Hungary CE%sT 1941 Apr 6 2:00
- 1:00 C-Eur CE%sT 1945 May 1 23:00
+ 1:00 C-Eur CE%sT 1945
1:00 Hungary CE%sT 1980 Sep 28 2:00s
1:00 EU CE%sT
# Iceland
#
-# From Adam David <adam@veda.is> (1993-11-06):
+# From Adam David (1993-11-06):
# The name of the timezone in Iceland for system / mail / news purposes is GMT.
#
# (1993-12-05):
# might be a reference to the Julian calendar as opposed to Gregorian, or it
# might mean something else (???).
#
-# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
-# The Iceland Almanak, Shanks and Whitman disagree on many points.
-# We go with the Almanak, except for one claim from Shanks, namely that
-# Reykavik was 21W57 from 1837 to 1908, local mean time before that.
+# From Paul Eggert (2006-03-22):
+# The Iceland Almanak, Shanks & Pottenger, and Whitman disagree on many points.
+# We go with the Almanak, except for one claim from Shanks & Pottenger, namely
+# that Reykavik was 21W57 from 1837 to 1908, local mean time before that.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Iceland 1917 1918 - Feb 19 23:00 1:00 S
# But these events all occurred before the 1970 cutoff,
# so record only the time in Rome.
#
-# From Paul Eggert (1996-05-06):
-# For Italian DST we have three sources: Shanks, Whitman, and F. Pollastri
+# From Paul Eggert (2006-03-22):
+# For Italian DST we have three sources: Shanks & Pottenger, Whitman, and
+# F. Pollastri
# <a href="http://toi.iriti.cnr.it/uk/ienitlt.html">
-# Day-light Saving Time in Italy (1996-03-14)
+# Day-light Saving Time in Italy (2006-02-03)
# </a>
# (`FP' below), taken from an Italian National Electrotechnical Institute
# publication. When the three sources disagree, guess who's right, as follows:
#
-# year FP Shanks (S) Whitman (W) Go with:
+# year FP Shanks&P. (S) Whitman (W) Go with:
# 1916 06-03 06-03 24:00 06-03 00:00 FP & W
# 09-30 09-30 24:00 09-30 01:00 FP; guess 24:00s
# 1917 04-01 03-31 24:00 03-31 00:00 FP & S
Rule Italy 1979 only - Sep 30 0:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
- 0:49:56 - RMT 1893 Nov # Rome Mean Time
+ 0:49:56 - RMT 1893 Nov 1 0:00s # Rome Mean
1:00 Italy CE%sT 1942 Nov 2 2:00s
1:00 C-Eur CE%sT 1944 Jul
1:00 Italy CE%sT 1980
# Latvia
-# From Liene Kanepe <Liene_Kanepe@lm.gov.lv> (1998-09-17):
+# From Liene Kanepe (1998-09-17):
# I asked about this matter Scientific Secretary of the Institute of Astronomy
# of The University of Latvia Dr. paed Mr. Ilgonis Vilks. I also searched the
2:00 1:00 EEST 1989 Sep lastSun 2:00s
2:00 Latvia EE%sT 1997 Jan 21
2:00 EU EE%sT 2000 Feb 29
- 2:00 - EET 2001
+ 2:00 - EET 2001 Jan 2
2:00 EU EE%sT
# Liechtenstein
# IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is
# known to be wrong about Estonia and Latvia, assume it's wrong here too.
-# From Marius Gedminas <mgedmin@pub.osf.lt> (1998-08-07):
+# From Marius Gedminas (1998-08-07):
# I would like to inform that in this year Lithuanian time zone
# (Europe/Vilnius) was changed.
# Fact File, Lithuanian State Department of Tourism
# </a> (2000-03-27): Local time is GMT+2 hours ..., no daylight saving.
+# From a user via Klaus Marten (2003-02-07):
+# As a candidate for membership of the European Union, Lithuania will
+# observe Summer Time in 2003, changing its clocks at the times laid
+# down in EU Directive 2000/84 of 19.I.01 (i.e. at the same times as its
+# neighbour Latvia). The text of the Lithuanian government Order of
+# 7.XI.02 to this effect can be found at
+# http://www.lrvk.lt/nut/11/n1749.htm
+
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Vilnius 1:41:16 - LMT 1880
1:24:00 - WMT 1917 # Warsaw Mean Time
2:00 C-Eur EE%sT 1998
2:00 - EET 1998 Mar 29 1:00u
1:00 EU CE%sT 1999 Oct 31 1:00u
- 2:00 - EET
+ 2:00 - EET 2003 Jan 1
+ 2:00 EU EE%sT
# Luxembourg
-# Whitman disagrees with most of these dates in minor ways; go with Shanks.
+# Whitman disagrees with most of these dates in minor ways;
+# go with Shanks & Pottenger.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Lux 1916 only - May 14 23:00 1:00 S
Rule Lux 1916 only - Oct 1 1:00 0 -
1:00 EU CE%sT
# Macedonia
-# see Yugoslavia
+# see Serbia
# Malta
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
Rule Malta 1980 only - Mar 31 2:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta
+Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
1:00 Italy CE%sT 1942 Nov 2 2:00s
1:00 C-Eur CE%sT 1945 Apr 2 2:00s
1:00 Italy CE%sT 1973 Mar 31
# Moldova
-# From Paul Eggert (2001-02-11):
-# A previous version of this database followed Shanks, who writes that
-# Tiraspol switched to Moscow time on 1992-01-19 at 02:00.
+# From Paul Eggert (2006-03-22):
+# A previous version of this database followed Shanks & Pottenger, who write
+# that Tiraspol switched to Moscow time on 1992-01-19 at 02:00.
# However, this is most likely an error, as Moldova declared independence
# on 1991-08-27 (the 1992-01-19 date is that of a Russian decree).
# In early 1992 there was large-scale interethnic violence in the area
# and it's possible that some Russophones continued to observe Moscow time.
-# But moldavizolit@tirastel.md and mk@tirastel.md separately reported via
+# But [two people] separately reported via
# Jesper Norgaard that as of 2001-01-24 Tiraspol was like Chisinau.
# The Tiraspol entry has therefore been removed for now.
2:00 EU EE%sT
# Monaco
-# Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
+# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
+# more precise 0:09:21.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
1:00 France CE%sT 1977
1:00 EU CE%sT
+# Montenegro
+# see Serbia
+
# Netherlands
# Howse writes that the Netherlands' railways used GMT between 1892 and 1940,
1:00 EU CE%sT
# Norway
+# http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks &
+# Pottenger.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Whitman gives 1916 May 21 - 1916 Oct 21; go with Shanks.
Rule Norway 1916 only - May 22 1:00 1:00 S
Rule Norway 1916 only - Sep 30 0:00 0 -
-# Whitman says DST observed 1935-08-11/1942-11-01, then 1943-03-29/10-04,
-# 1944-04-03/10-02, and 1945-04-01/10-01; go with Shanks.
Rule Norway 1945 only - Apr 2 2:00s 1:00 S
Rule Norway 1945 only - Oct 1 2:00s 0 -
Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S
# From Paul Eggert (2001-05-01):
#
# Actually, Jan Mayen was never occupied by Germany during World War II,
-# so it must have diverged from Oslo time during the war, as Olso was
+# so it must have diverged from Oslo time during the war, as Oslo was
# keeping Berlin time.
#
# <http://home.no.net/janmayen/history.htm> says that the meteorologists
# <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
# expelled on 1942-05-14. However, small parties of Germans did return,
# and according to Wilhelm Dege's book "War North of 80" (1954)
-# <http://www.utpress.utoronto.ca/publishing/rights/dege_warnorthof80.htm>
+# <http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html>
# the German armed forces at the Svalbard weather station code-named
# Haudegen did not surrender to the Allies until September 1945.
#
# come up with more definitive info about the timekeeping during the
# war years it's probably best just do do the following for now:
Link Europe/Oslo Arctic/Longyearbyen
-Link Europe/Oslo Atlantic/Jan_Mayen
# Poland
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Poland 1918 1919 - Sep 16 2:00s 0 -
Rule Poland 1919 only - Apr 15 2:00s 1:00 S
-# Whitman gives 1944 Nov 30; go with Shanks.
+Rule Poland 1944 only - Apr 3 2:00s 1:00 S
+# Whitman gives 1944 Nov 30; go with Shanks & Pottenger.
Rule Poland 1944 only - Oct 4 2:00 0 -
-# For 1944-1948 Whitman gives the previous day; go with Shanks.
+# For 1944-1948 Whitman gives the previous day; go with Shanks & Pottenger.
Rule Poland 1945 only - Apr 29 0:00 1:00 S
Rule Poland 1945 only - Nov 1 0:00 0 -
-Rule Poland 1946 only - Apr 14 0:00 1:00 S
-Rule Poland 1946 only - Sep 7 0:00 0 -
-Rule Poland 1947 only - May 4 0:00 1:00 S
-Rule Poland 1947 1948 - Oct Sun>=1 0:00 0 -
-Rule Poland 1948 only - Apr 18 0:00 1:00 S
-# Whitman also gives 1949 Apr 9 - 1949 Oct 1; go with Shanks.
+# For 1946 on the source is Kazimierz Borkowski,
+# Torun Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U.,
+# <http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1>
+# Thanks to Przemyslaw Augustyniak (2005-05-28) for this reference.
+# He also gives these further references:
+# Mon Pol nr 13, poz 162 (1995) <http://www.abc.com.pl/serwis/mp/1995/0162.htm>
+# Druk nr 2180 (2003) <http://www.senat.gov.pl/k5/dok/sejm/053/2180.pdf>
+Rule Poland 1946 only - Apr 14 0:00s 1:00 S
+Rule Poland 1946 only - Oct 7 2:00s 0 -
+Rule Poland 1947 only - May 4 2:00s 1:00 S
+Rule Poland 1947 1949 - Oct Sun>=1 2:00s 0 -
+Rule Poland 1948 only - Apr 18 2:00s 1:00 S
+Rule Poland 1949 only - Apr 10 2:00s 1:00 S
Rule Poland 1957 only - Jun 2 1:00s 1:00 S
Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
Rule Poland 1958 only - Mar 30 1:00s 1:00 S
Rule Poland 1959 only - May 31 1:00s 1:00 S
Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
Rule Poland 1960 only - Apr 3 1:00s 1:00 S
-Rule Poland 1961 1964 - May Sun>=25 1:00s 1:00 S
+Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S
Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Warsaw 1:24:00 - LMT 1880
2:00 Poland EE%sT 1922 Jun
1:00 Poland CE%sT 1940 Jun 23 2:00
1:00 C-Eur CE%sT 1944 Oct
- 1:00 Poland CE%sT 1977 Apr 3 1:00
- 1:00 W-Eur CE%sT 1999
-# IATA SSIM (1991/1996) gives EU rules, but the _The Warsaw Voice_
-# <a href="http://www.warsawvoice.com.pl/v361/NewsInBrief.shtml">
-# http://www.warsawvoice.com/pl/v361/NewsInBrief.shtml (1995-09-24)
-# </a>
-# says the autumn 1995 switch was at 02:00.
-# Stick with W-Eur for now.
-#
-# From Marcin.Kasperski@softax.com.pl (1999-06-10):
-# According to my colleagues someone recently decided, that Poland would
-# follow European Union regulations, so - I think - the matter is not
-# worth further discussion.
-#
-# From Paul Eggert (1999-06-10):
-# Kasperski also writes that the government futzed with the rules in 1997
-# or 1998 but he doesn't remember the details. Assume they switched to
-# EU rules in 1999.
+ 1:00 Poland CE%sT 1977
+ 1:00 W-Eur CE%sT 1988
1:00 EU CE%sT
# Portugal
#
-# From Rui Pedro Salgueiro <rps@inescca.inescc.pt> (1992-11-12):
+# From Rui Pedro Salgueiro (1992-11-12):
# Portugal has recently (September, 27) changed timezone
# (from WET to MET or CET) to harmonize with EEC.
#
-# Martin Bruckmann <martin@ua.pt> (1996-02-29) reports via Peter Ilieve
+# Martin Bruckmann (1996-02-29) reports via Peter Ilieve
# that Portugal is reverting to 0:00 by not moving its clocks this spring.
# The new Prime Minister was fed up with getting up in the dark in the winter.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# DSH writes that despite Decree 1,469 (1915), the change to the clocks was not
# done every year, depending on what Spain did, because of railroad schedules.
-# Go with Shanks.
+# Go with Shanks & Pottenger.
Rule Port 1916 only - Jun 17 23:00 1:00 S
-# Whitman gives 1916 Oct 31; go with Shanks.
+# Whitman gives 1916 Oct 31; go with Shanks & Pottenger.
Rule Port 1916 only - Nov 1 1:00 0 -
Rule Port 1917 only - Feb 28 23:00s 1:00 S
Rule Port 1917 1921 - Oct 14 23:00s 0 -
Rule Port 1928 only - Apr 14 23:00s 1:00 S
Rule Port 1929 only - Apr 20 23:00s 1:00 S
Rule Port 1931 only - Apr 18 23:00s 1:00 S
-# Whitman gives 1931 Oct 8; go with Shanks.
+# Whitman gives 1931 Oct 8; go with Shanks & Pottenger.
Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
Rule Port 1932 only - Apr 2 23:00s 1:00 S
-# Shanks gives 1934 Apr 4; go with Whitman.
Rule Port 1934 only - Apr 7 23:00s 1:00 S
-# Whitman gives 1934 Oct 5; go with Shanks.
+# Whitman gives 1934 Oct 5; go with Shanks & Pottenger.
Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 -
-# Shanks gives 1935 Apr 30; go with Whitman.
+# Shanks & Pottenger give 1935 Apr 30; go with Whitman.
Rule Port 1935 only - Mar 30 23:00s 1:00 S
Rule Port 1936 only - Apr 18 23:00s 1:00 S
-# Whitman gives 1937 Apr 2; go with Shanks.
+# Whitman gives 1937 Apr 2; go with Shanks & Pottenger.
Rule Port 1937 only - Apr 3 23:00s 1:00 S
Rule Port 1938 only - Mar 26 23:00s 1:00 S
Rule Port 1939 only - Apr 15 23:00s 1:00 S
-# Whitman gives 1939 Oct 7; go with Shanks.
+# Whitman gives 1939 Oct 7; go with Shanks & Pottenger.
Rule Port 1939 only - Nov 18 23:00s 0 -
Rule Port 1940 only - Feb 24 23:00s 1:00 S
-# Shanks gives 1940 Oct 7; go with Whitman.
+# Shanks & Pottenger give 1940 Oct 7; go with Whitman.
Rule Port 1940 1941 - Oct 5 23:00s 0 -
Rule Port 1941 only - Apr 5 23:00s 1:00 S
Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S
Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S
Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 -
-# Shanks says DST was observed in 1950; go with Whitman.
-# Whitman gives Oct lastSun for 1952 on; go with Shanks.
+# Shanks & Pottenger say DST was observed in 1950; go with Whitman.
+# Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger.
Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S
Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 -
Rule Port 1977 only - Mar 27 0:00s 1:00 S
Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S
Rule Port 1983 only - Mar lastSun 2:00s 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Shanks & Pottenger say the transition from LMT to WET occurred 1911-05-24;
+# Willett says 1912-01-01. Go with Willett.
Zone Europe/Lisbon -0:36:32 - LMT 1884
- -0:36:32 - LMT 1911 May 24 # Lisbon Mean Time
+ -0:36:32 - LMT 1912 Jan 1 # Lisbon Mean Time
0:00 Port WE%sT 1966 Apr 3 2:00
1:00 - CET 1976 Sep 26 1:00
0:00 Port WE%sT 1983 Sep 25 1:00s
# Russia
-# From Paul Eggert <eggert@twinsun.com> (1999-11-12):
+# From Paul Eggert (2006-03-22):
# Except for Moscow after 1919-07-01, I invented the time zone abbreviations.
# Moscow time zone abbreviations after 1919-07-01, and Moscow rules after 1991,
-# are from Andrey A. Chernov. The rest is from Shanks, except we follow
-# Chernov's report that 1992 DST transitions were Sat 23:00, not Sun 02:00s.
+# are from Andrey A. Chernov. The rest is from Shanks & Pottenger,
+# except we follow Chernov's report that 1992 DST transitions were Sat
+# 23:00, not Sun 02:00s.
#
-# From Stanislaw A. Kuzikowski <S.A.Kuz@iae.nsk.su> (1994-06-29):
+# From Stanislaw A. Kuzikowski (1994-06-29):
# But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
# I do not know why they have decided to make this change;
# as far as I remember it was done exactly during winter->summer switching
# so we (Novosibirsk) simply did not switch.
#
-# From Andrey A. Chernov <ache@nagual.ru> (1996-10-04):
+# From Andrey A. Chernov (1996-10-04):
# `MSK' and `MSD' were born and used initially on Moscow computers with
-# Unix-like OSes by several developer groups (e.g. Demos group, Kiae group)....
+# UNIX-like OSes by several developer groups (e.g. Demos group, Kiae group)....
# The next step was the UUCP network, the Relcom predecessor
# (used mainly for mail), and MSK/MSD was actively used there.
#
-# From Chris Carrier <72157.3334@CompuServe.COM> (1996-10-30):
+# From Chris Carrier (1996-10-30):
# According to a friend of mine who rode the Trans-Siberian Railroad from
# Moscow to Irkutsk in 1995, public air and rail transport in Russia ...
# still follows Moscow time, no matter where in Russia it is located.
2:00 Russia EE%sT
#
# From Oscar van Vlijmen (2001-08-25): [This region consists of]
-# Respublika Adygeya, Arkhangel'skaya oblast', Astrakhanskaya oblast',
+# Respublika Adygeya, Arkhangel'skaya oblast',
# Belgorodskaya oblast', Bryanskaya oblast', Vladimirskaya oblast',
-# Volgogradskaya oblast', Vologodskaya oblast', Voronezhskaya oblast',
+# Vologodskaya oblast', Voronezhskaya oblast',
# Respublika Dagestan, Ivanovskaya oblast', Respublika Ingushetiya,
# Kabarbino-Balkarskaya Respublika, Respublika Kalmykiya,
# Kalyzhskaya oblast', Respublika Karachaevo-Cherkessiya,
-# Respublika Kareliya, Kirovskaya oblast', Respublika Komi,
+# Respublika Kareliya, Respublika Komi,
# Kostromskaya oblast', Krasnodarskij kraj, Kurskaya oblast',
# Leningradskaya oblast', Lipetskaya oblast', Respublika Marij El,
# Respublika Mordoviya, Moskva, Moskovskaya oblast',
# Murmanskaya oblast', Nenetskij avtonomnyj okrug,
# Nizhegorodskaya oblast', Novgorodskaya oblast', Orlovskaya oblast',
# Penzenskaya oblast', Pskovskaya oblast', Rostovskaya oblast',
-# Ryazanskaya oblast', Sankt-Peterburg, Saratovskaya oblast',
+# Ryazanskaya oblast', Sankt-Peterburg,
# Respublika Severnaya Osetiya, Smolenskaya oblast',
# Stavropol'skij kraj, Tambovskaya oblast', Respublika Tatarstan,
# Tverskaya oblast', Tyl'skaya oblast', Ul'yanovskaya oblast',
2:00 Russia EE%sT 1992 Jan 19 2:00s
3:00 Russia MSK/MSD
#
+# Astrakhanskaya oblast', Kirovskaya oblast', Saratovskaya oblast',
+# Volgogradskaya oblast'. Shanks & Pottenger say Kirov is still at +0400
+# but Wikipedia (2006-05-09) says +0300. Perhaps it switched after the
+# others? But we have no data.
+Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3
+ 3:00 - TSAT 1925 Apr 6 # Tsaritsyn Time
+ 3:00 - STAT 1930 Jun 21 # Stalingrad Time
+ 4:00 - STAT 1961 Nov 11
+ 4:00 Russia VOL%sT 1989 Mar 26 2:00s # Volgograd T
+ 3:00 Russia VOL%sT 1991 Mar 31 2:00s
+ 4:00 - VOLT 1992 Mar 29 2:00s
+ 3:00 Russia VOL%sT
+#
# From Oscar van Vlijmen (2001-08-25): [This region consists of]
# Samarskaya oblast', Udmyrtskaya respublika
Zone Europe/Samara 3:20:36 - LMT 1919 Jul 1 2:00
- 3:00 - KUYT 1930 Jun 21 # Kuybyshev
- 4:00 Russia KUY%sT 1989 Mar 26 2:00s
+ 3:00 - SAMT 1930 Jun 21
+ 4:00 - SAMT 1935 Jan 27
+ 4:00 Russia KUY%sT 1989 Mar 26 2:00s # Kuybyshev
3:00 Russia KUY%sT 1991 Mar 31 2:00s
2:00 Russia KUY%sT 1991 Sep 29 2:00s
3:00 - KUYT 1991 Oct 20 3:00
5:00 Russia OMS%sT 1992 Jan 19 2:00s
6:00 Russia OMS%sT
#
-# Novosibirskaya oblast'.
+# From Paul Eggert (2006-08-19): I'm guessing about Tomsk here; it's
+# not clear when it switched from +7 to +6.
+# Novosibirskaya oblast', Tomskaya oblast'.
Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00
6:00 - NOVT 1930 Jun 21 # Novosibirsk Time
7:00 Russia NOV%sT 1991 Mar 31 2:00s
6:00 Russia NOV%sT 1992 Jan 19 2:00s
- 7:00 Russia NOV%sT 1993 May 23 # says Shanks
+ 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P.
6:00 Russia NOV%sT
#
# From Oscar van Vlijmen (2001-08-25): [This region consists of]
# Kemerovskaya oblast', Krasnoyarskij kraj,
-# Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug, Tomskaya oblast',
+# Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug,
# Respublika Tuva, Respublika Khakasiya, Evenkijskij avtonomnyj okrug.
Zone Asia/Krasnoyarsk 6:11:20 - LMT 1920 Jan 6
6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time
7:00 Russia IRK%sT 1992 Jan 19 2:00s
8:00 Russia IRK%sT
#
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
# Aginskij Buryatskij avtonomnyj okrug, Amurskaya oblast',
# [parts of] Respublika Sakha (Yakutiya), Chitinskaya oblast'.
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Aldansky, Amginsky, Anabarsky, Bulunsky, Churapchinsky,
-# Eveno-Bytantaisky, Gorny, Khangalassky, Kobyaisky, Lensky,
-# Megino-Kangalassky, Mirninsky, Namsky, Nyurbinsky, Olenyoksky,
-# Olyokminsky, Srednekolymsky, Suntarsky, Tattinsky, Ust-Aldansky,
-# Verkhnekolymsky, Verkhnevilyuisky, Vilyuisky, Zhigansky.
+# The Sakha districts are: Aldanskij, Amginskij, Anabarskij,
+# Bulunskij, Verkhnekolymskij, Verkhnevilyujskij, Vilyujskij, Gornyj,
+# Zhiganskij, Kobyajskij, Lenskij, Megino-Kangalasskij, Mirninskij,
+# Namskij, Nyurbinskij, Olenekskij, Olekminskij, Srednekolymskij,
+# Suntarskij, Tattinskij, Ust'-Aldanskij, Khangalasskij,
+# Churapchinskij, Eveno-Bytantajskij.
Zone Asia/Yakutsk 8:38:40 - LMT 1919 Dec 15
8:00 - YAKT 1930 Jun 21 # Yakutsk Time
9:00 Russia YAK%sT 1991 Mar 31 2:00s
8:00 Russia YAK%sT 1992 Jan 19 2:00s
9:00 Russia YAK%sT
#
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
# Evrejskaya avtonomnaya oblast', Khabarovskij kraj, Primorskij kraj,
# [parts of] Respublika Sakha (Yakutiya).
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Tomponsky, Ust-Maisky, Ust-Yansky, Verkhoyansky.
+# The Sakha districts are: Verkhoyanskij, Tomponskij, Ust'-Majskij,
+# Ust'-Yanskij.
Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15
9:00 - VLAT 1930 Jun 21 # Vladivostok Time
10:00 Russia VLA%sT 1991 Mar 31 2:00s
11:00 Russia SAK%sT 1997 Mar lastSun 2:00s
10:00 Russia SAK%sT
#
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
# Magadanskaya oblast', Respublika Sakha (Yakutiya).
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Abyisky, Allaikhovsky, Momsky, Nizhnekolymsky, Oimyakonsky.
+# Probably also: Kuril Islands.
+# The Sakha districts are: Abyjskij, Allaikhovskij, Momskij,
+# Nizhnekolymskij, Ojmyakonskij.
Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
10:00 - MAGT 1930 Jun 21 # Magadan Time
11:00 Russia MAG%sT 1991 Mar 31 2:00s
11:00 Russia ANA%sT 1992 Jan 19 2:00s
12:00 Russia ANA%sT
+# Serbia
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Belgrade 1:22:00 - LMT 1884
+ 1:00 - CET 1941 Apr 18 23:00
+ 1:00 C-Eur CE%sT 1945
+ 1:00 - CET 1945 May 8 2:00s
+ 1:00 1:00 CEST 1945 Sep 16 2:00s
+# Metod Kozelj reports that the legal date of
+# transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
+# Shanks & Pottenger don't give as much detail, so go with Kozelj.
+ 1:00 - CET 1982 Nov 27
+ 1:00 EU CE%sT
+Link Europe/Belgrade Europe/Ljubljana # Slovenia
+Link Europe/Belgrade Europe/Podgorica # Montenegro
+Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
+Link Europe/Belgrade Europe/Skopje # Macedonia
+Link Europe/Belgrade Europe/Zagreb # Croatia
+
# Slovakia
Link Europe/Prague Europe/Bratislava
# Slovenia
-# see Yugoslavia
+# see Serbia
# Spain
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1; go with Shanks.
+# For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1;
+# go with Shanks & Pottenger.
Rule Spain 1917 only - May 5 23:00s 1:00 S
Rule Spain 1917 1919 - Oct 6 23:00s 0 -
Rule Spain 1918 only - Apr 15 23:00s 1:00 S
Rule Spain 1919 only - Apr 5 23:00s 1:00 S
-# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks.
+# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger.
Rule Spain 1924 only - Apr 16 23:00s 1:00 S
-# Whitman gives 1924 Oct 14; go with Shanks.
+# Whitman gives 1924 Oct 14; go with Shanks & Pottenger.
Rule Spain 1924 only - Oct 4 23:00s 0 -
Rule Spain 1926 only - Apr 17 23:00s 1:00 S
-# Whitman says no DST in 1929; go with Shanks.
+# Whitman says no DST in 1929; go with Shanks & Pottenger.
Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
Rule Spain 1927 only - Apr 9 23:00s 1:00 S
Rule Spain 1928 only - Apr 14 23:00s 1:00 S
Rule Spain 1929 only - Apr 20 23:00s 1:00 S
-# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13; go with Shanks.
+# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13;
+# go with Shanks & Pottenger.
Rule Spain 1937 only - May 22 23:00s 1:00 S
Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
Rule Spain 1938 only - Mar 22 23:00s 1:00 S
Rule Spain 1939 only - Apr 15 23:00s 1:00 S
Rule Spain 1940 only - Mar 16 23:00s 1:00 S
-# Whitman says no DST 1942-1945; go with Shanks.
+# Whitman says no DST 1942-1945; go with Shanks & Pottenger.
Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer
Rule Spain 1942 only - Sep 1 22:00s 1:00 S
Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M
Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Madrid -0:14:44 - LMT 1901
+Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s
0:00 Spain WE%sT 1946 Sep 30
1:00 Spain CE%sT 1979
1:00 EU CE%sT
# Sweden
-# From Ivan Nilsson (2001-04-13), superseding Shanks:
+# From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger:
#
# The law "Svensk forfattningssamling 1878, no 14" about standard time in 1879:
# From the beginning of 1879 (that is 01-01 00:00) the time for all
# mean time in preference to apparent time -- Geneva from 1780 ....
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# From Whitman (who writes ``Midnight?''):
-Rule Swiss 1940 only - Nov 2 0:00 1:00 S
-Rule Swiss 1940 only - Dec 31 0:00 0 -
-# From Shanks:
-Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
-Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
+# Rule Swiss 1940 only - Nov 2 0:00 1:00 S
+# Rule Swiss 1940 only - Dec 31 0:00 0 -
+# From Shanks & Pottenger:
+# Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
+# Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
+
+# From Alois Treindl (2008-12-17):
+# I have researched the DST usage in Switzerland during the 1940ies.
+#
+# As I wrote in an earlier message, I suspected the current tzdata values
+# to be wrong. This is now verified.
+#
+# I have found copies of the original ruling by the Swiss Federal
+# government, in 'Eidgen[o]ssische Gesetzessammlung 1941 and 1942' (Swiss
+# federal law collection)...
+#
+# DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am
+# DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am.
+#
+# DST began on Monday, 4 May 1942 at 01:00 am
+# DST ended on Monday, 5 Oct 1942 at 02:00 am
+#
+# There was no DST in 1940, I have checked the law collection carefully.
+# It is also indicated by the fact that the 1942 entry in the law
+# collection points back to 1941 as a reference, but no reference to any
+# other years are made.
+#
+# Newspaper articles I have read in the archives on 6 May 1941 reported
+# about the introduction of DST (Sommerzeit in German) during the previous
+# night as an absolute novelty, because this was the first time that such
+# a thing had happened in Switzerland.
+#
+# I have also checked 1916, because one book source (Gabriel, Traite de
+# l'heure dans le monde) claims that Switzerland had DST in 1916. This is
+# false, no official document could be found. Probably Gabriel got misled
+# by references to Germany, which introduced DST in 1916 for the first time.
+#
+# The tzdata rules for Switzerland must be changed to:
+# Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
+# Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
+#
+# The 1940 rules must be deleted.
+#
+# One further detail for Switzerland, which is probably out of scope for
+# most users of tzdata:
+# The zone file
+# Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
+# 0:29:44 - BMT 1894 Jun #Bern Mean Time
+# 1:00 Swiss CE%sT 1981
+# 1:00 EU CE%sT
+# describes all of Switzerland correctly, with the exception of
+# the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not
+# follow Bern Mean Time but kept its own local mean time.
+# To represent this, an extra zone would be needed.
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
+Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
0:29:44 - BMT 1894 Jun # Bern Mean Time
1:00 EU CE%sT
# Turkey
+
+# From Amar Devegowda (2007-01-03):
+# The time zone rules for Istanbul, Turkey have not been changed for years now.
+# ... The latest rules are available at -
+# http://www.timeanddate.com/worldclock/timezone.html?n=107
+# From Steffen Thorsen (2007-01-03):
+# I have been able to find press records back to 1996 which all say that
+# DST started 01:00 local time and end at 02:00 local time. I am not sure
+# what happened before that. One example for each year from 1996 to 2001:
+# http://newspot.byegm.gov.tr/arsiv/1996/21/N4.htm
+# http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING97/03/97X03X25.TXT
+# http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING98/03/98X03X02.HTM
+# http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING99/10/99X10X26.HTM#%2016
+# http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2000/03/00X03X06.HTM#%2021
+# http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2001/03/23x03x01.HTM#%2027
+# From Paul Eggert (2007-01-03):
+# Prefer the above source to Shanks & Pottenger for time stamps after 1990.
+
+# From Steffen Thorsen (2007-03-09):
+# Starting 2007 though, it seems that they are adopting EU's 1:00 UTC
+# start/end time, according to the following page (2007-03-07):
+# http://www.ntvmsnbc.com/news/402029.asp
+# The official document is located here - it is in Turkish...:
+# http://rega.basbakanlik.gov.tr/eskiler/2007/03/20070307-7.htm
+# I was able to locate the following seemingly official document
+# (on a non-government server though) describing dates between 2002 and 2006:
+# http://www.alomaliye.com/bkk_2002_3769.htm
+
+# From Sue Williams (2008-08-11):
+# I spotted this news article about a potential change in Turkey.
+#
+# <a href="http://www.hurriyet.com.tr/english/domestic/9626174.asp?scr=1">
+# http://www.hurriyet.com.tr/english/domestic/9626174.asp?scr=1
+# </a>
+
+# From Sue Williams (2008-08-20):
+# This article says that around the end of March 2011, Turkey wants to
+# adjust the clocks forward by 1/2 hour and stay that way permanently.
+# The article indicates that this is a change in timezone offset in addition
+# to stopping observance of DST.
+# This proposal has not yet been approved.
+#
+# Read more here...
+#
+# Turkey to abandon daylight saving time in 2011
+# <a href="http://www.turkishdailynews.com.tr/article.php?enewsid=112989">
+# http://www.turkishdailynews.com.tr/article.php?enewsid=112989
+# </a>
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Turkey 1916 only - May 1 0:00 1:00 S
Rule Turkey 1916 only - Oct 1 0:00 0 -
Rule Turkey 1921 only - Oct 3 0:00 0 -
Rule Turkey 1922 only - Mar 26 0:00 1:00 S
Rule Turkey 1922 only - Oct 8 0:00 0 -
-# Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925; go with Shanks.
+# Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925;
+# go with Shanks & Pottenger.
Rule Turkey 1924 only - May 13 0:00 1:00 S
Rule Turkey 1924 1925 - Oct 1 0:00 0 -
Rule Turkey 1925 only - May 1 0:00 1:00 S
Rule Turkey 1940 only - Dec 1 0:00 1:00 S
Rule Turkey 1941 only - Sep 21 0:00 0 -
Rule Turkey 1942 only - Apr 1 0:00 1:00 S
-# Whitman omits the next two transition and gives 1945 Oct 1; go with Shanks.
+# Whitman omits the next two transition and gives 1945 Oct 1;
+# go with Shanks & Pottenger.
Rule Turkey 1942 only - Nov 1 0:00 0 -
Rule Turkey 1945 only - Apr 2 0:00 1:00 S
Rule Turkey 1945 only - Oct 8 0:00 0 -
Rule Turkey 1983 only - Oct 2 0:00 0 -
Rule Turkey 1985 only - Apr 20 0:00 1:00 S
Rule Turkey 1985 only - Sep 28 0:00 0 -
+Rule Turkey 1986 1990 - Mar lastSun 2:00s 1:00 S
+Rule Turkey 1986 1990 - Sep lastSun 2:00s 0 -
+Rule Turkey 1991 2006 - Mar lastSun 1:00s 1:00 S
+Rule Turkey 1991 1995 - Sep lastSun 1:00s 0 -
+Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Istanbul 1:55:52 - LMT 1880
1:56:56 - IMT 1910 Oct # Istanbul Mean Time?
2:00 Turkey EE%sT 1978 Oct 15
3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time
- 2:00 Turkey EE%sT 1986
- 2:00 C-Eur EE%sT 1991
+ 2:00 Turkey EE%sT 2007
2:00 EU EE%sT
Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
# Ukraine
+#
+# From Igor Karpov, who works for the Ukranian Ministry of Justice,
+# via Garrett Wollman (2003-01-27):
+# BTW, I've found the official document on this matter. It's goverment
+# regulations number 509, May 13, 1996. In my poor translation it says:
+# "Time in Ukraine is set to second timezone (Kiev time). Each last Sunday
+# of March at 3am the time is changing to 4am and each last Sunday of
+# October the time at 4am is changing to 3am"
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Most of Ukraine since 1970 has been like Kiev.
+# "Kyiv" is the transliteration of the Ukrainian name, but
+# "Kiev" is more common in English.
Zone Europe/Kiev 2:02:04 - LMT 1880
2:02:04 - KMT 1924 May 2 # Kiev Mean Time
2:00 - EET 1930 Jun 21
2:00 E-Eur EE%sT 1995
2:00 EU EE%sT
# Ruthenia used CET 1990/1991.
+# "Uzhhorod" is the transliteration of the Ukrainian name, but
+# "Uzhgorod" is more common in English.
Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct
1:00 - CET 1940
1:00 C-Eur CE%sT 1944 Oct
2:00 E-Eur EE%sT 1995
2:00 EU EE%sT
# Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991.
-# Zaporozh'ye has an apostrophe, but Posix file names can't have apostrophes.
+# "Zaporizhia" is the transliteration of the Ukrainian name, but
+# "Zaporozh'ye" is more common in English. Use the common English
+# spelling, except omit the apostrophe as it is not allowed in
+# portable Posix file names.
Zone Europe/Zaporozhye 2:20:40 - LMT 1880
2:20 - CUT 1924 May 2 # Central Ukraine T
2:00 - EET 1930 Jun 21
3:00 Russia MSK/MSD 1990
3:00 - MSK 1990 Jul 1 2:00
2:00 - EET 1992
-# From Paul Eggert <eggert@twinsun.com> (1999-11-12):
+# From Paul Eggert (2006-03-22):
# The _Economist_ (1994-05-28, p 45) reports that central Crimea switched
# from Kiev to Moscow time sometime after the January 1994 elections.
-# Shanks says ``date of change uncertain'', but implies that it happened
-# sometime between the 1994 DST switches. For now, guess it changed in May.
+# Shanks (1999) says ``date of change uncertain'', but implies that it happened
+# sometime between the 1994 DST switches. Shanks & Pottenger simply say
+# 1994-09-25 03:00, but that can't be right. For now, guess it
+# changed in May.
2:00 E-Eur EE%sT 1994 May
# From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev.
3:00 E-Eur MSK/MSD 1996 Mar 31 3:00s
3:00 - MSK 1997 Mar lastSun 1:00u
2:00 EU EE%sT
-# Yugoslavia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Belgrade 1:22:00 - LMT 1884
- 1:00 - CET 1941 Apr 18 23:00
- 1:00 C-Eur CE%sT 1945 May 8 2:00s
- 1:00 1:00 CEST 1945 Sep 16 2:00s
-# Metod Kozelj <metod.kozelj@rzs-hm.si> reports that the legal date of
-# transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
-# Shanks doesn't give as much detail, so go with Kozelj.
- 1:00 - CET 1982 Nov 27
- 1:00 EU CE%sT
-Link Europe/Belgrade Europe/Ljubljana # Slovenia
-Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
-Link Europe/Belgrade Europe/Skopje # Macedonia
-Link Europe/Belgrade Europe/Zagreb # Croatia
-
###############################################################################
# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
# ...
# Date: Wed, 28 Jan 87 16:56:27 -0100
-# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
-# Message-Id: <8701281556.AA22174@cgcha.uucp>
+# From: Tom Hofmann
# ...
#
# ...the European time rules are...standardized since 1981, when
#
# 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)
+# From: Dik T. Winter
# ...
#
# The information from Tom Hofmann is (as far as I know) not entirely correct.
#
# ...
# dik t. winter, cwi, amsterdam, nederland
-# INTERNET : dik@cwi.nl
-# BITNET/EARN: dik@mcvax
+# ...
# From Bob Devine (1988-01-28):
# ...