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freebsd-dev/share/zoneinfo/europe
Garrett Wollman 7bf023e79d Merged the latest timezone data file release. 
Changed zones: Algeria, Egypt, Ghana, Libya, Morocco, Sierra Leone,
  South Africa, Sudan, Tunisia, Armenia, Myanmar, China, Taiwan, Hong
  Kong, Macao, Cyprus, Georgia, Iran, Israel, Jordan, Kazakhstan,
  Kirgizstan, Lebanon, Mongolia, the Phillippines, Syria, Tajikistan,
  Turkmenistan, Uzbekistan, Australia, Kiribati, New Caledonia, New
  Zealand, Vanuatu, the United Kingdom, Ireland, the Czech Republic,
  Finland, France, Greece, Hungary, Iceland, Italy, Luxembourg, the
  Netherlands, Norway, Portugal, Romania, Spain, Switzerland, Turkey,
  Canada, Mexico, the Bahamas, Barbados, Belize, Costa Rica, Cuba, the
  Dominican Republic, El Salvador, Guatemala, Haiti, Nicaragua,
  Brazil, the Falkland Islands, Paraguay

Deleted zones: Asia/Tomsk (superseded by Asia/Krasnoyarsk)

Added zones: Asia/Aktau (area formerly part of Asia/Alma-Ata);
  Asia/Krasnoyarsk (supersedes Asia/Tomsk); America/Glace_Bay (area
  formerly part of America/Halifax); America/Thunder_Bay,
  America/Nipigon, America/Rainy_River (areas formerly covered by
  America/Montreal); America/Swift_Current (area formerly part of
  America/Regina); America/Dawson_Creek (area formerly part of
  America/Vancouver); America/Pangnirtung, America/Iqaluit,
  America/Rankin_Inlet, America/Yellowknife, America/Inuvik,
  America/Dawson (areas formerly part of America/Whitehorse)
1996-07-17 20:07:52 +00:00

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# @(#)europe 7.38
# 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> (1995-12-19):
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (3rd edition),
# San Diego: ACS Publications, Inc. (1991).
# Except where otherwise noted, it is the source for the data below.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
# I found in the UCLA library.
#
# I invented the abbreviations marked `*' in the following table;
# the rest are from earlier versions of this file, or from other sources.
# The starred Russian names are dubious. Corrections are welcome!
# std dst
# LMT Local Mean Time
# LST Local Star Time (Russian ``mestnoe zvezdnoe vremya'')
# -4:00 AST Atlantic
# -3:00 WGT+DST Western Greenland*
# -2:00 MGT+DST Middle Greenland*
# -1:00 EGT+DST Eastern Greenland*
# -1:00 ACT+DST Azores and Canaries*
# -1:00 IST IDT Iceland (no longer used)*
# 0:00 GMT BST Greenwich, British Summer
# 0:00 WET+DST Western Europe
# 1:00 MET+DST Middle Europe
# 2:00 EET+DST Eastern Europe
# 3:00 MSK MSD Moscow
# 3:00 TUR+DST Turkey (no longer used)*
# 4:00 KSK KSD Kuybyshev (was 3:00)*
# 5:00 ESK ESD Yekaterinburg (was 4:00) (was SSK, SSD)*
# 6:00 OSK OSD Omsk (was 5:00)*
# 6:00 NSK NSD Novosibirsk (was 7:00)
# 7:00 KRSK KRSD Krasnoyarsk (was 6:00)
# 8:00 ISK ISD Irkutsk (was 7:00)*
# 9:00 YSK YSD Yakutsk (was 8:00)*
# 10:00 VSK VSD Vladivostok (was 9:00)*
# 11:00 MSK MSD Magadan (was 10:00)*
# 12:00 PSK PSD Petropavlovsk-Kamchatski (was 11:00)*
# 13:00 ASK ASD Anadyr (was 12:00)*
#
# See the `africa' file for Zone naming conventions.
#
# A reliable and entertaining source about time zones, especially in Britain,
# is Derek Howse, Greenwich time and the discovery of the longitude,
# Oxford University Press (1980).
# From Andrew A. Chernov <ache@astral.msk.su> (November 12, 1993):
# LST is Local Star Time (``mestnoe zvezdnoe vremya'').
# From Peter Ilieve <peter@memex.co.uk> (December 4, 1994),
# The original six [EU members]: Belgium, France, (West) Germany, Italy,
# Luxembourg, the Netherlands.
# Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
# Plus, from 1 Jan 81: Greece.
# Plus, from 1 Jan 86: Spain, Portugal.
# Plus, from 1 Jan 95: Austria, Finland, Sweden. (Norway negotiated terms for
# entry but in a referendum on 28 Nov 94 the people voted No by 52.2% to 47.8%
# on a turnout of 88.6%. This was almost the same result as Norway's previous
# referendum in 1972, they are the only country to have said No twice.
# Referendums in the other three countries voted Yes.)
# ...
# Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT.
# I don't think they know yet what they will do from 1996 onwards.
# ...
# There shouldn't be any [current members who are not using EU rules].
# A Directive has the force of law, member states are obliged to enact
# national law to implement it. The only contentious issue was the
# different end date for the UK and Ireland, and this was always allowed
# in the Directive.
###############################################################################
# United Kingdom
# From Peter Ilieve <peter@memex.co.uk> (July 6, 1994):
#
# 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
# and a sketch map showing some of the sightlines involved. One paragraph
# of the text said:
#
# `An old stone obelisk marking a forgotten terrestrial meridian stands
# beside the river at Kew. In the 18th century, before time and longditude
# was standardised by the Royal Observatory in Greenwich, scholars observed
# this stone and the movement of stars from Kew Observatory nearby. They
# made their calculations and set the time for the Horse Guards and Parliament,
# but now the stone is obscured by scrubwood and can only be seen by walking
# along the towpath within a few yards of it.'
#
# I have a one inch to one mile map of London and my estimate of the stone's
# position is 51 deg. 28' 30" N, 0 deg. 18' 45" W. The longditude should
# be within about +-2". The Ordnance Survey grid reference is TQ172761.
#
# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
#
# Howse writes that Britain was the first country to use standard time.
# The railways cared most about the inconsistencies of local mean time,
# and it was they who forced a uniform time on the country.
# The original idea was credited to Dr. William Hyde Wollaston (1766-1828);
# it was popularized in 1840 by Capt. Basil Hall, RN (1788-1844),
# famed explorer and former Commissioner for Longitude.
# The first railway to adopt London time was the Great Western Railway
# in November 1840; other railways followed suit, and by 1847 most
# (though not all) railways used London time. On 1847 Sep 22 the
# Railway Clearing House, an industry standards body, recommended that GMT be
# adopted at all stations; the January 1848 Bradshaw's lists most major
# railways as using GMT. By 1855 the vast majority of public
# clocks in Britain were set to GMT (though some, like the Great Clock
# in Tom Tower at Christ Church, Oxford, were fitted with two minute hands,
# one for local time and one for GMT). The last major holdout was the legal
# system, which stubbornly stuck to local time for many years, leading
# to oddities like polls opening at 08:13 and closing at 16:13.
# The legal system finally switched to GMT when the Statutes (Definition
# of Time) Act took effect; it received the Royal Assent on 1880 Aug 2.
#
# In the tables below, we condense this complicated story into a single
# transition date for London, namely 1847 Sep 22. We don't know as much
# about Dublin, so we use 1880 Aug 2, the legal transition time.
# From Paul Eggert (1996-06-12):
# Summer Time was first seriously proposed by William Willett (1857-1915),
# a London builder who circulated a pamphlet ``Waste of Daylight'' (1907)
# that proposed advancing clocks 20 minutes on each of four Sundays in April,
# 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.
# From Arthur David Olson (January 19, 1989):
#
# A source at the British Information Office in New York avers that it's
# 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>
# [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 Peter Ilieve <peter@memex.co.uk> (September 3, 1993):
#
# Our Government...couldn't...make a decision after the 1989 consultation
# exercise about the UK changing its timezone so it just let things drift
# (different from deciding to keep the status quo). According to the
# Summer Time Order 1992 (SI 1992/1729) the dates of Summer Time for 1993
# and 1994 are:
# Start End
# 1993 28 March 24 October
# 1994 27 March 23 October
# All start and end times are at 01:00 GMT.
#
# There [was] an error in your tables for the start and end times prior to 1981.
# The UK always used to change at 02:00 GMT. In 1981 it changed to 01:00 GMT
# as a part of EC harmonisation and has remained at that time since.
#
# I have found the default algorithm for UK Summer Time, it is in the
# Summer Time Act 1972. Section 1 states that in the absence of an Order
# in Council Summer Time starts at 02:00 GMT on the morning of the day
# after the third Saturday in March, unless that day is Easter Day, in
# which case it is the morning of the day after the second Saturday.
# It ends at 02:00 GMT on the morning of the day after the fourth Saturday
# in October. (All the redundant `morning of the day ...' is in the Act.)
# This is only of passing interest now as it will always be overridden by
# an Order in Council (a Statutary Instrument, the SI thing mentioned above)
# to specify the EC specified dates.
# From Peter Ilieve <peter@memex.co.uk> (October 18, 1993):
#
# My contact in the Ministry of Defence Public Relations department
# accepted the challenge of looking into this and produced the following,
# from Hansard (the official record of the UK Parliament), Oral Answers,
# 1 March 1945, cols 1559--60:
#
# `58. Major Sir Goronwy Owen asked the Secretary of State for the Home
# Department if he is now able to state the Government's proposals
# regarding double summer time.
#
# [two other similar questions omitted]
#
# Mr. H. Morrison: The Government, in reviewing the matter, have
# considered, [...] the conclusion has been reached that the adoption of
# double summer time from the beginning of April is essential to the
# maintenance of the war effort. [...] As 1st April is Easter Sunday,
# when very early services are held in many churches, it is proposed that
# double summer time shall start not in the night preceding Easter
# Sunday, but in the night of Sunday- Monday so that it will operate from
# Monday, 2nd April.'
# From Peter Ilieve <peter@memex.co.uk> (September 3, 1993):
#
# > # Current rules
# > Rule GB-Eire 1981 max - Mar lastSun 1:00s 1:00 BST
# > Rule GB-Eire 1981 max - Oct Sun>=23 1:00s 0 GMT
#
# The ending rule here doesn't match the EC rules, which specify the fourth
# Sunday in October for the UK and Eire. The `fourth Sunday' rule wasn't
# followed in 1989, but then the sixth EC directive wasn't in force then
# and I don't know what previous ones said. 1995 is the next year with
# the 4th Sun on 22 Oct, but that year isn't covered by the UK Summer Time
# Order or the sixth EC directive. Your Oct Sun>=23 rule matches history
# and with things only announced for 2 years or so in advance who knows
# what will happen.
#
# There are renewed rumours that the Government here will make another
# attempt at resolving this issue, which is what prompted me to start
# asking the Home Office and the EC about it again. The EC categorically
# state they are not asking anybody to change timezone, they only want
# common start/end dates. The UK Govt. seem to want to change our zone
# and blame the resulting fuss on the EC. Me, I think we should scrap
# summer time completely, noon is when the Sun is overhead, and that should
# be the end of it.
# From Peter Ilieve <peter@memex.co.uk> (October 22, 1993):
#
# I now have the text of the Summer Time Act 1916, the granddaddy of them all.
# It is headed: `An Act to provide for the Time in Great Britain and Ireland
# being in advance of Greenwich and Dublin mean time respectively in the
# summer months'.
#
# It specifies 21 May and 1 October for 1916 (both at 02:00 GMT) and whatever
# dates an Order in Council may specify for subsequent years.
#
# Section 4 states: `This act shall apply to Ireland in like manner as it
# applies to Great Britain, with the substitution however of references
# to Dublin mean time for references to Greenwich mean time.'
#
# Lorna, my learned legal friend who supplied it, also offers this quote
# from Halsbury's Statutes on the extent of Acts:
#
# `An Act of the United Kingdom Parliament is to be construed prima facie
# to apply to the whole of the United Kingdom and not to any place outside.
# [...] The expression "United Kingdom" for this purpose includes (since
# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
# but it does not include the Channel Islands or the Isle of Man.'
#
# She goes on to say the seminal event of 1922 was the establishment of
# the Irish Free State, now called Eire.
#
# The Act doesn't say anything about Wales (or Scotland) so I would assert
# that Shanks is wrong here. I would like to know why he thinks Wales
# was different.
#
# It also confirms the fact that Ireland followed Dublin time back then,
# and 25 minutes behind Greenwich, as Shanks has it, would be correct.
# From Peter Ilieve <peter@memex.co.uk> (October 28, 1993):
#
# I now have before me, thanks to my learned legal friend Lorna, the text of
# the Time (Ireland) Act 1916.
#
# It says that as from 2 AM Dublin Mean Time on 1 October 1916 the time
# for general purposes in Ireland shall be the same as the rest of Great
# Britain (ie. GMT with the Summer Time periods specified by the Summer Time
# Act 1916).... As Ireland was behind GMT/BST at 02:00 DMT on 1 Oct GB would
# have already put the clocks back. Using DST as Dublin Summer Time the
# sequence would have been:
# Dublin London
# 02:34 DST 02:59 BST
# 02:35 DST 02:00 GMT
# 02:59 DST 02:24 GMT
# 02:25 GMT 02:25 GMT
# with the transition 03:00 DST -> 02:00 DMT -> 02:25 GMT all at once.
#
# In a table of repeals in the Schedule to the Act it mentions the
# Statutes (Definition of Time) Act 1880. This is presumably the source
# of the 1880 date in Shanks. The little bit of it that is repealed
# also refers solely to Ireland and Dublin Mean Time.
# From Peter Ilieve <peter@memex.co.uk> (October 29, 1993):
#
# My case is that, with the sole exception of Ireland in 1916 using Dublin
# Mean Time, Summer Time has been uniform throughout the United Kingdom
# ever since it first started in 1916.
#
# The United Kingdom is England, Wales and Scotland plus all of Ireland from
# 1916 up to and including 1921, or plus Northern Ireland from 1922 to date.
#
# The dates used are those specified in the table in Summer Time: A Consultation
# Document (Cm 722, 1989) that are now included in the europe file, with a
# change to a single date, the start in 1924. I made a typo in my 1989 mail
# and the table itself is also wrong. The correct date is 13 April.
# The times were 02:00 GMT up to and including 1980, 01:00 GMT from 1981 on,
# except for wartime double summer time.
#
# As evidence I would cite:
#
# - The Summer Time Act, 1916.
#
# This specifically states that it applies to Ireland, specifies dates of
# 21 May and 1 October and times of 02:00, and says that in Ireland the
# times relate to Dublin mean time. It specifies an offset of 1 hour.
#
# - The Time (Ireland) Act, 1916
#
# This abolishes Dublin mean time on 02:00 DMT 1 October 1916.
# It repeals that section of the Statutes (Definition of Time) Act, 1880
# that specifies DMT. It is therefore a safe bet that DMT existed at least
# from 1880 and was the only alternative standard time in the UK.
#
# - The Summer Time Act, 1922
#
# This specifies an offset of 1 hour and dates of the day after the third
# Saturday in April, unless that be Easter, in which case it is the day after
# the second Saturday, and the day after the third Saturday in September.
# The time is 02:00 GMT. It applied in 1922 and 1923, and longer if Parliament
# so approved.
#
# It specifically states that it applies to Northern Ireland, the Channel
# Islands, and the Isle of Man.
#
# - The Summer Time Act, 1925
#
# This makes the 1922 Act permanent, with a change to the end date to the
# day after the first Saturday in October. It says nothing about extent,
# so that part of the 1922 Act will still apply.
#
# - The Defence (Summer Time) Regulations, 1939, SR&O 1939 No. 1379
# [SR&O == Statutary Regulation and Order]
#
# These were made under the Emergency Powers (Defence) Act, 1939.
# It changes the end date to be the day after the third Saturday in November.
# It makes consequential changes to some vehicle lighting legislation,
# which includes the Motor Vehicles and Road Traffic (Northern Ireland) Act,
# 1934, so it seems clear it applies in Northern Ireland.
#
# - An Order in Council amending the The Defence (Summer Time) Regulations,
# 1939, SR&O 1940 No. 1883
#
# This continues summer time throughout the year after it starts in 1940.
# It says nothing about extent and has no consequential changes.
#
# - An Order in Council amending the The Defence (Summer Time) Regulations,
# 1939, SR&O 1941 No. 476
#
# This introduces double summer time, starting at 01:00 GMT on the day after
# the first Saturday in May and ending at 01:00 GMT on the day after the
# second Saturday in August, offset another hour from normal summer time,
# which continues throughout the rest of the year. It goes on a lot about
# consequential changes to agricultural wages legislation, and says in part
# `... and in its application to Northern Ireland have effect as
# if for the references to the Agricultural Wages (Regulation) Acts, 1924 and
# 1940, there were substituted references to the Agricultural Wages (Regulation)
# Acts (Northern Ireland), 1939 and 1940, ...'. It also has a similar section
# for Scotland. Both sections substitute the local Agricultural Wages Board
# for the Agricultural Wages Board for England and Wales, showing that
# England and Wales were indivisible.
#
# - An Order in Council amending the The Defence (Summer Time) Regulations,
# 1939, SR&O 1942 No. 506
#
# This changes the start date of double summer time to the day after the first
# Saturday in April. It says nothing about extent.
#
# - An Order in Council amending the The Defence (Summer Time) Regulations,
# 1939, SR&O 1944 No. 932
#
# This changed the end date of double summer time to 17 September 1944.
# (I don't have the text of this, just a note of what it did, the text almost
# certainly had the `day after the nth Saturday' form.)
#
# (I am missing whatever regulations there were to change things in 1945
# and the Summer Time Act, 1947.)
#
# - The British Standard Time Act, 1968
#
# This came into force on 27 October 1968 and continued summer time throughout
# the year as an experiment until it expired on 31 October 1971.
# There was no double summer time so we didn't have to change the clocks at all.
# It specifically said it applied to Northern Ireland. It also said it
# applied to Jersey, Guernsey and the Isle of Man unless they passed
# measures saying it didn't.
#
# - The Manx Time Act, 1968
#
# This is an Act of Tynwald (the Isle of Man Parliament) that said that
# henceforth Manx time would be the same as the time in Great Britain.
#
# - The Summer Time Act, 1972
#
# This specified a reversion to normal summer time behaviour with a start
# date of the day after the third Saturday in March, unless that is Easter,
# when it is the day after the second Saturday, and an end date of the day
# after the fourth Saturday in October. Times are at 02:00 GMT, offset is
# 1 hour.
#
# It has the same wording about extent as the British Standard Time Act, 1968,
# applying to Northern Ireland unconditionally and to Jersey, Guernsey and the
# Isle of Man if they don't do something about it.
#
# (I am missing various Summer Time Orders that modified the 1972 Act to
# harmonise with the EC since 1981. The major change is that the time changes
# to 01:00 GMT.)
#
# - The Summer Time Order, 1992, SI 1992/1729 [SI == Statutary Instrument]
#
# This specifies dates of:
# Start End
# 1993 28 March 24 October
# 1994 27 March 23 October
# All start and end times are at 01:00 GMT....
#
# - Some text on the extent of Acts, from Halsbury's Statutes
#
# `An Act of the United Kingdom Parliament is to be construed prima facie
# to apply to the whole of the United Kingdom and not to any place outside.
# [...] The expression "United Kingdom" for this purpose includes (since
# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
# but it does not include the Channel Islands or the Isle of Man.'
#
# So, many of these measures specifically include Northern Ireland,
# the Channel Islands and the Isle of Man. None of them exclude any
# part of the UK. The default interpretation of Acts is that they apply
# throughout the UK.
#
# With that, I rest my case Milud :-)
#
# Thanks are due to my learned legal friend Lorna Montgomerie, who dug out
# the dusty old statutes, and to Melanie Allison of the Ministry of Defence,
# who provided the wartime regulations and a snippet of Hansard explaining
# why double summer time started on a Monday in 1945 (it was Easter).
# From Peter Ilieve <peter@aldie.co.uk> (1996-05-29):
# I have now got a copy of the British Standard Time Act 1968.
# It says (S4(2)) that it expires at 02:00 GMT on 31 October 1971 unless
# an Order in Council was passed in Parliament to make the Act permanent.
# No Order was passed, so 02:00 1971-10-31 it is...
#
# Interestingly, it says baldly `This Act shall come into force on
# 27 October 1968', without giving a time. As S1 of the Act merely
# stated that `The time for general purposes in the United Kingdom
# (to be known as British standard time) shall be one hour in
# advance of Greenwich mean time throughout the year; ...' you could
# possibly argue that the start time of BStandardT was 00:00 1968-10-27,
# especially as the Act repealed the Summer Time Acts 1916--1947 in toto,
# thereby destroying the authority of the Summer Time Order specifying
# summer time in 1968....
# From Peter Ilieve <peter@memex.co.uk> (November 18, 1993)
#
# Here is a revised version of my tabrules file for the perl script I sent
# before. I have personally verified the various Orders back to 1953 and
# all the Acts.
#
# There are no changes to the dates we already have.
#
# My doubt about an early start in 1967 on 18 Feb was misplaced, the Order
# does say 18 Feb. This is an interesting case as the first Order gave a
# different date of 7 April 1967 for the Isle of Man but this was changed
# before it came into effect by another Order for the Isle of Man alone.
#
# I don't think I will be able to find any more of the earlier Orders.
# The annual volumes for 1949--52 do not contain the various Summer Time
# Orders. They therefore don't appear in the index. They rate a mention in
# italics in the numerical list at the start but that is all.
# I think what happens is that the annual volume is produced well after the
# end of the year in question, by which time the Summer Time Order is spent.
# They assume that nobody would ever be stupid enough to want to see it
# again so they leave it out.
#
# It might be a good idea to put this table, or the output of tabscript
# showing all the moves because of Easter, in the europe file comments in
# place of my old transcription of the Green Paper table [the UK Government
# paper "Summer Time: A Consultation Document" (HMSO Cm722 June 1989)].
#
# Peter Ilieve peter@memex.co.uk
#
#
# ## control file for tabscript, a program to generate UK summer time dates
# ## matching the table in Cm 722, the 1989 Green Paper.
# ## Lines like this are comments.
# ## Lines with a single # at the start are copied into the output
# ## Control lines are of the form
# ## <years> <start date> <end date> <flags> <double start> <double end>
# ## <years> is either a single year or a hyphen separated range, with --
# ## also accepted as I use this in TeX a lot.
# ## <start date> and <end date> are a digit followed bu a month name.
# ## It is either an nth Saturday or an explicit date, depending on <flags>.
# ## 0 and/or none are used when there is no date, as during 1968--71.
# ## <flags> can contain `fixed' to indicate explicit dates and `double'
# ## to indicate double summer time dates are present.
# ## At present double requires fixed as well.
# ## <double start> and <double end> are like the start and end dates, with
# ## the exception of the 0 and/or none feature.
#
# ## Blank lines are also ignored.
#
# ## Places where I am uncertain, not having personally verified the dates
# ## against the Act or Order, are marked ???
# ## These dates are taken from the Cm 722 table.
#
# # Summer Time Act, 1916
# 1916 21 May 1 October fixed
#
# ## I haven't yet looked for Orders for 1916--22 and I doubt I will find them.
# # unknown Order or Orders ???
# 1917 8 apr 17 sep fixed
# 1918 24 mar 30 sep fixed
# 1919 30 mar 29 sep fixed
# # end date extended in 1920 from 27 Sep because of coal strike (from Cm 722)
# 1920 28 mar 25 oct fixed
# 1921 3 apr 3 oct fixed
#
# # Summer Time Act, 1922
# # came into force 22 July 1922, too late for 1922, so missing Order ???
# 1922 26 mar 8 oct fixed
# 1923-1924 3 April 3 September
#
# # Summer Time Act, 1925
# 1925--1938 3 April 1 October
#
# # Defence (Summer Time) Regulations, 1939
# 1939 3 April 3 November
# # 1940 amendment (SR&O 1940 Nos. 172 & 1883)
# 1940 4 feb 0 none
# # 1941 amendment (SR&O 1941 No. 476)
# 1941 0 none 0 none fixed,double 4 may 10 aug
# # 1942 amendment (SR&O 1942 No. 506)
# 1942 0 none 0 none fixed,double 5 apr 9 aug
# 1943 0 none 0 none fixed,double 4 apr 15 aug
# # 1944 amendment (SR&O 1944 No. 932)
# 1944 0 none 0 none fixed,double 2 apr 17 sep
# # 1945 dates from Hansard, Oral Answers, 1 March 1945
# 1945 0 none 7 oct fixed,double 2 apr 15 jul
#
# # reversion to Summer Time Act, 1925
# 1946 3 April 1 October
#
# # Summer Time Act, 1947
# # Fixed dates for 1947 only, gives power to have double summer time
# 1947 16 mar 2 nov fixed,double 13 apr 10 aug
# ## I can't find any trace of the Order for 1948.
# # Unknown Order ???
# 1948 14 mar 31 oct fixed
# ## I know the numbers for the 1949--52 ones but the text is missing from the
# ## annual volumes. I also don't know if the 49 Order was for 49 or 50, etc.
# # Summer Time Order, 1949 (SI1949/373) ???
# 1949 3 apr 30 oct fixed
# # Summer Time Order, 1950 (SI1950/518) ???
# 1950 16 apr 22 oct fixed
# # Summer Time Order, 1951 (SI1951/430) ???
# 1951 15 apr 21 oct fixed
# # Summer Time Order, 1952 (SI1952/451) ???
# 1952 20 apr 26 oct fixed
#
# # reversion to Summer Time Act, 1925
# 1953--1960 3 April 1 October
#
# ## All Orders from here on specify fixed dates, not day after nth Sunday
# ## Start pattern looks like Mar lastSun up to 1963, Mar Sun>=19 up to 1967.
# ## End pattern looks like Oct Sun>=23 up to 1967.
# # Summer Time Order, 1961 (SI1961/71)
# 1961 26 March 29 October fixed
# # Summer Time (1962) Order, 1961 (SI1961/2465)
# 1962 25 Mar 28 Oct fixed
# # Summer Time Order, 1963 (SI1963/81)
# 1963 31 March 27 October fixed
# # Summer Time (1964) Order, 1963 (SI1963/2101)
# 1964 22 March 25 October fixed
# # Summer Time Order, 1964 (SI1964/1201)
# 1965 21 Mar 24 Oct fixed
# 1966 20 Mar 23 Oct fixed
# 1967 19 Mar 29 Oct fixed
# # Summer Time Order, 1967 (SI1967/1148)
# # Specifies different start date of 7 April for Isle of Man
# # Summer Time Order, 1968 (SI1968/117)
# # Changes Isle of Man start date to 18 Feb to match rest of UK
# # British Standard Time Act, 1968
# 1968 18 feb 0 none fixed
# 1969--1970 0 none 0 none
# 1971 0 none 31 oct fixed
#
# # Summer Time Act, 1972
# 1972-1980 3 March 4 October
#
# # The pattern here looks like Last Sun in Mar, day after 4th Sat in Oct
# # First EC Directive ???
# # Summer Time Order, 1980 (SI1980/1089)
# 1981 29 Mar 25 Oct fixed
# 1982 28 Mar 24 Oct fixed
# # Second EC Directive ???
# # Summer Time Order, 1982 (SI1982/1673)
# 1983 27 Mar 23 Oct fixed
# 1984 25 Mar 28 Oct fixed
# 1985 31 Mar 27 Oct fixed
# # Third EC Directive ???
# # Summer Time Order, 1986 (SI1986/223)
# 1986 30 Mar 26 Oct fixed
# 1987 29 Mar 25 Oct fixed
# 1988 27 Mar 23 Oct fixed
# # Fourth EC Directive ???
# # Summer Time Order, 1988 (SI1988/931)
# 1989 26 Mar 29 Oct fixed
# # Fifth EC Directive ???
# # Summer Time Order, 1989 (SI1989/985)
# 1990 25 Mar 28 Oct fixed
# 1991 31 Mar 27 Oct fixed
# 1992 29 Mar 25 Oct fixed
# # Sixth EC Directive
# # Summer Time Order, 1992 (SI1992/1729)
# 1993 28 Mar 24 Oct fixed
# 1994 27 Mar 23 Oct fixed
# From Peter Ilieve <peter@memex.co.uk> (August 18, 1994):
# I now have the text of the 7th EC directive on summer time arrangements
# (94/21/EC), which was approved on 30 May....
# The major changes from existing practice are that 1995 will be the last year
# that the UK and Eire finish on a different date from everyone else,
# and the common end date from 1996 onwards will be the last Sunday in October.
# Year Start End End (UK & Eire, 1995 only)
# (rule) (last Sun) (last Sun) (4th Sun)
# 1995 26 March 24 September 22 October
# 1996 31 March 27 October
# 1997 30 March 26 October
#
# From Peter Ilieve <peter@memex.co.uk> (1994-12-01):
# The final piece of the legislative jigsaw for summer time in the UK for
# 1995-97 is now in place. The Summer Time Order 1994 (SI 1994/2798)
# came into force on 16 November. It restates the dates from the EC
# seventh Summer Time Directive....
#
# From Peter Ilieve <peter@aldie.co.uk> (1996-04-20):
# Proposals for the eighth directive were supposed to have been produced
# by the Commission by 1 Jan 96. They have not yet appeared (I asked just
# before Easter).
# From Peter Ilieve <peter@memex.co.uk> (March 28, 1994):
# The [GB-Eire] end date of 22 October [1995] conflicts with your current rule
# of Oct Sun>=23, and the historical UK formula of Sun after 4th Sat.
# The last time 4th Sun and Sun after 4th Sat differed was in 1989,
# when 29 October was used. That year was covered by a UK Summer Time Order
# for only a single year and it looks as though there was a matching 4th EC
# directive for just this year. I don't have the text of the 5th EC
# directive (for 1990--92) but my guess would be it said 4th Sun.
# To maintain strict historical accuracy you could start a new UK ending rule
# of Oct Sun>=22 in 1990.
# From Paul Eggert <eggert@twinsun.com> (1996-06-12):
#
# As Ilieve remarks, the date `20 April 1924' in the table of ``Summer Time: A
# Consultation Document'' (Cm 722, 1989) table is a transcription error;
# 20 April was an Easter Sunday. Shanks has 13 April, the correct date.
# Also, the table is not quite right for 1925 through 1938; the correct rules
# (which Shanks uses) are given in the Summer Time Acts of 1922 and 1925.
# Shanks and the UK Government paper disagree about the Apr 1956 transition;
# since we have no other data, and since Shanks was correct in the other
# points of disagreement about London, we'll believe Shanks for now.
# Also, for lack of other data, we'll follow Shanks for Eire in 1940-1948.
#
# Given Peter Ilieve's comments, the following claims by Shanks are incorrect:
# * Wales did not switch from GMT to daylight savings time until
# 1921 Apr 3, when they began to conform with the rest of Great Britain.
# Actually, Wales was identical after 1880.
# * Eire had two transitions on 1916 Oct 1.
# It actually just had one transition.
# * Northern Ireland used single daylight savings time throughout WW II.
# Actually, it conformed to Britain.
# * GB-Eire changed standard time to 1 hour ahead of GMT on 1968-02-18.
# Actually, that date saw the usual switch to summer time.
# Standard time was not changed until 1968-10-27 (the clocks didn't change).
#
# The following claims by Shanks are possible though doubtful;
# we'll ignore them for now.
# * Jersey, Guernsey, and the Isle of Man did not switch from GMT
# to daylight savings time until 1921 Apr 3, when they began to
# conform with Great Britain.
# * 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.
# From an anonymous contributor (1996-06-02):
# The law governing time in Ireland is under Statutory Instrument SI 395/94,
# which gives force to European Union 7th Council Directive # 94/21/EC.
# Under this directive, the Minister for Justice in Ireland makes appropriate
# regulations. I spoke this morning with the Secretary of the Department of
# Justice (tel +353 1 678 9711) who confirmed to me that the correct name is
# "Irish Summer Time", abbreviated to "IST".
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# 1916 to 1925--irregular
Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST
Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT
Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST
Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT
Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST
Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT
Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST
Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT
Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST
Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT
Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST
Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT
Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST
Rule GB-Eire 1922 only - Oct 8 2:00s 0 GMT
Rule GB-Eire 1923 only - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1923 1924 - Sep Sun>=16 2:00s 0 GMT
Rule GB-Eire 1924 only - Apr 13 2:00s 1:00 BST
# 1925 to 1939 start--regular, except for avoiding Easter
Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT
Rule GB-Eire 1927 only - Apr 10 2:00s 1:00 BST
Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1930 only - Apr 13 2:00s 1:00 BST
Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1933 only - Apr 9 2:00s 1:00 BST
Rule GB-Eire 1934 only - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1935 only - Apr 14 2:00s 1:00 BST
Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1938 only - Apr 10 2:00s 1:00 BST
Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST
# 1939 end to 1947--irregular, and with double summer time
Rule GB-Eire 1939 only - Nov 19 2:00s 0 GMT
Rule GB-Eire 1940 only - Feb 25 2:00s 1:00 BST
Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 DST
Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST
Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 DST
Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST
# Double daylight starts on a Monday in 1945--see above.
Rule GB-Eire 1945 only - Apr 2 1:00s 2:00 DST
Rule GB-Eire 1945 only - Jul 15 1:00s 1:00 BST
Rule GB-Eire 1945 only - Oct 7 2:00s 0 GMT
Rule GB-Eire 1946 only - Apr 14 2:00s 1:00 BST
Rule GB-Eire 1946 only - Oct 6 2:00s 0 GMT
Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST
Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 DST
Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST
Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT
# So much for double saving time. 1948 and 1949, irregular.
Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST
Rule GB-Eire 1948 1949 - Oct lastSun 2:00s 0 GMT
Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST
# 1950 through start of 1953, regular.
Rule GB-Eire 1950 1953 - Apr Sun>=14 2:00s 1:00 BST
Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT
# 1954 to 1980, starting rules
Rule GB-Eire 1954 only - Apr 11 2:00s 1:00 BST
Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1957 only - Apr 14 2:00s 1:00 BST
Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST
Rule GB-Eire 1960 only - Apr 10 2:00s 1:00 BST
Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST
Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST
Rule GB-Eire 1968 only - Feb 18 2:00s 1:00 BST
Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST
# 1953 to 1980, ending rules
Rule GB-Eire 1953 1960 - Oct Sun>=1 2:00s 0 GMT
Rule GB-Eire 1961 1968 - Oct Sun>=23 2:00s 0 GMT
Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT
# 1981 on
Rule GB-Eire 1981 1995 - Mar lastSun 1:00u 1:00 BST
Rule GB-Eire 1981 1989 - Oct Sun>=23 1:00u 0 GMT
Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT
# See EU for rules starting in 1996.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/London -0:01:15 - LMT 1847 Sep 22
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 MT
-0:25:21 1:00 DST 1916 Oct 1 3:00
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/Dublin -0:25:21 - LMT 1880 Aug 2
-0:25:21 - DMT 1916 May 21 2:00 # Dublin MT
-0:25:21 1:00 DST 1916 Oct 1 3:00
0:00 GB-Eire %s 1921 Dec 6
0:00 GB-Eire GMT/IST 1940 Feb 25 2:00
0:00 1:00 IST 1946 Oct 6 2:00
0:00 - GMT 1947 Mar 16 2:00
0:00 1:00 IST 1947 Nov 2 2:00
0:00 - GMT 1948 Apr 18 2:00
0:00 GB-Eire GMT/IST 1968 Oct 27
1:00 - IST 1971 Oct 31 2:00u
0:00 GB-Eire GMT/IST 1996
0:00 EU GMT/IST
# ZONE-DESCR Europe London United_Kingdom All points except N. Ireland
# ZONE-DESCR Europe Belfast United_Kingdom Northern Ireland
# ZONE-DESCR Europe Dublin Eire All points
###############################################################################
# Continental Europe
# EU rules are for the European Union, previously known as the EC, EEC,
# Common Market, etc.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 " DST"
Rule EU 1977 only - Sep lastSun 1:00u 0 -
Rule EU 1978 only - Oct 1 1:00u 0 -
Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
Rule EU 1981 max - Mar lastSun 1:00u 1:00 " DST"
Rule EU 1996 max - Oct lastSun 1:00u 0 -
# W-Eur differs from EU only in that W-Eur uses standard time.
Rule W-Eur 1977 1980 - Apr Sun>=1 1:00s 1:00 " DST"
Rule W-Eur 1977 only - Sep lastSun 1:00s 0 -
Rule W-Eur 1978 only - Oct 1 1:00s 0 -
Rule W-Eur 1979 1995 - Sep lastSun 1:00s 0 -
Rule W-Eur 1981 max - Mar lastSun 1:00s 1:00 " DST"
Rule W-Eur 1996 max - Oct lastSun 1:00s 0 -
# Older M-Eur rules are for convenience in the tables.
# From 1977 on, M-Eur differs from EU only in that M-Eur uses standard time.
Rule M-Eur 1916 only - Apr 30 23:00 1:00 " DST"
Rule M-Eur 1916 only - Oct 1 1:00 0 -
Rule M-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 " DST"
Rule M-Eur 1917 1918 - Sep Mon>=15 2:00s 0 -
Rule M-Eur 1940 only - Apr 1 2:00s 1:00 " DST"
# Whitman says 1941 DST was only from Feb 25 to Oct 5; go with Shanks.
Rule M-Eur 1942 only - Nov 2 2:00s 0 -
Rule M-Eur 1943 only - Mar 29 2:00s 1:00 " DST"
Rule M-Eur 1943 only - Oct 4 2:00s 0 -
Rule M-Eur 1944 only - Apr 3 2:00s 1:00 " DST"
# Whitman gives 1944 Oct 7; go with Shanks.
Rule M-Eur 1944 only - Oct 2 2:00s 0 -
Rule M-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 " DST"
Rule M-Eur 1977 only - Sep lastSun 2:00s 0 -
Rule M-Eur 1978 only - Oct 1 2:00s 0 -
Rule M-Eur 1979 1995 - Sep lastSun 2:00s 0 -
Rule M-Eur 1981 max - Mar lastSun 2:00s 1:00 " DST"
Rule M-Eur 1996 max - Oct lastSun 2:00s 0 -
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Russia 1917 only - Jul 1 23:00 1:00 " DST"
Rule Russia 1917 only - Dec 28 0:00 0 -
Rule Russia 1918 only - May 31 22:00 2:00 " DDST"
Rule Russia 1918 only - Sep 17 0:00 1:00 " DST"
Rule Russia 1919 only - May 31 23:00 2:00 " DDST"
Rule Russia 1919 only - Jul 1 2:00 1:00 D
Rule Russia 1919 only - Aug 16 0:00 0 K
Rule Russia 1921 only - Feb 14 23:00 1:00 D
# Shanks gives 1921 Mar 21 for the following transition.
# From Andrew A. Chernov <ache@astral.msk.su> (November 12, 1993):
# My sources says, that it is Mar 20, not 21.
Rule Russia 1921 only - Mar 20 23:00 2:00 DD
Rule Russia 1921 only - Sep 1 0:00 1:00 D
Rule Russia 1921 only - Oct 1 0:00 0 K
Rule Russia 1981 1984 - Apr 1 0:00 1:00 D
Rule Russia 1981 1983 - Oct 1 0:00 0 K
Rule Russia 1984 max - Sep lastSun 2:00s 0 K
Rule Russia 1985 max - Mar lastSun 2:00s 1:00 D
# These are for backward compatibility with older versions.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone WET 0:00 EU WET%s
Zone MET 1:00 M-Eur MET%s
Zone EET 2:00 EU EET%s
# Tom Hoffman says that MET is also known as Central European Time
Link MET CET
# Albania
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Albania 1940 only - Jun 16 0:00 1:00 " DST"
Rule Albania 1942 only - Nov 2 3:00 0 -
Rule Albania 1943 only - Mar 29 2:00 1:00 " DST"
Rule Albania 1943 only - Apr 10 3:00 0 -
Rule Albania 1974 only - May 4 0:00 1:00 " DST"
Rule Albania 1974 only - Oct 2 0:00 0 -
Rule Albania 1975 only - May 1 0:00 1:00 " DST"
Rule Albania 1975 only - Oct 2 0:00 0 -
Rule Albania 1976 only - May 2 0:00 1:00 " DST"
Rule Albania 1976 only - Oct 3 0:00 0 -
Rule Albania 1977 only - May 8 0:00 1:00 " DST"
Rule Albania 1977 only - Oct 2 0:00 0 -
Rule Albania 1978 only - May 6 0:00 1:00 " DST"
Rule Albania 1978 only - Oct 1 0:00 0 -
Rule Albania 1979 only - May 5 0:00 1:00 " DST"
Rule Albania 1979 only - Sep 30 0:00 0 -
Rule Albania 1980 only - May 3 0:00 1:00 " DST"
Rule Albania 1980 only - Oct 4 0:00 0 -
Rule Albania 1981 only - Apr 26 0:00 1:00 " DST"
Rule Albania 1981 only - Sep 27 0:00 0 -
Rule Albania 1982 only - May 2 0:00 1:00 " DST"
Rule Albania 1982 only - Oct 3 0:00 0 -
Rule Albania 1983 only - Apr 18 0:00 1:00 " DST"
Rule Albania 1983 only - Oct 1 0:00 0 -
Rule Albania 1984 only - Apr 1 0:00 1:00 " DST"
Rule Albania 1984 only - Oct 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Tirane 1:19:20 - LMT 1914
1:00 - MET 1940 Jun 16
1:00 Albania MET%s 1985 Mar 31 1:00
1:00 W-Eur MET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Tirane Albania All points
# Andorra
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Andorra 0:06:04 - LMT 1901
0:00 - WET 1946 Sep 30
1:00 - MET 1985 Mar 31 2:00
1:00 EU MET%s
# ZONE-DESCR Europe Andorra Andorra All points
# Austria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Austria 1920 only - Apr 5 2:00s 1:00 " DST"
Rule Austria 1920 only - Sep 13 2:00s 0 -
Rule Austria 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Austria 1945 only - Nov 18 2:00s 0 -
Rule Austria 1946 only - Apr 14 2:00s 1:00 " DST"
Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
Rule Austria 1947 only - Apr 6 2:00s 1:00 " DST"
Rule Austria 1948 only - Apr 18 2:00s 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Vienna 1:05:20 - LMT 1893 Apr
1:00 M-Eur MET%s 1918 Jun 16 3:00
1:00 Austria MET%s 1940 Apr 1 2:00
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Austria MET%s 1981
1:00 EU MET%s
# ZONE-DESCR Europe Vienna Austria All points
# Belarus
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Minsk 1:50:16 - LMT 1880
2:31 Russia LST%s 1919 Jul 1 2:00
3:00 Russia MS%s 1922 Oct
2:00 - EET 1930 Jun 21
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Minsk Belarus All points
# Belgium
# Whitman and Shanks disagree; go with Shanks, usually.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# From Whitman:
Rule Belgium 1919 only - Mar 1 23:00s 1:00 " DST"
Rule Belgium 1919 only - Oct 4 23:00s 0 -
# Shanks gives 1920 Feb 14 23:00s; go with Whitman.
Rule Belgium 1920 1921 - Mar 14 23:00s 1:00 " DST"
Rule Belgium 1920 only - Oct 23 23:00s 0 -
Rule Belgium 1921 only - Oct 25 23:00s 0 -
Rule Belgium 1922 only - Mar 25 23:00s 1:00 " DST"
# Whitman gives 1927 Oct 1 2:00s and 1928 Oct 7 2:00s; go with Shanks.
Rule Belgium 1922 1928 - Oct Sat>=1 23:00s 0 -
Rule Belgium 1923 only - Apr 21 23:00s 1:00 " DST"
Rule Belgium 1924 only - Mar 29 23:00s 1:00 " DST"
Rule Belgium 1925 only - Apr 4 23:00s 1:00 " DST"
Rule Belgium 1926 only - Apr 17 23:00s 1:00 " DST"
Rule Belgium 1927 only - Apr 9 23:00s 1:00 " DST"
Rule Belgium 1928 only - Apr 14 23:00s 1:00 " DST"
Rule Belgium 1929 only - Apr 21 2:00s 1:00 " DST"
Rule Belgium 1929 1938 - Oct Sun>=2 2:00s 0 -
Rule Belgium 1930 only - Apr 13 2:00s 1:00 " DST"
Rule Belgium 1931 only - Apr 19 2:00s 1:00 " DST"
Rule Belgium 1932 only - Apr 17 2:00s 1:00 " DST"
Rule Belgium 1933 only - Mar 26 2:00s 1:00 " DST"
Rule Belgium 1934 only - Apr 8 2:00s 1:00 " DST"
Rule Belgium 1935 only - Mar 31 2:00s 1:00 " DST"
Rule Belgium 1936 only - Apr 19 2:00s 1:00 " DST"
# Whitman says 1937 Apr 18 2:00s; go with Shanks.
Rule Belgium 1937 only - Apr 4 2:00s 1:00 " DST"
# Whitman says 1938 Apr 10 2:00s; go with Shanks.
Rule Belgium 1938 only - Mar 27 2:00s 1:00 " DST"
Rule Belgium 1939 only - Apr 16 2:00s 1:00 " DST"
Rule Belgium 1939 only - Nov 19 2:00s 0 -
Rule Belgium 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Belgium 1945 only - Sep 16 2:00s 0 -
Rule Belgium 1946 only - May 19 2:00s 1:00 " DST"
Rule Belgium 1946 only - Oct 7 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Brussels 0:17:20 - LMT 1880
0:17 - BST 1892 May 1 12:00
0:00 - WET 1914 Aug 4
1:00 M-Eur MET%s 1919 Mar 1 23:00
0:00 Belgium WET%s 1940 Feb 24 23:00
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Belgium MET%s 1977
1:00 EU MET%s
# ZONE-DESCR Europe Brussels Belgium All points
# Bosnia and Herzegovina
# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Sarajevo 1:13:40 - LMT 1884
1:00 - MET 1941 Apr 18 23:00
1:00 M-Eur MET%s 1945 May 8 2:00s
1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1:00 - MET 1983
1:00 EU MET%s
# ZONE-DESCR Europe Sarajevo Bosnia_and_Herzegovina All points
# Bulgaria
# Part switched from the Julian to the Gregorian calendar on 1915 Nov 14;
# the rest switched on 1920 Sep 17.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Bulg 1979 only - Mar 31 23:00 1:00 " DST"
Rule Bulg 1979 only - Oct 1 1:00 0 -
Rule Bulg 1980 1982 - Apr Sat<=7 23:00 1:00 " DST"
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
1:57 - TST 1894 Nov 30
2:00 - EET 1942 Nov 2 3:00
1:00 M-Eur MET%s 1945 Apr 2 3:00
2:00 - EET 1979 Mar 31 23:00
2:00 Bulg EET%s 1982 Sep 26 2:00
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Sofia Bulgaria All points
# Croatia
# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Zagreb 1:03:52 - LMT 1884
1:00 - MET 1941 Apr 18 23:00
1:00 M-Eur MET%s 1945 May 8 2:00s
1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1:00 - MET 1983
1:00 EU MET%s
# ZONE-DESCR Europe Zagreb Croatia All points
# Czech Republic
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Czech 1945 only - Apr 8 2:00s 1:00 " DST"
Rule Czech 1945 only - Nov 18 2:00s 0 -
Rule Czech 1946 only - May 6 2:00s 1:00 " DST"
Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
Rule Czech 1947 only - Apr 20 2:00s 1:00 " DST"
Rule Czech 1948 only - Apr 18 2:00s 1:00 " DST"
Rule Czech 1949 only - Apr 9 2:00s 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Prague 0:57:44 - LMT 1850
0:58 - PMT 1891 Oct # Prague Mean Time
1:00 M-Eur MET%s 1944 Sep 17 2:00s
1:00 Czech MET%s 1979
1:00 EU MET%s
# ZONE-DESCR Europe Prague Czech_Republic All points
# Denmark
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Denmark 1916 only - May 14 23:00 1:00 " DST"
Rule Denmark 1916 only - Sep 30 23:00 0 -
Rule Denmark 1940 only - May 15 0:00 1:00 " DST"
Rule Denmark 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Denmark 1945 only - Aug 15 2:00s 0 -
Rule Denmark 1946 only - May 1 2:00s 1:00 " DST"
Rule Denmark 1946 only - Sep 1 2:00s 0 -
Rule Denmark 1947 only - May 4 2:00s 1:00 " DST"
Rule Denmark 1947 only - Aug 10 2:00s 0 -
Rule Denmark 1948 only - May 9 2:00s 1:00 " DST"
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 - CMT 1894 Apr # Copenhagen Mean Time
1:00 Denmark MET%s 1942 Nov 2 2:00s
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Denmark MET%s 1980
1:00 EU MET%s
Zone Atlantic/Faeroe -0:27:04 - LMT 1908 Jan 11 # Torshavn
0:00 - WET 1981
0:00 EU WET%s
Zone America/Scoresbysund -1:29:00 - LMT 1916 Jul 28
-2:00 - MGT 1980 Apr 6 2:00
-2:00 M-Eur MGT%s 1981 Mar 29
-1:00 M-Eur EGT%s
Zone America/Godthab -3:26:56 - LMT 1916 Jul 28
-3:00 - WGT 1980 Apr 6 2:00
-3:00 M-Eur WGT%s
Zone America/Thule -4:35:08 - LMT 1916 Jul 28
-4:00 - AST
# ZONE-DESCR Europe Copenhagen Denmark All points except:
# ZONE-DESCR Atlantic Faeroe Denmark Faeroe Islands
# ZONE-DESCR America Scoresbysund Greenland Eastern Greenland
# ZONE-DESCR America Godthab Greenland Western Greenland
# ZONE-DESCR America Thule Greenland Far Western Greenland (Thule)
# Estonia
# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
#
# From Peter Ilieve <peter@memex.co.uk> (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....
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Tallinn 1:39:00 - LMT 1880
1:39 - LST 1918 Feb
1:00 M-Eur MET%s 1919 Jul
1:39 - LST 1921 May
2:00 - EET 1940 Aug 6
3:00 - MSK 1941 Sep 15
1:00 M-Eur MET%s 1944 Sep 22
3:00 Russia MS%s 1989 Mar 26 2:00s
2:00 1:00 "EET DST" 1989 Sep 24 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Tallinn Estonia All points
# Finland
#
# From Hannu Strang <chs@apu.fi> (25 Sep 1994 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.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Finland 1942 only - Apr 3 0:00 1:00 " DST"
Rule Finland 1942 only - Oct 3 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Helsinki 1:39:52 - LMT 1878 May 31
1:40 - HMT 1921 May # Helsinki Mean Time
2:00 Finland EET%s 1981 Mar 29 2:00
2:00 EU EET%s
# ZONE-DESCR Europe Helsinki Finland All points
# France
# Shanks seems to use `24:00' ambiguously; we resolve it with Whitman.
# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule France 1916 only - Jun 14 23:00s 1:00 " DST"
Rule France 1916 1919 - Oct Sun>=1 0:00 0 -
Rule France 1917 only - Mar 24 23:00s 1:00 " DST"
Rule France 1918 only - Mar 9 23:00s 1:00 " DST"
Rule France 1919 only - Mar 1 23:00s 1:00 " DST"
Rule France 1920 only - Feb 14 23:00s 1:00 " DST"
Rule France 1920 only - Oct 23 23:00s 0 -
Rule France 1921 only - Mar 14 23:00s 1:00 " DST"
Rule France 1921 only - Oct 25 23:00s 0 -
Rule France 1922 only - Mar 25 23:00s 1:00 " DST"
Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
Rule France 1923 only - May 26 23:00s 1:00 " DST"
Rule France 1924 only - Mar 29 23:00s 1:00 " DST"
Rule France 1925 only - Apr 4 23:00s 1:00 " DST"
Rule France 1926 only - Apr 17 23:00s 1:00 " DST"
Rule France 1927 only - Apr 9 23:00s 1:00 " DST"
Rule France 1928 only - Apr 14 23:00s 1:00 " DST"
Rule France 1929 only - Apr 20 23:00s 1:00 " DST"
Rule France 1930 only - Apr 12 23:00s 1:00 " DST"
Rule France 1931 only - Apr 18 23:00s 1:00 " DST"
Rule France 1932 only - Apr 2 23:00s 1:00 " DST"
Rule France 1933 only - Mar 25 23:00s 1:00 " DST"
Rule France 1934 only - Apr 7 23:00s 1:00 " DST"
Rule France 1935 only - Mar 30 23:00s 1:00 " DST"
Rule France 1936 only - Apr 18 23:00s 1:00 " DST"
Rule France 1937 only - Apr 3 23:00s 1:00 " DST"
Rule France 1938 only - Mar 26 23:00s 1:00 " DST"
Rule France 1939 only - Apr 15 23:00s 1:00 " DST"
Rule France 1939 only - Nov 18 23:00s 0 -
Rule France 1940 only - Feb 25 2:00 1:00 " DST"
# The French rules for 1941-1944 were not used in Paris,
# but were used in other places (e.g. Monaco).
Rule France 1941 only - May 5 0:00 2:00 " DDST"
Rule France 1941 only - Oct 6 1:00 1:00 " DST"
Rule France 1942 only - Mar 8 0:00 2:00 " DDST"
Rule France 1942 only - Nov 2 3:00 1:00 " DST"
Rule France 1943 only - Mar 29 2:00 2:00 " DDST"
Rule France 1943 only - Nov 4 3:00 1:00 " DST"
Rule France 1944 only - Apr 3 2:00 2:00 " DDST"
Rule France 1944 only - Oct 8 1:00 1:00 " DST"
Rule France 1945 only - Apr 2 2:00 2:00 " DDST"
Rule France 1945 only - Sep 16 3:00 0 -
Rule France 1976 only - Mar 28 2:00s 1:00 " DST"
Rule France 1976 only - Sep lastSun 2:00s 0 -
# Shanks gives 0:09 for Paris Mean Time, and Whitman gives 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 # Paris Mean Time
0:00 France WET%s 1940 Jun 14
1:00 M-Eur MET%s 1944 Aug 25
0:00 France WET%s 1945 Sep 16 3:00
1:00 France MET%s 1977
1:00 EU MET%s
# ZONE-DESCR Europe Paris France All points
# Germany
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Germany 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Germany 1945 only - May 24 2:00 2:00 " DDST"
Rule Germany 1945 only - Sep 24 3:00 1:00 " DST"
Rule Germany 1945 only - Nov 18 2:00s 0 -
Rule Germany 1946 only - Apr 14 2:00s 1:00 " DST"
# Whitman gives 1948 Oct 31; go with Shanks.
Rule Germany 1946 1949 - Oct Sun>=1 2:00s 0 -
Rule Germany 1947 only - Apr 6 2:00s 1:00 " DST"
Rule Germany 1947 only - May 11 2:00s 2:00 " DDST"
Rule Germany 1947 only - Jun 29 3:00 1:00 " DST"
Rule Germany 1948 only - Apr 18 2:00s 1:00 " DST"
Rule Germany 1949 only - Apr 10 2:00s 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Germany MET%s 1980
1:00 EU MET%s
# ZONE-DESCR Europe Berlin Germany All points
# Gibraltar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2
0:00 GB-Eire %s 1957 Apr 14 2:00
1:00 - MET 1982
1:00 EU MET%s
# ZONE-DESCR Europe Gibraltar United_Kingdom Gibraltar
# Greece
# They adopted the Julian calendar in 1846.
# Part switched to the Gregorian calendar on 1916 Jul 28.
# The rest switched on 1920 Mar 18.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman gives 1932 Jul 5 - Nov 1; go with Shanks.
Rule Greece 1932 only - Jul 7 0:00 1:00 " DST"
Rule Greece 1932 only - Sep 1 0:00 0 -
# Whitman gives 1941 Apr 25 - ?; go with Shanks.
Rule Greece 1941 only - Apr 7 0:00 1:00 " DST"
# Whitman gives 1942 Feb 2 - ?; go with Shanks.
Rule Greece 1942 only - Nov 2 3:00 0 -
Rule Greece 1943 only - Mar 30 0:00 1:00 " DST"
Rule Greece 1943 only - Oct 4 0:00 0 -
# Whitman gives 1944 Oct 3 - Oct 31; go with Shanks.
Rule Greece 1952 only - Jul 1 0:00 1:00 " DST"
Rule Greece 1952 only - Nov 2 0:00 0 -
Rule Greece 1975 only - Apr 12 0:00s 1:00 " DST"
Rule Greece 1975 only - Nov 26 0:00s 0 -
Rule Greece 1976 only - Apr 11 2:00s 1:00 " DST"
Rule Greece 1976 only - Oct 10 2:00s 0 -
Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 " DST"
Rule Greece 1977 only - Sep 26 2:00s 0 -
Rule Greece 1978 only - Sep 24 4:00 0 -
Rule Greece 1979 only - Apr 1 9:00 1:00 " DST"
Rule Greece 1979 only - Sep 29 2:00 0 -
Rule Greece 1980 only - Apr 1 0:00 1:00 " DST"
Rule Greece 1980 only - Sep 28 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
1:35 - AMT 1916 Jul 28 0:01 # Athens MT
2:00 Greece EET%s 1941 Apr 30
1:00 Greece MET%s 1944 Apr 4
2:00 Greece EET%s 1981
# Shanks says they switched to M-Eur in 1981;
# go with EU intead, since Greece joined it on Jan 1.
2:00 EU EET%s
# ZONE-DESCR Europe Athens Greece All points
# Hungary
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Hungary 1918 only - Apr 1 3:00 1:00 " DST"
Rule Hungary 1918 only - Sep 29 3:00 0 -
Rule Hungary 1919 only - Apr 15 3:00 1:00 " DST"
Rule Hungary 1919 only - Sep 15 3:00 0 -
Rule Hungary 1920 only - Apr 5 3:00 1:00 " DST"
Rule Hungary 1920 only - Sep 30 3:00 0 -
Rule Hungary 1945 only - May 1 23:00 1:00 " DST"
Rule Hungary 1945 only - Nov 3 0:00 0 -
Rule Hungary 1946 only - Mar 31 2:00s 1:00 " DST"
Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 " DST"
Rule Hungary 1950 only - Apr 17 2:00s 1:00 " DST"
Rule Hungary 1950 only - Oct 23 2:00s 0 -
Rule Hungary 1954 1955 - May 23 0:00 1:00 " DST"
Rule Hungary 1954 1955 - Oct 3 0:00 0 -
Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 " DST"
Rule Hungary 1956 only - Sep lastSun 0:00 0 -
Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 " DST"
Rule Hungary 1957 only - Sep lastSun 3:00 0 -
Rule Hungary 1980 only - Apr 6 1:00 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1:00 M-Eur MET%s 1918
1:00 Hungary MET%s 1941 Apr 6 2:00
1:00 M-Eur MET%s 1945 May 1 23:00
1:00 Hungary MET%s 1980 Sep 28 2:00s
1:00 EU MET%s
# ZONE-DESCR Europe Budapest Hungary All points
# Iceland
#
# From Adam David <adam@veda.is> (November 6, 1993):
# The name of the timezone in Iceland for system / mail / news purposes is GMT.
#
# (December 5, 1993):
# This material is paraphrased from the 1988 edition of the University of
# Iceland Almanak.
#
# From January 1st, 1908 the whole of Iceland was standardised at 1 hour
# behind GMT. Previously, local mean solar time was used in different parts
# of Iceland, the almanak had been based on Reykjavik mean solar time which
# was 1 hour and 28 minutes behind GMT.
#
# "first day of winter" referred to [below] means the first day of the 26 weeks
# of winter, according to the old icelandic calendar that dates back to the
# time the norsemen first settled Iceland. The first day of winter is always
# Saturday, but is not dependent on the Julian or Gregorian calendars.
#
# (December 10, 1993):
# I have a reference from the Oxford Icelandic-English dictionary for the
# beginning of winter, which ties it to the ecclesiastical calendar (and thus
# to the julian/gregorian calendar) over the period in question.
# the winter begins on the Saturday next before St. Luke's day
# (old style), or on St. Luke's day, if a Saturday.
# St. Luke's day ought to be traceable from ecclesiastical sources. "old style"
# might be a reference to the Julian calendar as opposed to Gregorian, or it
# might mean something else (???). The Gregorian calendar was not introduced
# in Iceland until 1700.
#
# From Paul Eggert <eggert@twinsun.com> (December 9, 1993):
# 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 -1:28 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 D
Rule Iceland 1917 only - Oct 21 1:00 0 S
Rule Iceland 1918 only - Nov 16 1:00 0 S
Rule Iceland 1939 only - Apr 29 23:00 1:00 D
Rule Iceland 1939 only - Nov 29 2:00 0 S
Rule Iceland 1940 only - Feb 25 2:00 1:00 D
Rule Iceland 1940 only - Nov 3 2:00 0 S
Rule Iceland 1941 only - Mar 2 1:00s 1:00 D
Rule Iceland 1941 only - Nov 2 1:00s 0 S
Rule Iceland 1942 only - Mar 8 1:00s 1:00 D
Rule Iceland 1942 only - Oct 25 1:00s 0 S
# 1943-1946 - first Sunday in March until first Sunday in winter
Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 D
Rule Iceland 1943 1948 - Oct Sun>=22 1:00s 0 S
# 1947-1967 - first Sunday in April until first Sunday in winter
Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 D
# 1949 Oct transition delayed by 1 week
Rule Iceland 1949 only - Oct 30 1:00s 0 S
Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 S
Rule Iceland 1967 only - Oct 29 1:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Reykjavik -1:27:24 - LMT 1837
-1:28 - RMT 1908 # Reykjavik Mean Time
-1:00 Iceland I%sT 1968 Apr 7 1:00s
0:00 - GMT
# ZONE-DESCR Atlantic Reykjavik Iceland All points
# Italy
# From Paul Eggert (1996-05-06):
# For Italian DST we have three sources: Shanks, Whitman, and F. Pollastri
# <URL:http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html> (see `FP' below),
# taken from a publication of the Italian National Electrotechnical Institute.
# When the three sources disagree, guess who's right, as follows:
#
# year FP Shanks (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
# 09-30 09-29 24:00 09-30 01:00 FP & W
# 1918 03-09 03-09 24:00 03-09 00:00 FP & S
# 10-06 10-05 24:00 10-06 01:00 FP & W
# 1919 03-01 03-01 24:00 03-01 00:00 FP & S
# 10-04 10-04 24:00 10-04 01:00 FP; guess 24:00s
# 1920 03-20 03-20 24:00 03-20 00:00 FP & S
# 09-18 09-18 24:00 10-01 01:00 FP; guess 24:00s
# 1944 04-02 04-03 02:00 S (see M-Eur)
# 09-16 10-02 03:00 FP; guess 24:00s
# 1945 09-14 09-16 24:00 FP; guess 24:00s
# 1970 05-21 05-31 00:00 S
# 09-20 09-27 00:00 S
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Italy 1916 only - Jun 3 0:00s 1:00 " DST"
Rule Italy 1916 only - Oct 1 0:00s 0 -
Rule Italy 1917 only - Apr 1 0:00s 1:00 " DST"
Rule Italy 1917 only - Sep 30 0:00s 0 -
Rule Italy 1918 only - Mar 10 0:00s 1:00 " DST"
Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 -
Rule Italy 1919 only - Mar 2 0:00s 1:00 " DST"
Rule Italy 1920 only - Mar 21 0:00s 1:00 " DST"
Rule Italy 1920 only - Sep 19 0:00s 0 -
Rule Italy 1940 only - Jun 15 0:00s 1:00 " DST"
Rule Italy 1944 only - Sep 17 0:00s 0 -
Rule Italy 1945 only - Apr 2 2:00 1:00 " DST"
Rule Italy 1945 only - Sep 15 0:00s 0 -
Rule Italy 1946 only - Mar 17 2:00s 1:00 " DST"
Rule Italy 1946 only - Oct 6 2:00s 0 -
Rule Italy 1947 only - Mar 16 0:00s 1:00 " DST"
Rule Italy 1947 only - Oct 5 0:00s 0 -
Rule Italy 1948 only - Feb 29 2:00s 1:00 " DST"
Rule Italy 1948 only - Oct 3 2:00s 0 -
Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 " DST"
Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
Rule Italy 1969 only - Jun 1 0:00 1:00 " DST"
Rule Italy 1970 only - May 31 0:00 1:00 " DST"
Rule Italy 1970 only - Sep lastSun 0:00 0 -
Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 " DST"
Rule Italy 1971 only - Sep lastSun 1:00 0 -
Rule Italy 1972 only - Oct 1 0:00 0 -
Rule Italy 1973 only - Jun 3 0:00 1:00 " DST"
Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
Rule Italy 1974 only - May 26 0:00 1:00 " DST"
Rule Italy 1975 only - Jun 1 0:00s 1:00 " DST"
Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
Rule Italy 1976 only - May 30 0:00s 1:00 " DST"
Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 " DST"
Rule Italy 1978 only - Oct 1 0:00s 0 -
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
0:50 - RMT 1893 Nov # Rome Mean Time
1:00 Italy MET%s 1942 Nov 2 2:00s
1:00 M-Eur MET%s 1944 Jul
1:00 Italy MET%s 1980
1:00 EU MET%s
Link Europe/Rome Europe/Vatican
Link Europe/Rome Europe/San_Marino
# ZONE-DESCR Europe Rome Italy All points
# ZONE-DESCR Europe Vatican Holy_See All points
# ZONE-DESCR Europe San_Marino San_Marino All points
# Latvia
# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Riga 1:36:24 - LMT 1880
1:36 - LST 1918 Apr 15 2:00
1:36 M-Eur LST%s 1919 Apr 1 2:00
1:36 1:00 "LST DST" 1919 May 22 3:00
1:36 - LST 1926 May 11
2:00 - EET 1940 Aug 5
3:00 - MSK 1941 Jul
1:00 M-Eur MET%s 1944 Aug 8
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Riga Latvia All points
# Liechtenstein
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun
1:00 - MET 1981
1:00 EU MET%s
# ZONE-DESCR Europe Vaduz Liechtenstein All points
# Lithuania
# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Vilnius 1:41:16 - LMT 1880
1:24 - LST 1917 # Kaunas
1:36 - LST 1919 Oct 10
1:00 - MET 1920 Jul 12
2:00 - EET 1920 Oct 9
1:00 - MET 1940 Aug 3
3:00 - MSK 1941 Jun 24
1:00 M-Eur MET%s 1944 Aug
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Vilnius Lithuania All points
# Luxembourg
# Whitman disagrees with most of these dates in minor ways; go with Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Lux 1916 only - May 14 23:00 1:00 " DST"
Rule Lux 1916 only - Oct 1 1:00 0 -
Rule Lux 1917 only - Apr 28 23:00 1:00 " DST"
Rule Lux 1917 only - Sep 17 1:00 0 -
Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 " DST"
Rule Lux 1918 only - Sep Mon>=15 2:00s 0 -
Rule Lux 1919 only - Mar 1 23:00 1:00 " DST"
Rule Lux 1919 only - Oct 5 3:00 0 -
Rule Lux 1920 only - Feb 14 23:00 1:00 " DST"
Rule Lux 1920 only - Oct 24 2:00 0 -
Rule Lux 1921 only - Mar 14 23:00 1:00 " DST"
Rule Lux 1921 only - Oct 26 2:00 0 -
Rule Lux 1922 only - Mar 25 23:00 1:00 " DST"
Rule Lux 1922 only - Oct Sun>=2 1:00 0 -
Rule Lux 1923 only - Apr 21 23:00 1:00 " DST"
Rule Lux 1923 only - Oct Sun>=2 2:00 0 -
Rule Lux 1924 only - Mar 29 23:00 1:00 " DST"
Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 -
Rule Lux 1925 only - Apr 5 23:00 1:00 " DST"
Rule Lux 1926 only - Apr 17 23:00 1:00 " DST"
Rule Lux 1927 only - Apr 9 23:00 1:00 " DST"
Rule Lux 1928 only - Apr 14 23:00 1:00 " DST"
Rule Lux 1929 only - Apr 20 23:00 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
1:00 Lux MET%s 1918 Nov 25
0:00 Lux WET%s 1929 Oct 6 2:00s
0:00 Belgium WET%s 1940 May 14 3:00
1:00 M-Eur WET%s 1944 Sep 18 3:00
1:00 Belgium MET%s 1977
1:00 EU MET%s
# ZONE-DESCR Europe Luxembourg Luxembourg All points
# Macedonia
# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Skopje 1:25:44 - LMT 1884
1:00 - MET 1941 Apr 18 23:00
1:00 M-Eur MET%s 1945 May 8 2:00s
1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1:00 - MET 1983
1:00 EU MET%s
# ZONE-DESCR Europe Skopje Fmr_Yugoslav_Rep_Of_Macedonia All points
# Malta
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Malta 1973 only - Mar 31 0:00s 1:00 " DST"
Rule Malta 1973 only - Sep 29 0:00s 0 -
Rule Malta 1974 only - Apr 21 0:00s 1:00 " DST"
Rule Malta 1974 only - Sep 16 0:00s 0 -
Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 " DST"
Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
Rule Malta 1980 only - Mar 31 2:00 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta
1:00 Italy MET%s 1942 Nov 2 2:00s
1:00 M-Eur MET%s 1945 Apr 2 2:00s
1:00 Italy MET%s 1973 Mar 31
1:00 Malta MET%s 1981
1:00 EU MET%s
# ZONE-DESCR Europe Malta Malta All points
# Moldova
# They switched from the Julian to the Gregorian calendar on 1919 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Chisinau 1:55:20 - LMT 1924 May 2
2:00 - EET 1930 Jun 21
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Chisinau Moldova All points
# Monaco
# Shanks gives 0:09 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
0:00 France WET%s 1945 Sep 16 3:00
1:00 France MET%s 1977
1:00 EU MET%s
# ZONE-DESCR Europe Monaco Monaco All points
# Netherlands
# Howse writes that the Netherlands' railways used GMT between 1892 and 1940,
# but for other purposes the Netherlands used Amsterdam mean time.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Shanks gives 1916 May 1 0:00 and 1916 Oct 1 0:00; go with Whitman.
Rule Neth 1916 only - May 1 2:00s 1:00 NST
Rule Neth 1916 only - Oct 2 2:00s 0 AMT
Rule Neth 1917 only - Apr 16 2:00s 1:00 NST
Rule Neth 1917 only - Sep 17 2:00s 0 AMT
# Whitman gives 1918 Apr 14, 1918 Oct 31, and 1921 Sep 28; go with Shanks.
Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST
Rule Neth 1918 1921 - Sep Mon>=24 2:00s 0 AMT
Rule Neth 1922 only - Mar 26 2:00s 1:00 NST
# Whitman gives 1939 Oct 1; go with Shanks.
Rule Neth 1922 1939 - Oct Sun>=2 2:00s 0 AMT
Rule Neth 1923 only - Jun 1 2:00s 1:00 NST
Rule Neth 1924 only - Mar 30 2:00s 1:00 NST
# Whitman gives 1925 Apr 5; go with Shanks.
Rule Neth 1925 only - Jun 5 2:00s 1:00 NST
# For 1926 through 1930 Whitman gives Apr 15; go with Shanks.
Rule Neth 1926 1931 - May 15 2:00s 1:00 NST
Rule Neth 1932 only - May 22 2:00s 1:00 NST
Rule Neth 1933 1936 - May 15 2:00s 1:00 NST
Rule Neth 1937 only - May 22 2:00s 1:00 NST
# Whitman gives 1939 Apr 15 and 1940 Apr 19; go with Shanks.
Rule Neth 1938 1939 - May 15 2:00s 1:00 NST
Rule Neth 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Neth 1945 only - May 20 2:00s 0 -
# Before 1937, Shanks says just `0:20'; we use Whitman's more precise figure.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Amsterdam 0:19:28 - LMT 1892 May
0:19:28 Neth %s 1937 Jul
0:20 Neth %s 1940 May 16 0:40
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Neth MET%s 1977
1:00 EU MET%s
# ZONE-DESCR Europe Amsterdam Netherlands All points
# Norway
# 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 " DST"
Rule Norway 1916 only - Sep 30 0:00 0 -
# Shanks omits the following transition; go with Whitman.
Rule Norway 1935 only - Aug 11 0:00 1:00 " DST"
# Whitman says DST observed until 1942 Nov 1, then 1943 Mar 29 - Oct 4,
# 1944 Apr 3 - Oct 2, and 1945 Apr 1 - Oct 1; go with Shanks after 1940.
Rule Norway 1945 only - Apr 2 2:00s 1:00 " DST"
Rule Norway 1945 only - Oct 1 2:00s 0 -
Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 " DST"
Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
Rule Norway 1965 only - Apr 25 2:00s 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Oslo 0:43:00 - LMT 1895
1:00 Norway MET%s 1940 Aug 10 23:00
1:00 M-Eur MET%s 1945 Apr 2 2:00
1:00 Norway MET%s 1980
1:00 EU MET%s
# Svalbard is like Europe/Oslo.
#
# From Whitman:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Jan_Mayen -1:00 - EGT
# ZONE-DESCR Europe Oslo Norway All points except:
# ZONE-DESCR Atlantic Jan_Mayen Norway Jan Mayen Island
# Poland
# Austrian and German Poland switched from the Julian to the Gregorian calendar
# on 1582 Oct 15. Russian Poland switched on 1918 Jan 14.
# 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 " DST"
# Whitman gives 1944 Nov 30; go with Shanks.
Rule Poland 1944 only - Oct 4 2:00 0 -
# For 1944-1948 Whitman gives the previous day; go with Shanks.
Rule Poland 1945 only - Apr 29 0:00 1:00 " DST"
Rule Poland 1945 only - Nov 1 0:00 0 -
Rule Poland 1946 only - Apr 14 0:00 1:00 " DST"
Rule Poland 1946 only - Sep 7 0:00 0 -
Rule Poland 1947 only - May 4 0:00 1:00 " DST"
Rule Poland 1947 1948 - Oct Sun>=1 0:00 0 -
Rule Poland 1948 only - Apr 18 0:00 1:00 " DST"
# Whitman also gives 1949 Apr 9 - 1949 Oct 1; go with Shanks.
Rule Poland 1957 only - Jun 2 1:00s 1:00 " DST"
Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
Rule Poland 1958 only - Mar 30 1:00s 1:00 " DST"
Rule Poland 1959 only - May 31 1:00s 1:00 " DST"
Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
Rule Poland 1960 only - Apr 3 1:00s 1:00 " DST"
Rule Poland 1961 1964 - May Sun>=25 1:00s 1:00 " DST"
Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Warsaw 1:24:00 - LMT 1880
1:24 - WMT 1915 Aug 5 # Warsaw Mean Time
1:00 M-Eur MET%s 1918 Sep 16 3:00
2:00 Poland EET%s 1922 Jun
1:00 Poland MET%s 1940 Jun 23 2:00
1:00 M-Eur MET%s 1944 Oct
1:00 Poland MET%s 1977 Apr 3 1:00
1:00 W-Eur MET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Warsaw Poland All points
# Portugal
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Port 1916 only - Jun 17 23:00 1:00 " DST"
# Whitman gives 1916 Oct 31; go with Shanks.
Rule Port 1916 only - Nov 1 1:00 0 -
Rule Port 1917 only - Feb 28 23:00s 1:00 " DST"
Rule Port 1917 1921 - Oct 14 23:00s 0 -
Rule Port 1918 only - Mar 1 23:00s 1:00 " DST"
Rule Port 1919 only - Feb 28 23:00s 1:00 " DST"
Rule Port 1920 only - Feb 29 23:00s 1:00 " DST"
Rule Port 1921 only - Feb 28 23:00s 1:00 " DST"
Rule Port 1924 only - Apr 16 23:00s 1:00 " DST"
Rule Port 1924 only - Oct 14 23:00s 0 -
Rule Port 1926 only - Apr 17 23:00s 1:00 " DST"
Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 -
Rule Port 1927 only - Apr 9 23:00s 1:00 " DST"
Rule Port 1928 only - Apr 14 23:00s 1:00 " DST"
Rule Port 1929 only - Apr 20 23:00s 1:00 " DST"
Rule Port 1931 only - Apr 18 23:00s 1:00 " DST"
# Whitman gives 1931 Oct 8; go with Shanks.
Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
Rule Port 1932 only - Apr 2 23:00s 1:00 " DST"
# Shanks gives 1934 Apr 4; go with Whitman.
Rule Port 1934 only - Apr 7 23:00s 1:00 " DST"
# Whitman gives 1934 Oct 5; go with Shanks.
Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 -
# Shanks gives 1935 Apr 30; go with Whitman.
Rule Port 1935 only - Mar 30 23:00s 1:00 " DST"
Rule Port 1936 only - Apr 18 23:00s 1:00 " DST"
# Whitman gives 1937 Apr 2; go with Shanks.
Rule Port 1937 only - Apr 3 23:00s 1:00 " DST"
Rule Port 1938 only - Mar 26 23:00s 1:00 " DST"
Rule Port 1939 only - Apr 15 23:00s 1:00 " DST"
# Whitman gives 1939 Oct 7; go with Shanks.
Rule Port 1939 only - Nov 18 23:00s 0 -
Rule Port 1940 only - Feb 24 23:00s 1:00 " DST"
# Shanks gives 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 " DST"
Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 " DST"
Rule Port 1942 only - Apr 25 22:00s 2:00 " DDST"
Rule Port 1942 only - Aug 15 22:00s 1:00 " DST"
Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 -
Rule Port 1943 only - Apr 17 22:00s 2:00 " DDST"
Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 " DST"
Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 " DDST"
Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 " DST"
Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 " DST"
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.
Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 " DST"
Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 -
Rule Port 1977 only - Mar 27 0:00s 1:00 " DST"
Rule Port 1977 only - Sep 25 0:00s 0 -
Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 " DST"
Rule Port 1978 only - Oct 1 0:00s 0 -
Rule Port 1979 1982 - Sep lastSun 1:00s 0 -
Rule Port 1980 only - Mar lastSun 0:00s 1:00 " DST"
Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 " DST"
Rule Port 1983 only - Mar lastSun 2:00s 1:00 " DST"
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Lisbon -0:36:32 - LMT 1884
-0:37 - LMT 1911 May 24 # Lisbon Mean Time
0:00 Port WET%s 1966 Apr 3 2:00
1:00 - MET 1976 Sep 26 1:00
0:00 Port WET%s 1983 Sep 25 1:00s
0:00 EU WET%s 1992 Sep 27 1:00s
# From Rui Pedro Salgueiro <rps@inescca.inescc.pt> (November 12, 1992):
# Portugal has recently (September, 27) changed timezone
# (from WET to MET or CET) to harmonize with EEC.
1:00 EU MET%s 1996 Mar 31 1:00u
# Martin Bruckmann <martin@ua.pt> (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.
0:00 1:00 "WET DST" 1996 Oct 27 1:00u
0:00 EU WET%s
# We don't know what happened to Madeira or the Azores,
# so we'll just use Shanks for now.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
-1:55 - HMT 1911 May 24 # Horta Mean Time
-2:00 Port ACT%s 1966 Apr 3 2:00
-1:00 - ACT 1977 Mar 27
-1:00 - ACT 1983 Sep 25 1:00s
-1:00 W-Eur ACT%s
Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
-1:08 - FMT 1911 May 24 # Funchal Mean Time
-1:00 Port ACT%s 1966 Apr 3 2:00
0:00 - WET 1977 Mar 27
0:00 Port WET%s 1983 Sep 25 1:00s
0:00 EU WET%s
# ZONE-DESCR Europe Lisbon Portugal All points except:
# ZONE-DESCR Atlantic Azores Portugal Azores
# ZONE-DESCR Atlantic Madeira Portugal Madeira
# Romania
# Catholic Romania switched from the Julian to the Gregorian calendar on
# on 1919 Mar 18. Greek Orthodox Romania switched on 1920 Mar 18.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Romania 1932 only - May 21 0:00s 1:00 " DST"
Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 -
Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 " DST"
Rule Romania 1979 only - May 27 0:00 1:00 " DST"
Rule Romania 1979 only - Sep lastSun 0:00 0 -
Rule Romania 1980 only - Apr 5 23:00 1:00 " DST"
Rule Romania 1980 only - Sep lastSun 1:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
1:44 - BMT 1931 Jul 24 # Bucharest MT
2:00 Romania EET%s 1981 Mar 29 2:00s
2:00 M-Eur EET%s
# This may change to `EU' soon.
# ZONE-DESCR Europe Bucharest Romania All points
# Russia
# From Paul Eggert <eggert@twinsun.com> (May 28, 1994):
# Moscow and Novosibirsk time zone names, and Moscow rules after 1991,
# are from Andrew A. Chernov <ache@astral.msk.su>.
# I invented the other time zone names, and (unless otherwise specified)
# guessed what happened after 1991; the clocks were chaotic, and we know little.
# The rest is from Shanks.
#
# From Shanks (1991):
# Western Russia switched from the Julian to the Gregorian calendar
# on 1918 Jan 14. Eastern Russia switched on 1920 Mar 18.
# In 1929 the Soviet Union instituted a 5 day week; in 1932 it instituted
# a 6 day week; on 1940 Jun 27 it returned to the Gregorian week.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Moscow 2:30:20 - LMT 1880
2:31 Russia LST%s 1919 Jul 1 2:00
3:00 Russia MS%s 1922 Oct
2:00 - EET 1930 Jun 21
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
2:00 - EET 1992 Jan 19 2:00s
3:00 Russia MS%s
# ZONE-DESCR Europe Moscow Russia Moscow zone
Zone Europe/Kuybyshev 3:20:36 - LMT 1924 May 2
3:00 - KSK 1957 Mar
4:00 Russia KS%s 1991 Mar 31 2:00s
3:00 1:00 KSD 1991 Sep 29 2:00s
3:00 - KSK 1992 Jan 19 2:00s
4:00 Russia KS%s
# ZONE-DESCR Europe Kuybyshev Russia Kuybyshev zone
Zone Asia/Yekaterinburg 4:02:34 - LMT 1924 May 2
4:00 - SSK 1957 Mar
5:00 Russia SS%s 1991 Mar 31 2:00s
4:00 1:00 SSD 1991 Sep 29 2:00s
4:00 - SSK 1992 Jan 19 2:00s
5:00 Russia ES%s # name change from Sverdlovsk
# ZONE-DESCR Asia Yekaterinburg Russia Yekaterinburg zone
Zone Asia/Omsk 4:53:36 - LMT 1924 May 2
5:00 - OSK 1957 Mar
6:00 Russia OS%s 1991 Mar 31 2:00s
5:00 1:00 OSD 1991 Sep 29 2:00s
5:00 - OSK 1992 Jan 19 2:00s
6:00 Russia OS%s
# ZONE-DESCR Asia Omsk Russia Omsk zone
# From Stanislaw A. Kuzikowski <S.A.Kuz@iae.nsk.su> (June 29, 1994):
# 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.
Zone Asia/Novosibirsk 5:31:40 - LMT 1924 May 2
6:00 - NSK 1957 Mar
7:00 Russia NS%s 1991 Mar 31 2:00s
6:00 1:00 NSD 1991 Sep 29 2:00s
6:00 - NSK 1992 Jan 19 2:00s
7:00 Russia NS%s 1994 Mar 27 2:00s
6:00 1:00 NSD 1994 Sep 25 2:00s
6:00 Russia NS%s
# ZONE-DESCR Asia Novosibirsk Russia Novosibirsk zone
Zone Asia/Krasnoyarsk 6:11:20 - LMT 1924 May 2
6:00 - KRSK 1957 Mar
7:00 Russia KRS%s 1991 Mar 31 2:00s
6:00 1:00 KRSD 1991 Sep 29 2:00s
6:00 - KRSK 1992 Jan 19 2:00s
7:00 Russia KRS%s
# ZONE-DESCR Asia Krasnoyarsk Russia Krasnoyarsk zone
Zone Asia/Irkutsk 6:57:20 - LMT 1880
6:57 - LST 1924 May 2
7:00 - ISK 1957 Mar
8:00 Russia IS%s 1991 Mar 31 2:00s
7:00 1:00 ISD 1991 Sep 29 2:00s
7:00 - ISK 1992 Jan 19 2:00s
8:00 Russia IS%s
# ZONE-DESCR Asia Irkutsk Russia Irkutsk zone
Zone Asia/Yakutsk 8:38:40 - LMT 1924 May 2
8:00 - YSK 1957 Mar
9:00 Russia YS%s 1991 Mar 31 2:00s
8:00 1:00 YSD 1991 Sep 29 2:00s
8:00 - YSK 1992 Jan 19 2:00s
9:00 Russia YS%s
# ZONE-DESCR Asia Yakutsk Russia Yakutsk zone
Zone Asia/Vladivostok 8:47:44 - LMT 1880
8:48 - LST 1924 May 2
9:00 - VSK 1957 Mar
10:00 Russia VS%s 1991 Mar 31 2:00s
9:00 1:00 VSD 1991 Sep 29 2:00s
9:00 - VSK 1992 Jan 19 2:00s
10:00 Russia VS%s
# ZONE-DESCR Asia Vladivostok Russia Vladivostok zone
Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
10:00 - MSK 1957 Mar
11:00 Russia MS%s 1991 Mar 31 2:00s
10:00 1:00 MSD 1991 Sep 29 2:00s
10:00 - MSK 1992 Jan 19 2:00s
11:00 Russia MS%s
# ZONE-DESCR Asia Magadan Russia Magadan zone
# This name should be Asia/Petropavlovsk-Kamchatski, but that's too long.
Zone Asia/Kamchatka 10:34:36 - LMT 1924 May 2
11:00 - PSK 1957 Mar
12:00 Russia PS%s 1991 Mar 31 2:00s
11:00 1:00 PSD 1991 Sep 29 2:00s
11:00 - PSK 1992 Jan 19 2:00s
12:00 Russia PS%s
# ZONE-DESCR Asia Kamchatka Russia Kamchatka zone
Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
12:00 - ASK 1957 Mar
13:00 Russia AS%s 1991 Mar 31 2:00s
12:00 1:00 ASD 1991 Sep 29 2:00s
12:00 - ASK 1992 Jan 19 2:00s
13:00 Russia AS%s
# Slovakia
Link Europe/Prague Europe/Bratislava
# ZONE-DESCR Europe Bratislava Slovakia All points
# Slovenia
# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Ljubljana 0:58:04 - LMT 1884
1:00 - MET 1941 Apr 18 23:00
1:00 M-Eur MET%s 1945 May 8 2:00s
1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1:00 - MET 1983
1:00 EU MET%s
# ZONE-DESCR Europe Ljubljana Slovenia All points
# 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.
Rule Spain 1917 only - May 5 23:00s 1:00 " DST"
Rule Spain 1917 1919 - Oct 6 23:00s 0 -
Rule Spain 1918 only - Apr 15 23:00s 1:00 " DST"
Rule Spain 1919 only - Apr 5 23:00s 1:00 " DST"
# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks.
Rule Spain 1924 only - Apr 16 23:00s 1:00 " DST"
# Whitman gives 1924 Oct 14; go with Shanks.
Rule Spain 1924 only - Oct 4 23:00s 0 -
Rule Spain 1926 only - Apr 17 23:00s 1:00 " DST"
# Whitman says no DST in 1929; go with Shanks.
Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
Rule Spain 1927 only - Apr 9 23:00s 1:00 " DST"
Rule Spain 1928 only - Apr 14 23:00s 1:00 " DST"
Rule Spain 1929 only - Apr 20 23:00s 1:00 " DST"
# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13; go with Shanks.
Rule Spain 1937 only - May 22 23:00s 1:00 " DST"
Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
Rule Spain 1938 only - Mar 22 23:00s 1:00 " DST"
Rule Spain 1939 only - Apr 15 23:00s 1:00 " DST"
Rule Spain 1940 only - Mar 16 23:00s 1:00 " DST"
# Whitman says no DST 1942-1945; go with Shanks.
Rule Spain 1942 only - May 2 22:00s 2:00 " DDST"
Rule Spain 1942 only - Sep 1 22:00s 1:00 " DST"
Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 " DDST"
Rule Spain 1943 only - Oct 3 22:00s 1:00 " DST"
Rule Spain 1944 only - Oct 10 22:00s 1:00 " DST"
Rule Spain 1945 only - Sep 30 1:00 1:00 " DST"
Rule Spain 1946 only - Sep 30 0:00 0 -
Rule Spain 1949 only - Apr 30 23:00 1:00 " DST"
Rule Spain 1949 only - Sep 30 1:00 0 -
Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 " DST"
Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
Rule Spain 1976 only - Mar 27 23:00 1:00 " DST"
Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
Rule Spain 1977 1978 - Apr 2 23:00 1:00 " DST"
Rule Spain 1978 only - Oct 1 1:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Madrid -0:14:44 - LMT 1901
0:00 Spain WET%s 1946 Sep 30
1:00 Spain MET%s 1979
1:00 EU MET%s
Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
-1:00 - ACT 1946 Sep 30 1:00
0:00 - WET 1980 Apr 6 0:00s
0:00 1:00 "WET DST" 1980 Sep 28 0:00s
0:00 EU WET%s
# ZONE-DESCR Europe Madrid Spain All points except:
# ZONE-DESCR Atlantic Canary Spain Canary Islands
# Sweden
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Stockholm 1:12:12 - LMT 1878 May 31
1:12 - SMT 1900 Jan 1 1:00 # Stockholm MT
1:00 - MET 1916 Apr 14 23:00s
1:00 1:00 "MET DST" 1916 Sep 30 23:00s
1:00 - MET 1980
1:00 EU MET%s
# ZONE-DESCR Europe Stockholm Sweden All points
# Switzerland
# From Howse (1988), p 82:
# By the end of the 18th century clocks and watches became commonplace
# and their performance improved enormously. Communities began to keep
# 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 " DST"
Rule Swiss 1940 only - Dec 31 0:00 0 -
# From Shanks (1991):
Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 " DST"
Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
0:30 - SST 1894 Jun # Swiss Standard Time
1:00 Swiss MET%s 1981
1:00 EU MET%s
# ZONE-DESCR Europe Zurich Switzerland All points
# Turkey
# European Turkey switched to the Gregorian calendar in 1908.
# Asian Turkey switched in 1914.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Turkey 1916 only - May 1 0:00 1:00 " DST"
Rule Turkey 1916 only - Oct 1 0:00 0 -
Rule Turkey 1920 only - Mar 28 0:00 1:00 " DST"
Rule Turkey 1920 only - Oct 25 0:00 0 -
Rule Turkey 1921 only - Apr 3 0:00 1:00 " DST"
Rule Turkey 1921 only - Oct 3 0:00 0 -
Rule Turkey 1922 only - Mar 26 0:00 1:00 " DST"
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.
Rule Turkey 1924 only - May 13 0:00 1:00 " DST"
Rule Turkey 1924 1925 - Oct 1 0:00 0 -
Rule Turkey 1925 only - May 1 0:00 1:00 " DST"
# Shanks omits the first two transitions in 1940; go with Whitman.
Rule Turkey 1940 only - Jun 30 0:00 1:00 " DST"
Rule Turkey 1940 only - Oct 5 0:00 0 -
Rule Turkey 1940 only - Dec 1 0:00 1:00 " DST"
Rule Turkey 1941 only - Sep 21 0:00 0 -
Rule Turkey 1942 only - Apr 1 0:00 1:00 " DST"
# Whitman omits the next two transition and gives 1945 Oct 1; go with Shanks.
Rule Turkey 1942 only - Nov 1 0:00 0 -
Rule Turkey 1945 only - Apr 2 0:00 1:00 " DST"
Rule Turkey 1945 only - Oct 8 0:00 0 -
Rule Turkey 1946 only - Jun 1 0:00 1:00 " DST"
Rule Turkey 1946 only - Oct 1 0:00 0 -
Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 " DST"
Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 -
Rule Turkey 1949 only - Apr 10 0:00 1:00 " DST"
Rule Turkey 1950 only - Apr 19 0:00 1:00 " DST"
Rule Turkey 1951 only - Apr 22 0:00 1:00 " DST"
Rule Turkey 1951 only - Oct 8 0:00 0 -
Rule Turkey 1962 only - Jul 15 0:00 1:00 " DST"
Rule Turkey 1962 only - Oct 8 0:00 0 -
Rule Turkey 1964 only - May 15 0:00 1:00 " DST"
Rule Turkey 1964 only - Oct 1 0:00 0 -
Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 " DST"
Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 -
Rule Turkey 1973 only - Jun 3 1:00 1:00 " DST"
Rule Turkey 1973 only - Nov 4 3:00 0 -
Rule Turkey 1974 only - Mar 31 2:00 1:00 " DST"
Rule Turkey 1974 only - Nov 3 5:00 0 -
Rule Turkey 1975 only - Mar 30 0:00 1:00 " DST"
Rule Turkey 1975 1976 - Oct lastSun 0:00 0 -
Rule Turkey 1976 only - Jun 1 0:00 1:00 " DST"
Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 " DST"
Rule Turkey 1977 only - Oct 16 0:00 0 -
Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 " DST"
Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 -
Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 " DST"
Rule Turkey 1983 only - Jul 31 0:00 1:00 " DST"
Rule Turkey 1983 only - Oct 2 0:00 0 -
Rule Turkey 1985 only - Apr 20 0:00 1:00 " DST"
Rule Turkey 1985 only - Sep 28 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Istanbul 1:55:52 - LMT 1880
1:57 - OMT 1910 Oct # Ottoman Mean Time
2:00 Turkey EET%s 1978 Oct 15
3:00 Turkey TUR%s 1985 Apr 20
2:00 Turkey EET%s 1986
2:00 M-Eur EET%s
# This may change to `EU' soon.
Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
# ZONE-DESCR Europe Istanbul Turkey All points
# Ukraine
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Ukraine 1919 only - Jul 1 2:00 1:00 " DST"
Rule Ukraine 1919 only - Aug 16 0:00 0 -
Rule Ukraine 1921 only - Feb 14 23:00 1:00 " DST"
Rule Ukraine 1921 only - Mar 21 23:00 2:00 " DDST"
Rule Ukraine 1921 only - Sep 1 0:00 1:00 " DST"
Rule Ukraine 1921 only - Oct 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Kiev 2:02:04 - LMT 1880
2:02 Russia LST%s 1919 Jul 1 2:00
2:02 Ukraine LST%s 1924 May 2
2:00 - EET 1930 Jun 21
3:00 Russia MS%s 1990 Jul 17
2:00 M-Eur EET%s
# This may change to `EU' soon.
Zone Europe/Simferopol 2:16:24 - LMT 1880
2:08 Russia LST%s 1919 Jul 1 2:00
2:08 Ukraine LST%s 1924 May 2
2:00 - EET 1930 Jun 21
3:00 Russia MS%s 1991 Mar 31 2:00s
2:00 1:00 "EET DST" 1991 Sep 29 2:00s
# From Paul Eggert <eggert@twinsun.com> (May 28, 1994):
# Today's _Economist_ (p 45) reports that Crimea switched
# from Kiev to Moscow time sometime after the January elections.
# For now, we'll guess that there was a 2-hour leap forward on March 27.
2:00 M-Eur EET%s 1994 Mar 27 2:00s
3:00 Russia MS%s
# ZONE-DESCR Europe Kiev Ukraine All points except:
# ZONE-DESCR Europe Simferopol Ukraine Crimea
# Yugoslavia
# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Belgrade 1:22:00 - LMT 1884
1:00 - MET 1941 Apr 18 23:00
1:00 M-Eur MET%s 1945 May 8 2:00s
1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1:00 - MET 1983
1:00 EU MET%s
# ZONE-DESCR Europe Belgrade Serbia All points
###############################################################################
# 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)
# ...
# Date: Wed, 28 Jan 87 16:56:27 -0100
# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
# Message-Id: <8701281556.AA22174@cgcha.uucp>
# ...
#
# ...the European time rules are...standardized since 1981, when
# most European coun[tr]ies 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)
# ...
#
# 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 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 Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch
# dates...
#
# 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...
# 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
# From Bob Devine (January 28, 1988):
# ...
# Greece: Last Sunday in April to last Sunday in September (iffy on dates).
# Since 1978. Change at midnight.
# ...
# Monaco: has same DST as France.
# ...
# ...
# Date: Fri, 3 Sep 93 13:43:41 BST
# From: Peter Ilieve <peter@memex.co.uk>
# ...
# Turning to Europe, I now have a copy of the `Sixth Council Directive 92/20/EEC
# of 26 March 1992 on summertime arrangements'. This only covers 1993 and
# 1994, a seventh one is in the works but I doubt that the algorithm will
# change. This says summertime starts at 01:00 GMT on the last Sunday in March
# and ends at 01:00 GMT on the last Sunday in September, except for the UK
# and Eire where it ends at 01:00 GMT on the fourth Sunday in October.
# It says the arrangements for 1995 onwards will be decided by 1 January 1994,
# but as the sixth directive was supposed to appear by 1 Jan 92 and didn't
# arrive til March I wouldn't hold your breath.
#
# The first summertime directive was adopted in 1980, although the UK didn't
# seem to use it until 1981. I suspect it would be safe to move your start
# dates for the -Eur rules back to 1981.
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