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+# @(#)europe 7.52
+
+# 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> (1996-11-22):
+# 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).
+#
+# Gwillim Law <LAW@encmail.encompass.com> writes that a good source
+# for recent time zone data is the International Air Transport
+# Association's Standard Schedules Information Manual (IATA SSIM),
+# published semiannually. Law sent in several helpful summaries
+# of the IATA's data after 1990.
+#
+# Except where otherwise noted, Shanks is the source for entries through 1990,
+# and IATA SSIM is the source for entries after 1990.
+#
+# 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.
+# Corrections are welcome!
+# std dst
+# LMT Local Mean Time
+# -4:00 AST Atlantic
+# -3:00 WGT WGST Western Greenland*
+# -1:00 EGT EGST Eastern Greenland*
+# 0:00 GMT BST Greenwich, British Summer
+# 0:00 GMT IST Greenwich, Irish Summer
+# 0:00 WET WEST Western Europe
+# 1:00 CET CEST Central Europe
+# 2:00 EET EEST Eastern Europe
+# 3:00 MSK MSD Moscow
+#
+# 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 Peter Ilieve <peter@memex.co.uk> (1994-12-04),
+# The original six [EU members]: Belgium, France, (West) Germany, Italy,
+# Luxembourg, the Netherlands.
+# Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
+# 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
+# The UK and its colonies adopted the Gregorian calendar on 1752-09-14.
+
+# From Peter Ilieve <peter@memex.co.uk> (1994-07-06):
+#
+# On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about
+# historical vistas along the Thames in west London. There was a photo
+# 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 longitude
+# 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 longitude 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> (1993-11-18):
+#
+# Howse writes that Britain was the first country to use standard time.
+# The railways cared most about the inconsistencies of local mean time,
+# 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 Paul Eggert (1996-09-03):
+# The OED Supplement says that the English originally said ``Daylight Saving''
+# when they were debating the adoption of DST in 1908; but by 1916 this
+# term appears only in quotes taken from DST's opponents, whereas the
+# proponents (who eventually won the argument) are quoted as using ``Summer''.
+
+# From Arthur David Olson (1989-01-19):
+#
+# 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 Chris Carrier <72157.3334@CompuServe.COM> (1996-06-14):
+# I remember reading in various wartime issues of the London Times the
+# acronym BDST for British Double Summer Time. Look for the published
+# time of sunrise and sunset in The Times, when BDST was in effect, and
+# if you find a zone reference it will say, "All times B.D.S.T."
+
+# From Peter Ilieve <peter@aldie.co.uk> (1998-01-12):
+# The following list attempts to show the complete history of Summer Time
+# legislation in the United Kingdom, and has quite a bit to say about
+# the Isle of Man and the Channel Islands as well.
+#
+# Things that I have not personally seen are marked (???). Things that
+# I haven't seen but Joseph Myers has are marked (jsm). The problem
+# with finding old Orders (rather than Acts) is that nobody seems to
+# keep the actual documents themselves, not even the Government. They
+# get bound into annual volumes, which are published, but by the time
+# this happens the Orders are mainly spent as the years they refer
+# to have come and gone, so they don't get included in the annual
+# volumes.
+#
+# Thanks are due to my learned legal friend Lorna Montgomerie, who dug out
+# the dusty old statutes, 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),
+# and to Joseph Myers <jsm28@cam.ac.uk>, who tracked down the Orders
+# up to 1945, some of the old Acts, and the first five EC Directives.
+#
+# Some definitions:
+#
+# Great Britain: England, Scotland and Wales
+# United Kingdom: Great Britain plus Ireland (up to 1922) or Northern
+# Ireland (since 1922)
+# S.I.: Statutory Instrument, the modern name for secondary legislation
+# S.R.&O.: Statutory Rules and Orders, the older name for secondary legislation
+#
+# Unless otherwise specified, Acts and secondary legislation are assumed
+# to apply throughout the United Kingdom, but not to the Isle of Man
+# or the Channel Islands.
+#
+# Some of the Acts and Orders I found in various libraries, and I don't
+# have copies. When I looked at them I was looking for dates and not things
+# like whether they applied to the Bailiwick of Jersey. I will try to
+# check these documents again.
+#
+# ---
+#
+# - The Statutes (Definition of Time) Act, 1880 (43 & 44 Vict. c. 9)
+#
+# Defined Greenwich mean time to be the standard time in Great Britain
+# and Dublin mean time to be the standard time in Ireland, superseding
+# various forms of local mean time.
+#
+# - The Statutory Time Act, 1883 (???)
+#
+# An Act of Tynwald, the Isle of Man Parliament. It appears to have
+# defined the standard time on the Isle of Man as GMT but as I haven't
+# seen it I don't know if it used Greenwich mean time, some other definition,
+# or just said that Isle of Man time would be the same as in Great Britain.
+#
+# - The Isle of Man (War Legislation) Act, 1914 (4 & 5 Geo. 5. c. 62) (???)
+#
+# Gives the power, by Order in Council, to extend wartime legislation
+# to the Isle of Man.
+#
+# - The Summer Time Act, 1916 (6 & 7 Geo. 5. c. 14)
+#
+# Introduced Summer Time for the first time, in Great Britain and Ireland.
+# Specified a one hour offset from GMT (DMT in Ireland), dates of
+# Sunday 21 May and Sunday 1 October and times of 02:00 (GMT/DMT).
+# Gave a power to make Orders in subsequent years, for the duration
+# of the then current war.
+#
+# - The Time (Ireland) Act, 1916 (6 & 7 Geo. 5. c. 45)
+#
+# This abolished Dublin mean time at 02:00 DMT on Sunday 1 October 1916,
+# bringing the whole of the United Kingdom onto GMT. As Ireland was behind
+# GMT/BST at 02:00 DMT on 1 Oct Great Britain had already put the clocks back.
+# Using Paul Eggert's suggestion of IST for Irish Summer Time and the figure
+# derived from Whitman for the offset of IST from GMT (00:34:39) the sequence
+# would have been:
+# Dublin London
+# 02:34:38 IST 02:59:59 BST
+# 02:34:39 IST 02:00:00 GMT
+# 02:59:59 IST 02:25:20 GMT
+# 02:25:21 GMT 02:25:21 GMT
+# with the transition 03:00:00 IST -> 02:00:00 DMT -> 02:25:21 GMT all at once.
+#
+# - S.R.&O. 1916, No. 382
+#
+# An Order made under the Isle of Man (War Legislation) Act, 1914
+# extending the Summer Time Act, 1916 to the Isle of Man. Dated
+# 23 May 1916, two days after the start of Summer Time, but it says that
+# the Act is deemed to have taken effect in the Isle of Man at the same
+# time as it took effect in the United Kingdom.
+#
+# - S.R.&O. 1917, No. 362
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1917 of Sunday 8 April to Monday 17 September,
+# both at 02:00 GMT. Note that Summer Time ends on a Monday.
+#
+# - S.R.&O. 1917, No. 358
+#
+# An Order made under the Summer Time (Isle of Man) Act, 1916
+# (the thing created by S.R.&O. 1916, No. 382) specifying the same
+# dates of 8 April to 17 September, at 02:00 GMT for the Isle of Man.
+#
+# - S.R.&O. 1918, No. 274
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1918 of Sunday 24 March to Monday 30 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1918, No. 429
+#
+# The matching Isle of Man Order for 1918 with the same dates and times.
+#
+# - S.R.&O. 1919, No. 297
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1919 of Sunday 30 March to Monday 29 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1919, No. 366
+#
+# The matching Isle of Man Order for 1919 with the same dates and times.
+#
+# - S.R.&O. 1920, No. 458
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1920 of Sunday 28 March to Monday 27 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1920, No. 573
+#
+# The matching Isle of Man Order for 1920 with the same dates and times.
+#
+# - S.R.&O. 1920, No. 1844
+#
+# An Order modifying both S.R.&O. 1920, No. 458 and S.R.&O. 1920, No. 573 to
+# change the end date for Summer Time from Monday 27 September to
+# Monday 25 October (the time remaining 02:00 GMT). The 1989 Green
+# Paper (Cm 722) says this was done because of a coal strike.
+#
+# - The War Emergency Laws (Continuance) Act, 1920 (10 & 11 Geo. 5. c. 5) (???)
+#
+# This extends the power to make Orders under the Summer Time Act, 1916
+# for a period of 12 months after the termination of the war.
+# I haven't seen this one so I don't know when it came into force, or
+# when the law deemed the termination of the war to have been.
+#
+# - S.R.&O. 1921, No. 363
+#
+# An Order made under the Summer Time Act, 1916 and the War
+# Emergency Laws (Continuance) Act, 1920 giving dates for Summer Time
+# in 1921 of Sunday 3 April to Monday 3 October, both at 02:00 GMT.
+#
+# - S.R.&O. 1921, No. 364
+#
+# The matching Isle of Man Order for 1921 with the same dates and times.
+#
+# - S.R.&O. 1922, No. 264 (???)
+#
+# This probably defines Summer Time for 1922 as the Summer Time Act, 1922
+# was passed after the start date. Dates from Cm 722:
+# 1922: 26 March to 8 October
+#
+# - S.R.&O. 1922, No. 290 (???)
+#
+# This is probably the matching Isle of Man Order.
+#
+# - The Summer Time Act, 1922 (12 & 13 Geo. 5. c. 22)
+#
+# 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 applied to the Isle of Man and the Channel Islands as well.
+# Came into Force on 20 July 1920. Note the reversion to ending on a Sunday.
+#
+# - S.R.&O. 1922, No. 1205
+#
+# An Order made under the War Emergency Laws (Continuance) Act, 1920
+# dated 13 October 1922. It revokes (among other things) the Order extending
+# the Summer Time Act, 1916 to the Isle of Man.
+#
+# - The Expiring Laws Continuance Act, 1923 (13 & 14 Geo. 5. c. 37) (jsm)
+#
+# This extended the Summer Time Act, 1922 (among other things) until
+# 31 December 1924.
+#
+# - The Expiring Laws Continuance Act, 1924 (15 Geo. 5. c. 1) (jsm)
+#
+# This further extended the Summer Time Act, 1922 (among other things) until
+# 31 December 1925.
+#
+# - The Time Act (Northern Ireland), 1924 (14 & 15 Geo. 5. c. 24 (N.I.))
+#
+# This Act says that while it remains in force, any Act or Order relating
+# to the time for general purposes in Great Britain shall also apply
+# in Northern Ireland, and the Time (Ireland) Act, 1916 shall have effect
+# accordingly.
+#
+# - The Summer Time Act, 1925 (15 & 16 Geo. 5. c. 64)
+#
+# This makes the 1922 Act permanent, with a change to the end date to the
+# day after the first Saturday in October. Came into force on 7 August 1925.
+#
+# - The Emergency Powers (Defence) Act, 1939 (2 & 3 Geo. 6. c. 62) (???)
+#
+# I haven't seen this one. It presumably gave the Government powers to
+# do all manner of things during the newly started war.
+#
+# - The Defence (Summer Time) Regulations, 1939, S.R.&O. 1939, No. 1379
+#
+# These were made under the Emergency Powers (Defence) Act, 1939.
+# They change the end date to be the day after the third Saturday in November.
+#
+# - S.R.&O. 1940, No. 1883
+#
+# An Order in Council amending the Defence (Summer Time) Regulations, 1939.
+# This continues summer time throughout the year after it starts in 1940.
+# There was another Order (S.R.&O. 1940, No. 172) that I assume had merely
+# changed the dates, to start on 4 February, and was then superseded by this
+# one. I haven't seen No. 172 so I don't know what end date it would have
+# specified. The dates from Cm 722:
+# 1940: Summer Time starts on 4 February
+#
+# - S.R.&O. 1941, No. 476
+#
+# Another Order amending the Defence (Summer Time) Regulations, 1939.
+# 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.
+#
+# - S.R.&O. 1942, No. 506
+#
+# Another Order amending the Defence (Summer Time) Regulations, 1939.
+# This changes the start date of Double Summer Time to the day after the first
+# Saturday in April, bringing it forward from May.
+#
+# - S.R.&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.)
+#
+# - S.R.&O. 1945, No. 312 (???)
+#
+# Probably defines the dates of Double Summer Time in 1945.
+# I do have this quote from Hansard (the official record of the United Kingdom
+# 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.'
+#
+# Cm 722 gives dates of:
+# 1945: Double Summer time: 2 April to 15 July
+# 1945: Summer Time ends on 7 October
+#
+# - S.R.&O. 1945, No. 1208
+#
+# An Order under the Emergency Powers (Defence) Acts, 1939 and 1940 revoking
+# a long list of things, including the Defence (Summer Time) Regulations, 1939.
+# This meant that Summer Time reverted to being set by the 1922 and 1925 Acts.
+#
+# - The Summer Time Act, 1947 (10 & 11 Geo. 6. c. 16)
+#
+# Came into force on 11 March 1947. Amended the Summer Time Acts, 1922 and
+# 1925 to change the dates of Summer Time and to introduce Double Summer Time
+# (although it doesn't give this, or any, name for this period of 2 hour
+# offset from GMT). Dates are given for 1947 only and are: 02:00 GMT Sunday
+# 16 March, 01:00 GMT Sunday 13 April, 01:00 GMT Sunday 10 August, and 02:00
+# Sunday 2 November. It gave a power to make Orders for subsequent years,
+# both to vary the dates and to continue Double Summer Time. It applied
+# to the Isle of Man and the Channel Islands.
+#
+# - Summer Time Order, 1948 (S.I. 1948/495) (???)
+# - Summer Time Order, 1949 (S.I. 1949/373) (???)
+# - Summer Time Order, 1950 (S.I. 1950/518) (???)
+# - Summer Time Order, 1951 (S.I. 1951/430) (???)
+# - Summer Time Order, 1952 (S.I. 1952/451) (???)
+#
+# These presumably give the dates of Summer Time for the relevent years.
+# There was no Double Summer Time. The dates given in the 1989 Green Paper
+# for these years are:
+# 1948: 14 March to 31 October
+# 1949: 3 April to 30 October
+# 1950: 16 April to 22 October
+# 1951: 15 April to 21 October
+# 1952: 20 April to 26 October
+# After 1952 things revert back to the 1922 and 1925 Acts.
+#
+# - The Interpretation Act (Northern Ireland), 1954 (1954 c. 33 (N.I.)) (???)
+#
+# I presume that section 39 of this Act is similar to section 9 of the
+# Interpretation Act, 1978 (listed below) in specifying GMT as the
+# legal time in Northern Ireland, replacing the Time (Ireland) Act, 1916.
+#
+# - Summer Time Order, 1961 (S.I. 1961/71)
+#
+# Specified dates of 26 March and 29 October (02:00 GMT) for 1961
+#
+# - Summer Time (1962) Order, 1961 (S.I. 1961/2465)
+#
+# Specified dates of 25 March to 28 October (02:00 GMT) for 1962.
+#
+# - Summer Time Order, 1963 (S.I. 1963/81)
+#
+# Specified dates of 31 March to 27 October (02:00 GMT) for 1963.
+#
+# - Summer Time (1964) Order, 1963 (S.I. 1963/2101)
+#
+# Specified dates of 22 March to 25 October (02:00 GMT) for 1964.
+#
+# - Summer Time Order, 1964 (S.I. 1964/1201)
+#
+# Specified dates for three years (all 02:00 GMT):
+# 1965: 21 March to 24 October
+# 1966: 20 March to 23 October
+# 1967: 19 March to 29 October
+#
+# - Summer Time Order, 1967 (S.I. 1967/1148)
+# - Summer Time Order, 1968 (S.I. 1968/117)
+#
+# The first of these specifies dates for 1968 of 18 February for the United
+# Kingdom but 7 April for the Isle of Man, both ending on 27 October,
+# all at 02:00 GMT. The second Order changes the Isle of Man start date
+# to 18 February to match the United Kingdom.
+#
+# - The British Standard Time Act 1968 (1968 c. 45)
+#
+# This came into force on 27 October 1968 and continued summer time throughout
+# the year. It expired at 02:00 GMT on 31 October 1971, as specified in the
+# Act, as Parliament did not move to make this experment permanent.
+# It applied to the Isle of Man and the Channel Islands.
+#
+# 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.
+#
+# - 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 (1972 c. 6)
+#
+# 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 gives the power to make Orders to vary these dates and
+# times. This Act is still in force and is the legal authority for
+# implementing the EC Directives in the United Kingdom.
+#
+# - The Interpretation Act 1978 (1978 c. 30)
+#
+# Section 9 of this Act replaces section 1 of the Statutes (Definition of
+# Time) Act, 1880 with very similar wording maintaining GMT as the legal
+# time in Great Britain. This does not apply in Northern Ireland (it
+# has its own Interpretation Act listed above).
+#
+# - Council Directive of 22 July 1980 on summertime arrangements (80/737/EEC)
+#
+# The first of the European Directives on Summer Time. It specified start
+# dates for 1981 and 1982. No agreement had been reached on end dates.
+# Only dates were given, there was no rule like `last Sunday in March'.
+# The main change for the United Kingdom was a move to a 01:00 GMT change
+# time. The dates:
+# 1981: 29 March
+# 1982: 28 March
+#
+# - Summer Time Order, 1980 (S.I. 1980/1089)
+#
+# Specified dates for 1981 and 1982, with the start dates as in the
+# EC Directive and all times 01:00 GMT:
+# 1981: 29 March to 25 October
+# 1982: 28 March to 24 October
+#
+# - Second Council Directive of 10 June 1982 on summertime arrangements
+# (82/399/EEC)
+#
+# The next European Directive. Specified dates for three years, 1983 to 1985.
+# Agreement still hadn't been reached on a common end date, and wouldn't
+# be until 1994 with the appeareance of the seventh Directive with a common
+# date for 1996 and beyond, but this time the Directive gave two sets of
+# end dates. The start date was specified by rule: the last Sunday in March.
+# All times were 01:00 GMT. The end dates were given without rule, as:
+# 1983: 25 September or 23 October
+# 1984: 30 September or 28 october
+# 1985: 29 September or 27 October
+#
+# - Summer Time Order, 1982 (S.I. 1982/1673)
+#
+# Implemented the second EC Directive, using the October end dates.
+# 1983: 27 March to 23 October
+# 1984: 25 March to 28 october
+# 1985: 31 March to 27 October
+#
+# - Third Council Directive of 12 December 1984 on summertime arrangements
+# (84/634/EEC)
+#
+# Specified start dates of the last Sunday in March and two sets of end
+# dates, last Sunday in September and fourth Sunday in October, all at
+# 01:00 GMT. The end dates were also specified as dates:
+# 1986: 28 September or 26 October
+# 1987: 27 September or 25 October
+# 1988: 25 September or 23 October
+#
+# - Summer Time Order, 1986 (S.I. 1986/223)
+#
+# Implemented the third EC Directive, using the October end dates.
+# 1986: 30 March to 26 October
+# 1987: 29 March to 25 October
+# 1988: 27 March to 23 October
+#
+# - Council Directive of 20 December 1985 amending Directive 84/634/EEC
+# on summertime arrangements (85/582/EEC)
+#
+# This was to do with the accession of Spain and Portugal to the EEC.
+# The previous directve had used wording like `Member States belonging
+# to the zero (Greenwich) time zone' when refering to the different
+# sets of end dates. Portugal was in that time zone but was not going
+# to follow the United Kingdom and Ireland dates, so the text was reworded
+# without any change to the dates themselves.
+#
+# - Fourth Council Directive of 22 December 1987 on summertime arrangements
+# (88/14/EEC)
+#
+# This Directive covered only a single year: 1989. My guess is that
+# this was because 1989 was one of the years when the historic United Kingdom
+# end date of the Sunday after the fourth Saturday in October differed from
+# the rule in the previous Directive of the fourth Sunday in October.
+# All times are 01:00 GMT. No rule was specified, specific dates were given:
+# 1989: 26 March to 24 September or 29 October
+#
+# - Summer Time Order, 1988 (S.I. 1988/931)
+#
+# Implemented the dates of 26 March to 29 October for 1989.
+#
+# - Fifth Council Directive of 21 December 1988 on summertime arrangements
+# (89/47/EEC)
+#
+# Covered the three years 1990 to 1992. All times are 01:00 GMT. Gave both
+# rules (last Sunday in March, last Sunday in September or fourth Sunday
+# in October) and specific dates:
+# 1990: 25 March to 30 September or 28 October
+# 1991: 31 March to 29 September or 27 October
+# 1992: 29 March to 27 September or 25 October
+#
+# - Summer Time Order, 1989 (S.I. 1989/985)
+#
+# Implemented the fifth Directive using the October end dates.
+#
+# - Sixth Council Directive 92/20/EEC of 26 March 1992 on summertime
+# arrangements
+#
+# Covered the two years 1993 and 1994. All times are 01:00 GMT. Specified
+# both rules (same as the fifth Directive) and specific dates:
+# 1993: 28 March to 26 September or 24 October
+# 1994: 27 March to 25 September or 23 October
+#
+# - Summer Time Order, 1992 (S.I. 1992/1729)
+#
+# Implemented the sixth Directive using the October end dates.
+#
+# - Seventh Directive 94/21/EC of the European Parliament and of the Council
+# of 30 May 1994 on summer-time arrangements
+#
+# Covered the three years 1995 to 1997. Agreement had finally been reached
+# on a common end date, to start in 1996. Both rules and dates were given.
+# The rules were the same last Sunday in March to last Sunday in September
+# or fourth Sunday in October for 1995, with the end rule changing to the
+# last Sunday in October for 1996 and 1997. The year 1995 was another of
+# the tricky ones where the EC and traditional United Kingdom rules differed
+# but this time the UK changed on the fourth Sunday, 22 October, earlier
+# than usual. All times are 01:00 GMT. Specific dates were also given:
+# 1995: 26 March to 24 September or 22 October
+# 1996: 31 March to 27 October
+# 1997: 30 March to 26 October
+#
+# - Summer Time Order 1994 (S.I. 1994/2798)
+#
+# Implements the seventh Directive using the October end date in 1995.
+# Applies also to the Bailiwick of Guernsey but not to the Bailiwick of
+# Jersey or the Isle of Man, which have their own (unspecified) legislation
+# on the subject.
+#
+# - Eighth Directive 97/44/EC of the European Parliament and of the Council
+# of 22 July 1997 on summer-time arrangements
+#
+# Covers four years: 1998 to 2001. All times are 01:00 GMT. Specifies both
+# rules, last Sunday in March and last Sunday in October, and specific dates:
+# 1998: 29 March to 25 October
+# 1999: 28 March to 31 October
+# 2000: 26 March to 29 October
+# 2001: 25 March to 28 October
+#
+# - Summer Time Order 1997 (S.I. 1997/2982)
+#
+# Implements the eighth Directive. Has the same text about the Isle of Man,
+# Guernsey and Jersey as the 1994 Order.
+
+# From Joseph S. Myers <jsm28@hermes.cam.ac.uk> (1998-01-06):
+#
+# The legal time in the UK outside of summer time is definitely GMT, not UTC;
+# see Lord Tanlaw's speech
+# <a href="http://www.parliament.the-stationery-office.co.uk/pa/ld199697/ldhansrd/pdvn/lds97/text/70611-20.htm#70611-20_head0">
+# (Lords Hansard 11 June 1997 columns 964 to 976)
+# </a>.
+
+# From Paul Eggert <eggert@twinsun.com> (1996-06-12):
+#
+# 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 saving 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 saving 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 saving 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
+# Summer Time Act, 1916
+Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST
+Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT
+# S.R.&O. 1917, No. 358
+Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST
+Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT
+# S.R.&O. 1918, No. 274
+Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST
+Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT
+# S.R.&O. 1919, No. 297
+Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST
+Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT
+# S.R.&O. 1920, No. 458
+Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST
+# S.R.&O. 1920, No. 1844
+Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT
+# S.R.&O. 1921, No. 363
+Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST
+Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT
+# S.R.&O. 1922, No. 264
+Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST
+# The Summer Time Act, 1922
+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 Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST
+# The Summer Time Act, 1925
+Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT
+Rule GB-Eire 1927 only - Apr Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1930 only - Apr Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1933 only - Apr Sun>=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 Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1938 only - Apr Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST
+# S.R.&O. 1939, No. 1379
+Rule GB-Eire 1939 only - Nov Sun>=16 2:00s 0 GMT
+# S.R.&O. 1940, No. 172 and No. 1883
+Rule GB-Eire 1940 only - Feb 25 2:00s 1:00 BST
+# S.R.&O. 1941, No. 476
+Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 BDST
+Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST
+# S.R.&O. 1942, No. 506
+Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 BDST
+# S.R.&O. 1944, No. 932
+Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST
+# S.R.&O. 1945, No. 312
+Rule GB-Eire 1945 only - Apr 2 1:00s 2:00 BDST
+# S.R.&O. 1945, No. 1208
+Rule GB-Eire 1945 only - Jul 15 1:00s 1:00 BST
+Rule GB-Eire 1945 1946 - Oct Sun>=2 2:00s 0 GMT
+Rule GB-Eire 1946 only - Apr Sun>=9 2:00s 1:00 BST
+# The Summer Time Act, 1947
+Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST
+Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 BDST
+Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST
+Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT
+# Summer Time Order, 1948 (S.I. 1948/495)
+Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST
+Rule GB-Eire 1948 1949 - Oct lastSun 2:00s 0 GMT
+# Summer Time Order, 1949 (S.I. 1949/373)
+Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST
+# Summer Time Order, 1950 (S.I. 1950/518)
+# Summer Time Order, 1951 (S.I. 1951/430)
+# Summer Time Order, 1952 (S.I. 1952/451)
+Rule GB-Eire 1950 1952 - Apr Sun>=14 2:00s 1:00 BST
+Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT
+# revert to the rules of the Summer Time Act, 1925
+Rule GB-Eire 1953 only - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1953 1960 - Oct Sun>=2 2:00s 0 GMT
+Rule GB-Eire 1954 only - Apr Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1957 only - Apr Sun>=9 2:00s 1:00 BST
+Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1960 only - Apr Sun>=9 2:00s 1:00 BST
+# Summer Time Order, 1961 (S.I. 1961/71)
+# Summer Time (1962) Order, 1961 (S.I. 1961/2465)
+# Summer Time Order, 1963 (S.I. 1963/81)
+Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST
+Rule GB-Eire 1961 1968 - Oct Sun>=23 2:00s 0 GMT
+# Summer Time (1964) Order, 1963 (S.I. 1963/2101)
+# Summer Time Order, 1964 (S.I. 1964/1201)
+# Summer Time Order, 1967 (S.I. 1967/1148)
+Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST
+# Summer Time Order, 1968 (S.I. 1968/117)
+Rule GB-Eire 1968 only - Feb 18 2:00s 1:00 BST
+# The British Standard Time Act, 1968
+# (no summer time)
+# The Summer Time Act, 1972
+Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST
+Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT
+# Summer Time Order, 1980 (S.I. 1980/1089)
+# Summer Time Order, 1982 (S.I. 1982/1673)
+# Summer Time Order, 1986 (S.I. 1986/223)
+# Summer Time Order, 1988 (S.I. 1988/931)
+Rule GB-Eire 1981 1995 - Mar lastSun 1:00u 1:00 BST
+Rule GB-Eire 1981 1989 - Oct Sun>=23 1:00u 0 GMT
+# Summer Time Order, 1989 (S.I. 1989/985)
+# Summer Time Order, 1992 (S.I. 1992/1729)
+# Summer Time Order 1994 (S.I. 1994/2798)
+Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT
+# Summer Time Order 1997 (S.I. 1997/2982)
+# 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 IST 1916 Oct 1 2:00s # Irish Summer Time
+ 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 IST 1916 Oct 1 2:00s
+ 0:00 GB-Eire %s 1921 Dec 6 # independence
+ 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
+
+###############################################################################
+
+# 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 S
+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 S
+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 S
+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 S
+Rule W-Eur 1996 max - Oct lastSun 1:00s 0 -
+
+# Older C-Eur rules are for convenience in the tables.
+# From 1977 on, C-Eur differs from EU only in that C-Eur uses standard time.
+Rule C-Eur 1916 only - Apr 30 23:00 1:00 S
+Rule C-Eur 1916 only - Oct 1 1:00 0 -
+Rule C-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 S
+Rule C-Eur 1917 1918 - Sep Mon>=15 2:00s 0 -
+Rule C-Eur 1940 only - Apr 1 2:00s 1:00 S
+Rule C-Eur 1942 only - Nov 2 2:00s 0 -
+Rule C-Eur 1943 only - Mar 29 2:00s 1:00 S
+Rule C-Eur 1943 only - Oct 4 2:00s 0 -
+Rule C-Eur 1944 only - Apr 3 2:00s 1:00 S
+# Whitman gives 1944 Oct 7; go with Shanks.
+Rule C-Eur 1944 only - Oct 2 2:00s 0 -
+Rule C-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 S
+Rule C-Eur 1977 only - Sep lastSun 2:00s 0 -
+Rule C-Eur 1978 only - Oct 1 2:00s 0 -
+Rule C-Eur 1979 1995 - Sep lastSun 2:00s 0 -
+Rule C-Eur 1981 max - Mar lastSun 2:00s 1:00 S
+Rule C-Eur 1996 max - Oct lastSun 2:00s 0 -
+
+# E-Eur differs from EU only in that E-Eur switches at midnight local time.
+Rule E-Eur 1977 1980 - Apr Sun>=1 0:00 1:00 S
+Rule E-Eur 1977 only - Sep lastSun 0:00 0 -
+Rule E-Eur 1978 only - Oct 1 0:00 0 -
+Rule E-Eur 1979 1995 - Sep lastSun 0:00 0 -
+Rule E-Eur 1981 max - Mar lastSun 0:00 1:00 S
+Rule E-Eur 1996 max - Oct lastSun 0:00 0 -
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Russia 1917 only - Jul 1 23:00 1:00 MST # Moscow Summer Time
+Rule Russia 1917 only - Dec 28 0:00 0 MMT # Moscow Mean Time
+Rule Russia 1918 only - May 31 22:00 2:00 MDST # Moscow Double Summer Time
+Rule Russia 1918 only - Sep 17 0:00 1:00 MST
+Rule Russia 1919 only - May 31 23:00 2:00 MDST
+Rule Russia 1919 only - Jul 1 2:00 1:00 S
+Rule Russia 1919 only - Aug 16 0:00 0 -
+Rule Russia 1921 only - Feb 14 23:00 1:00 S
+# Shanks gives 1921 Mar 21 for the following transition.
+# From Andrey A. Chernov <ache@astral.msk.su> (1993-11-12):
+# My sources says, that it is Mar 20, not 21.
+Rule Russia 1921 only - Mar 20 23:00 2:00 DS
+Rule Russia 1921 only - Sep 1 0:00 1:00 S
+Rule Russia 1921 only - Oct 1 0:00 0 -
+Rule Russia 1981 1984 - Apr 1 0:00 1:00 S
+Rule Russia 1981 1983 - Oct 1 0:00 0 -
+Rule Russia 1984 1991 - Sep lastSun 2:00s 0 -
+Rule Russia 1985 1991 - Mar lastSun 2:00s 1:00 S
+Rule Russia 1992 only - Mar lastSat 23:00 1:00 S
+Rule Russia 1992 only - Sep lastSat 23:00 0 -
+Rule Russia 1993 max - Mar lastSun 2:00s 1:00 S
+Rule Russia 1993 1995 - Sep lastSun 2:00s 0 -
+Rule Russia 1996 max - Oct lastSun 2:00s 0 -
+
+# These are for backward compatibility with older versions.
+
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone WET 0:00 EU WE%sT
+Zone CET 1:00 C-Eur CE%sT
+Zone MET 1:00 C-Eur ME%sT
+Zone EET 2:00 EU EE%sT
+
+# Previous editions of this database used abbreviations like MET DST
+# for Central European Summer Time, but this didn't agree with common usage.
+
+# From Markus Kuhn <mskuhn@unrza3.dialin.rrze.uni-erlangen.de> (1996-07-12):
+# The official German names ... are
+#
+# Mitteleuropaeische Zeit (MEZ) = UTC+01:00
+# Mitteleuropaeische Sommerzeit (MESZ) = UTC+02:00
+#
+# as defined in the German Time Act (Gesetz ueber die Zeitbestimmung (ZeitG),
+# 1978-07-25, Bundesgesetzblatt, Jahrgang 1978, Teil I, S. 1110-1111)....
+# I wrote ... to the German Federal Physical-Technical Institution
+#
+# Physikalisch-Technische Bundesanstalt (PTB)
+# Laboratorium 4.41 "Zeiteinheit"
+# Postfach 3345
+# D-38023 Braunschweig
+# phone: +49 531 592-0
+#
+# ... I received today an answer letter from Dr. Peter Hetzel, head of the PTB
+# department for time and frequency transmission. He explained that the
+# PTB translates MEZ and MESZ into English as
+#
+# Central European Time (CET) = UTC+01:00
+# Central European Summer Time (CEST) = UTC+02:00
+
+
+# Albania
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Albania 1940 only - Jun 16 0:00 1:00 S
+Rule Albania 1942 only - Nov 2 3:00 0 -
+Rule Albania 1943 only - Mar 29 2:00 1:00 S
+Rule Albania 1943 only - Apr 10 3:00 0 -
+Rule Albania 1974 only - May 4 0:00 1:00 S
+Rule Albania 1974 only - Oct 2 0:00 0 -
+Rule Albania 1975 only - May 1 0:00 1:00 S
+Rule Albania 1975 only - Oct 2 0:00 0 -
+Rule Albania 1976 only - May 2 0:00 1:00 S
+Rule Albania 1976 only - Oct 3 0:00 0 -
+Rule Albania 1977 only - May 8 0:00 1:00 S
+Rule Albania 1977 only - Oct 2 0:00 0 -
+Rule Albania 1978 only - May 6 0:00 1:00 S
+Rule Albania 1978 only - Oct 1 0:00 0 -
+Rule Albania 1979 only - May 5 0:00 1:00 S
+Rule Albania 1979 only - Sep 30 0:00 0 -
+Rule Albania 1980 only - May 3 0:00 1:00 S
+Rule Albania 1980 only - Oct 4 0:00 0 -
+Rule Albania 1981 only - Apr 26 0:00 1:00 S
+Rule Albania 1981 only - Sep 27 0:00 0 -
+Rule Albania 1982 only - May 2 0:00 1:00 S
+Rule Albania 1982 only - Oct 3 0:00 0 -
+Rule Albania 1983 only - Apr 18 0:00 1:00 S
+Rule Albania 1983 only - Oct 1 0:00 0 -
+Rule Albania 1984 only - Apr 1 0:00 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Tirane 1:19:20 - LMT 1914
+ 1:00 - CET 1940 Jun 16
+# The following transition is from Shanks's 4th edition (1995).
+ 1:00 Albania CE%sT 1984 Jul
+ 1:00 EU CE%sT
+
+# Andorra
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Andorra 0:06:04 - LMT 1901
+ 0:00 - WET 1946 Sep 30
+ 1:00 - CET 1985 Mar 31 2:00
+ 1:00 EU CE%sT
+
+# Austria
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Austria 1920 only - Apr 5 2:00s 1:00 S
+Rule Austria 1920 only - Sep 13 2:00s 0 -
+Rule Austria 1945 only - Apr 2 2:00s 1:00 S
+Rule Austria 1945 only - Nov 18 2:00s 0 -
+Rule Austria 1946 only - Apr 14 2:00s 1:00 S
+Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
+Rule Austria 1947 only - Apr 6 2:00s 1:00 S
+Rule Austria 1948 only - Apr 18 2:00s 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Vienna 1:05:20 - LMT 1893 Apr
+ 1:00 C-Eur CE%sT 1918 Jun 16 3:00
+ 1:00 Austria CE%sT 1940 Apr 1 2:00
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 Austria CE%sT 1981
+ 1:00 EU CE%sT
+
+# Belarus
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Minsk 1:50:16 - LMT 1880
+ 2:30:20 Russia %s 1919 Jul 1 2:00
+ 3:00 Russia MSK/MSD 1922 Oct
+ 2:00 - EET 1930 Jun 21
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 - EET 1992 Mar 29 0:00
+ 2:00 1:00 EEST 1992 Sep 27 0:00
+ 2:00 Russia EE%sT
+
+# Belgium
+#
+# From Paul Eggert (1997-07-02):
+# Entries from 1918 through 1991 are taken from:
+# Annuaire de L'Observatoire Royal de Belgique,
+# Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe annee, 1991
+# (Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC),
+# pp 8-9.
+# LMT before 1892 was 0:17:30, according to the official journal of Belgium:
+# Moniteur Belge, Samedi 30 Avril 1892, N.121.
+# Thanks to Pascal Delmoitie <pascal@belnet.be> for these references.
+# The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
+# Assume Brussels switched to WET in 1918 when the armistice took effect.
+#
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Belgium 1918 only - Mar 9 0:00s 1:00 S
+Rule Belgium 1918 1919 - Oct Sat>=1 23:00s 0 -
+Rule Belgium 1919 only - Mar 1 23:00s 1:00 S
+Rule Belgium 1920 only - Feb 14 23:00s 1:00 S
+Rule Belgium 1920 only - Oct 23 23:00s 0 -
+Rule Belgium 1921 only - Mar 14 23:00s 1:00 S
+Rule Belgium 1921 only - Oct 25 23:00s 0 -
+Rule Belgium 1922 only - Mar 25 23:00s 1:00 S
+Rule Belgium 1922 1927 - Oct Sat>=1 23:00s 0 -
+Rule Belgium 1923 only - Apr 21 23:00s 1:00 S
+Rule Belgium 1924 only - Mar 29 23:00s 1:00 S
+Rule Belgium 1925 only - Apr 4 23:00s 1:00 S
+Rule Belgium 1926 only - Apr 17 23:00s 1:00 S
+Rule Belgium 1927 only - Apr 9 23:00s 1:00 S
+Rule Belgium 1928 only - Apr 14 23:00s 1:00 S
+Rule Belgium 1928 1938 - Oct Sun>=2 2:00s 0 -
+Rule Belgium 1929 only - Apr 21 2:00s 1:00 S
+Rule Belgium 1930 only - Apr 13 2:00s 1:00 S
+Rule Belgium 1931 only - Apr 19 2:00s 1:00 S
+Rule Belgium 1932 only - Apr 3 2:00s 1:00 S
+Rule Belgium 1933 only - Mar 26 2:00s 1:00 S
+Rule Belgium 1934 only - Apr 8 2:00s 1:00 S
+Rule Belgium 1935 only - Mar 31 2:00s 1:00 S
+Rule Belgium 1936 only - Apr 19 2:00s 1:00 S
+Rule Belgium 1937 only - Apr 4 2:00s 1:00 S
+Rule Belgium 1938 only - Mar 27 2:00s 1:00 S
+Rule Belgium 1939 only - Apr 16 2:00s 1:00 S
+Rule Belgium 1939 only - Nov 19 2:00s 0 -
+Rule Belgium 1940 only - Feb 25 2:00s 1:00 S
+Rule Belgium 1944 only - Sep 17 2:00s 0 -
+Rule Belgium 1945 only - Apr 2 2:00s 1:00 S
+Rule Belgium 1945 only - Sep 16 2:00s 0 -
+Rule Belgium 1946 only - May 19 2:00s 1:00 S
+Rule Belgium 1946 only - Oct 7 2:00s 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Brussels 0:17:30 - LMT 1880
+ 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT
+ 0:00 - WET 1914 Nov 8
+ 1:00 - CET 1916 May 1 0:00
+ 1:00 C-Eur CE%sT 1918 Nov 11 11:00u
+ 0:00 Belgium WE%sT 1940 May 20 2:00s
+ 1:00 C-Eur CE%sT 1944 Sep 3
+ 1:00 Belgium CE%sT 1977
+ 1:00 EU CE%sT
+
+# Bosnia and Herzegovina
+# see Yugoslavia
+
+# Bulgaria
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Bulg 1979 only - Mar 31 23:00 1:00 S
+Rule Bulg 1979 only - Oct 1 1:00 0 -
+Rule Bulg 1980 1982 - Apr Sat<=7 23:00 1:00 S
+Rule Bulg 1980 only - Sep 29 1:00 0 -
+Rule Bulg 1981 only - Sep 27 2:00 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Sofia 1:33:16 - LMT 1880
+ 1:56:56 - IMT 1894 Nov 30 # Istanbul MT?
+ 2:00 - EET 1942 Nov 2 3:00
+ 1:00 C-Eur CE%sT 1945 Apr 2 3:00
+ 2:00 - EET 1979 Mar 31 23:00
+ 2:00 Bulg EE%sT 1982 Sep 26 2:00
+ 2:00 C-Eur EE%sT 1991
+ 2:00 E-Eur EE%sT
+
+# Croatia
+# see Yugosloavia
+
+# Czech Republic
+# Gregorian calendar adopted 1584-01-17.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Czech 1945 only - Apr 8 2:00s 1:00 S
+Rule Czech 1945 only - Nov 18 2:00s 0 -
+Rule Czech 1946 only - May 6 2:00s 1:00 S
+Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
+Rule Czech 1947 only - Apr 20 2:00s 1:00 S
+Rule Czech 1948 only - Apr 18 2:00s 1:00 S
+Rule Czech 1949 only - Apr 9 2:00s 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Prague 0:57:44 - LMT 1850
+ 0:57:44 - PMT 1891 Oct # Prague Mean Time
+ 1:00 C-Eur CE%sT 1944 Sep 17 2:00s
+ 1:00 Czech CE%sT 1979
+ 1:00 EU CE%sT
+
+# Denmark
+# Gregorian calendar adopted 1700-03-01.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Denmark 1916 only - May 14 23:00 1:00 S
+Rule Denmark 1916 only - Sep 30 23:00 0 -
+Rule Denmark 1940 only - May 15 0:00 1:00 S
+Rule Denmark 1945 only - Apr 2 2:00s 1:00 S
+Rule Denmark 1945 only - Aug 15 2:00s 0 -
+Rule Denmark 1946 only - May 1 2:00s 1:00 S
+Rule Denmark 1946 only - Sep 1 2:00s 0 -
+Rule Denmark 1947 only - May 4 2:00s 1:00 S
+Rule Denmark 1947 only - Aug 10 2:00s 0 -
+Rule Denmark 1948 only - May 9 2:00s 1:00 S
+Rule Denmark 1948 only - Aug 8 2:00s 0 -
+# Whitman also gives 1949 Apr 9 to 1949 Oct 1, and disagrees in minor ways
+# about many of the above dates; go with Shanks.
+#
+# For 1894, Shanks says Jan, Whitman Apr; go with Whitman.
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Copenhagen 0:50:20 - LMT 1890
+ 0:50:20 - CMT 1894 Apr # Copenhagen Mean Time
+ 1:00 Denmark CE%sT 1942 Nov 2 2:00s
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 Denmark CE%sT 1980
+ 1:00 EU CE%sT
+Zone Atlantic/Faeroe -0:27:04 - LMT 1908 Jan 11 # Torshavn
+ 0:00 - WET 1981
+ 0:00 EU WE%sT
+#
+# From Paul Eggert (1996-11-22):
+# Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
+# and left the EU on 1985-02-01. It therefore should have been using EU
+# rules at least through 1984. Shanks says Scoresbysund and Godthab
+# used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
+# rules since at least 1991. Assume EU rules since 1980.
+
+#
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Thule 1993 max - Apr Sun>=1 2:00 1:00 D
+Rule Thule 1993 max - Oct lastSun 2:00 0 S
+#
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Scoresbysund -1:29:00 - LMT 1916 Jul 28 # Ittoqqortoormit
+ -2:00 - CGT 1980 Apr 6 2:00
+ -2:00 C-Eur CG%sT 1981 Mar 29
+ -1:00 EU EG%sT
+Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk
+ -3:00 - WGT 1980 Apr 6 2:00
+ -3:00 EU WG%sT
+Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik
+ -4:00 Thule A%sT
+
+# Estonia
+# 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....
+#
+# From Peter Ilieve <peter@aldie.co.uk> (1996-10-28):
+# [IATA SSIM (1992/1996) claims that the Baltic republics switch at 01:00s,
+# but a relative confirms that Estonia still switches at 02:00s, writing:]
+# ``I do not [know] exactly but there are some little different
+# (confusing) rules for International Air and Railway Transport Schedules
+# conversion in Sunday connected with end of summer time in Estonia....
+# A discussion is running about the summer time efficiency and effect on
+# human physiology. It seems that Estonia maybe will not change to
+# summer time next spring.''
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Tallinn 1:39:00 - LMT 1880
+ 1:39:00 - TMT 1918 Feb # Tallinn Mean Time
+ 1:00 C-Eur CE%sT 1919 Jul
+ 1:39:00 - TMT 1921 May
+ 2:00 - EET 1940 Aug 6
+ 3:00 - MSK 1941 Sep 15
+ 1:00 C-Eur CE%sT 1944 Sep 22
+ 3:00 Russia MSK/MSD 1989 Mar 26 2:00s
+ 2:00 1:00 EEST 1989 Sep 24 2:00s
+ 2:00 C-Eur EE%sT
+
+# Finland
+# See Sweden for when the Gregorian calendar was adopted.
+#
+# 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 S
+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
+ 1:39:52 - HMT 1921 May # Helsinki Mean Time
+ 2:00 Finland EE%sT 1981 Mar 29 2:00
+ 2:00 EU EE%sT
+
+# France
+# Gregorian calendar adopted 1582-12-20.
+# French Revolutionary calendar used 1793-11-24 through 1805-12-31,
+# and (in Paris only) 1871-05-06 through 1871-05-23.
+#
+# 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 S
+Rule France 1916 1919 - Oct Sun>=1 23:00s 0 -
+Rule France 1917 only - Mar 24 23:00s 1:00 S
+Rule France 1918 only - Mar 9 23:00s 1:00 S
+Rule France 1919 only - Mar 1 23:00s 1:00 S
+Rule France 1920 only - Feb 14 23:00s 1:00 S
+Rule France 1920 only - Oct 23 23:00s 0 -
+Rule France 1921 only - Mar 14 23:00s 1:00 S
+Rule France 1921 only - Oct 25 23:00s 0 -
+Rule France 1922 only - Mar 25 23:00s 1:00 S
+Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
+Rule France 1923 only - May 26 23:00s 1:00 S
+Rule France 1924 only - Mar 29 23:00s 1:00 S
+Rule France 1925 only - Apr 4 23:00s 1:00 S
+Rule France 1926 only - Apr 17 23:00s 1:00 S
+Rule France 1927 only - Apr 9 23:00s 1:00 S
+Rule France 1928 only - Apr 14 23:00s 1:00 S
+Rule France 1929 only - Apr 20 23:00s 1:00 S
+Rule France 1930 only - Apr 12 23:00s 1:00 S
+Rule France 1931 only - Apr 18 23:00s 1:00 S
+Rule France 1932 only - Apr 2 23:00s 1:00 S
+Rule France 1933 only - Mar 25 23:00s 1:00 S
+Rule France 1934 only - Apr 7 23:00s 1:00 S
+Rule France 1935 only - Mar 30 23:00s 1:00 S
+Rule France 1936 only - Apr 18 23:00s 1:00 S
+Rule France 1937 only - Apr 3 23:00s 1:00 S
+Rule France 1938 only - Mar 26 23:00s 1:00 S
+Rule France 1939 only - Apr 15 23:00s 1:00 S
+Rule France 1939 only - Nov 18 23:00s 0 -
+Rule France 1940 only - Feb 25 2:00 1:00 S
+# The French rules for 1941-1944 were not used in Paris,
+# but were used in other places (e.g. Monaco).
+Rule France 1941 only - May 5 0:00 2:00 DS
+# Shanks says this transition occurred at Oct 6 1:00,
+# but go with Denis.Excoffier@ens.fr (1997-12-12),
+# who quotes the Ephemerides Astronomiques for 1998 from Bureau des Longitudes
+# as saying 5/10/41 22hUT.
+Rule France 1941 only - Oct 6 0:00 1:00 S
+Rule France 1942 only - Mar 9 0:00 2:00 DS
+Rule France 1942 only - Nov 2 3:00 1:00 S
+Rule France 1943 only - Mar 29 2:00 2:00 DS
+Rule France 1943 only - Oct 4 3:00 1:00 S
+Rule France 1944 only - Apr 3 2:00 2:00 DS
+Rule France 1944 only - Oct 8 1:00 1:00 S
+Rule France 1945 only - Apr 2 2:00 2:00 DS
+Rule France 1945 only - Sep 16 3:00 0 -
+# Shanks gives Mar 28 2:00 and Sep 26 3:00;
+# go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT.
+Rule France 1976 only - Mar 28 1:00 1:00 S
+Rule France 1976 only - Sep 26 1:00 0 -
+# Shanks gives 0:09 for Paris Mean Time, and Whitman gives 0:09:05,
+# 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
+# Shanks gives 1940 Jun 14 0:00; go with Excoffier's 14/6/40 22hUT.
+ 0:00 France WE%sT 1940 Jun 14 23:00
+ 1:00 C-Eur CE%sT 1944 Aug 25
+ 0:00 France WE%sT 1945 Sep 16 3:00
+ 1:00 France CE%sT 1977
+ 1:00 EU CE%sT
+
+# Germany
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Germany 1945 only - Apr 2 2:00s 1:00 S
+Rule Germany 1945 only - May 24 2:00 2:00 DS
+Rule Germany 1945 only - Sep 24 3:00 1:00 S
+Rule Germany 1945 only - Nov 18 2:00s 0 -
+Rule Germany 1946 only - Apr 14 2:00s 1:00 S
+# 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 S
+Rule Germany 1947 only - May 11 2:00s 2:00 DS
+Rule Germany 1947 only - Jun 29 3:00 1:00 S
+Rule Germany 1948 only - Apr 18 2:00s 1:00 S
+Rule Germany 1949 only - Apr 10 2:00s 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 Germany CE%sT 1980
+ 1:00 EU CE%sT
+
+# 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 - CET 1982
+ 1:00 EU CE%sT
+
+# Greece
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+# Whitman gives 1932 Jul 5 - Nov 1; go with Shanks.
+Rule Greece 1932 only - Jul 7 0:00 1:00 S
+Rule Greece 1932 only - Sep 1 0:00 0 -
+# Whitman gives 1941 Apr 25 - ?; go with Shanks.
+Rule Greece 1941 only - Apr 7 0:00 1:00 S
+# 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 S
+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 S
+Rule Greece 1952 only - Nov 2 0:00 0 -
+Rule Greece 1975 only - Apr 12 0:00s 1:00 S
+Rule Greece 1975 only - Nov 26 0:00s 0 -
+Rule Greece 1976 only - Apr 11 2:00s 1:00 S
+Rule Greece 1976 only - Oct 10 2:00s 0 -
+Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 S
+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 S
+Rule Greece 1979 only - Sep 29 2:00 0 -
+Rule Greece 1980 only - Apr 1 0:00 1:00 S
+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
+ 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT
+ 2:00 Greece EE%sT 1941 Apr 30
+ 1:00 Greece CE%sT 1944 Apr 4
+ 2:00 Greece EE%sT 1981
+ # Shanks says they switched to C-Eur in 1981;
+ # go with EU instead, since Greece joined it on Jan 1.
+ 2:00 EU EE%sT
+
+# Hungary
+# Gregorian calendar adopted 1587-11-01.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Hungary 1918 only - Apr 1 3:00 1:00 S
+Rule Hungary 1918 only - Sep 29 3:00 0 -
+Rule Hungary 1919 only - Apr 15 3:00 1:00 S
+Rule Hungary 1919 only - Sep 15 3:00 0 -
+Rule Hungary 1920 only - Apr 5 3:00 1:00 S
+Rule Hungary 1920 only - Sep 30 3:00 0 -
+Rule Hungary 1945 only - May 1 23:00 1:00 S
+Rule Hungary 1945 only - Nov 3 0:00 0 -
+Rule Hungary 1946 only - Mar 31 2:00s 1:00 S
+Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
+Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 S
+Rule Hungary 1950 only - Apr 17 2:00s 1:00 S
+Rule Hungary 1950 only - Oct 23 2:00s 0 -
+Rule Hungary 1954 1955 - May 23 0:00 1:00 S
+Rule Hungary 1954 1955 - Oct 3 0:00 0 -
+Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 S
+Rule Hungary 1956 only - Sep lastSun 0:00 0 -
+Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S
+Rule Hungary 1957 only - Sep lastSun 3:00 0 -
+Rule Hungary 1980 only - Apr 6 1:00 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
+ 1:00 C-Eur CE%sT 1918
+ 1:00 Hungary CE%sT 1941 Apr 6 2:00
+ 1:00 C-Eur CE%sT 1945 May 1 23:00
+ 1:00 Hungary CE%sT 1980 Sep 28 2:00s
+ 1:00 EU CE%sT
+
+# Iceland
+#
+# From Adam David <adam@veda.is> (1993-11-06):
+# The name of the timezone in Iceland for system / mail / news purposes is GMT.
+#
+# (1993-12-05):
+# 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.
+#
+# (1993-12-10):
+# 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 (???).
+#
+# From Paul Eggert <eggert@twinsun.com> (1993-12-09):
+# 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 S
+Rule Iceland 1917 only - Oct 21 1:00 0 -
+Rule Iceland 1918 only - Nov 16 1:00 0 -
+Rule Iceland 1939 only - Apr 29 23:00 1:00 S
+Rule Iceland 1939 only - Nov 29 2:00 0 -
+Rule Iceland 1940 only - Feb 25 2:00 1:00 S
+Rule Iceland 1940 only - Nov 3 2:00 0 -
+Rule Iceland 1941 only - Mar 2 1:00s 1:00 S
+Rule Iceland 1941 only - Nov 2 1:00s 0 -
+Rule Iceland 1942 only - Mar 8 1:00s 1:00 S
+Rule Iceland 1942 only - Oct 25 1:00s 0 -
+# 1943-1946 - first Sunday in March until first Sunday in winter
+Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 S
+Rule Iceland 1943 1948 - Oct Sun>=22 1:00s 0 -
+# 1947-1967 - first Sunday in April until first Sunday in winter
+Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 S
+# 1949 Oct transition delayed by 1 week
+Rule Iceland 1949 only - Oct 30 1:00s 0 -
+Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
+Rule Iceland 1967 only - Oct 29 1:00s 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Atlantic/Reykjavik -1:27:24 - LMT 1837
+ -1:27:48 - RMT 1908 # Reykjavik Mean Time?
+ -1:00 Iceland IS%sT 1968 Apr 7 1:00s
+ 0:00 - GMT
+
+# Italy
+# Gregorian calendar adopted 1582-10-15.
+#
+# From Paul Eggert (1996-05-06):
+# For Italian DST we have three sources: Shanks, Whitman, and F. Pollastri
+# <a href="http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html">
+# http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html (1996-03-14)
+# </a>
+# (`FP' below), taken from an Italian National Electrotechnical Institute
+# publication. When the three sources disagree, guess who's right, as follows:
+#
+# year FP Shanks (S) Whitman (W) Go with:
+# 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 C-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 S
+Rule Italy 1916 only - Oct 1 0:00s 0 -
+Rule Italy 1917 only - Apr 1 0:00s 1:00 S
+Rule Italy 1917 only - Sep 30 0:00s 0 -
+Rule Italy 1918 only - Mar 10 0:00s 1:00 S
+Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 -
+Rule Italy 1919 only - Mar 2 0:00s 1:00 S
+Rule Italy 1920 only - Mar 21 0:00s 1:00 S
+Rule Italy 1920 only - Sep 19 0:00s 0 -
+Rule Italy 1940 only - Jun 15 0:00s 1:00 S
+Rule Italy 1944 only - Sep 17 0:00s 0 -
+Rule Italy 1945 only - Apr 2 2:00 1:00 S
+Rule Italy 1945 only - Sep 15 0:00s 0 -
+Rule Italy 1946 only - Mar 17 2:00s 1:00 S
+Rule Italy 1946 only - Oct 6 2:00s 0 -
+Rule Italy 1947 only - Mar 16 0:00s 1:00 S
+Rule Italy 1947 only - Oct 5 0:00s 0 -
+Rule Italy 1948 only - Feb 29 2:00s 1:00 S
+Rule Italy 1948 only - Oct 3 2:00s 0 -
+Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 S
+Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
+Rule Italy 1969 only - Jun 1 0:00 1:00 S
+Rule Italy 1970 only - May 31 0:00 1:00 S
+Rule Italy 1970 only - Sep lastSun 0:00 0 -
+Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 S
+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 S
+Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
+Rule Italy 1974 only - May 26 0:00 1:00 S
+Rule Italy 1975 only - Jun 1 0:00s 1:00 S
+Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
+Rule Italy 1976 only - May 30 0:00s 1:00 S
+Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
+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
+ 0:49:56 - RMT 1893 Nov # Rome Mean Time
+ 1:00 Italy CE%sT 1942 Nov 2 2:00s
+ 1:00 C-Eur CE%sT 1944 Jul
+ 1:00 Italy CE%sT 1980
+ 1:00 EU CE%sT
+
+Link Europe/Rome Europe/Vatican
+Link Europe/Rome Europe/San_Marino
+
+# Latvia
+# From Paul Eggert (1996-11-22):
+# Rules after 1991 are by extension from Shanks. They contradict
+# IATA SSIM (1992/1996), which claims Latvia uses W-Eur rules, but
+# Peter Ilieve's relative writes that Latvia switched in September this year,
+# so we'll assume that the old C-Eur-style rules still apply.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Latvia 1992 max - Mar lastSun 2:00s 1:00 S
+Rule Latvia 1992 max - Sep lastSun 2:00s 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Riga 1:36:24 - LMT 1880
+ 1:36:24 - RMT 1918 Apr 15 2:00 #Riga Mean Time
+ 1:36:24 1:00 LST 1918 Sep 16 3:00 #Latvian Summer
+ 1:36:24 - RMT 1919 Apr 1 2:00
+ 1:36:24 1:00 LST 1919 May 22 3:00
+ 1:36:24 - RMT 1926 May 11
+ 2:00 - EET 1940 Aug 5
+ 3:00 - MSK 1941 Jul
+ 1:00 C-Eur CE%sT 1944 Aug 8
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 Latvia EE%sT
+
+# Liechtenstein
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun
+ 1:00 - CET 1981
+ 1:00 EU CE%sT
+
+# Lithuania
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Vilnius 1:41:16 - LMT 1880
+ 1:24:00 - WMT 1917 # Warsaw Mean Time
+ 1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time
+ 1:00 - CET 1920 Jul 12
+ 2:00 - EET 1920 Oct 9
+ 1:00 - CET 1940 Aug 3
+ 3:00 - MSK 1941 Jun 24
+ 1:00 C-Eur CE%sT 1944 Aug
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 C-Eur EE%sT
+# From Paul Eggert (1996-11-22):
+# IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is
+# known to be wrong about Estonia and Latvia, assume it's wrong here too.
+
+# 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 S
+Rule Lux 1916 only - Oct 1 1:00 0 -
+Rule Lux 1917 only - Apr 28 23:00 1:00 S
+Rule Lux 1917 only - Sep 17 1:00 0 -
+Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S
+Rule Lux 1918 only - Sep Mon>=15 2:00s 0 -
+Rule Lux 1919 only - Mar 1 23:00 1:00 S
+Rule Lux 1919 only - Oct 5 3:00 0 -
+Rule Lux 1920 only - Feb 14 23:00 1:00 S
+Rule Lux 1920 only - Oct 24 2:00 0 -
+Rule Lux 1921 only - Mar 14 23:00 1:00 S
+Rule Lux 1921 only - Oct 26 2:00 0 -
+Rule Lux 1922 only - Mar 25 23:00 1:00 S
+Rule Lux 1922 only - Oct Sun>=2 1:00 0 -
+Rule Lux 1923 only - Apr 21 23:00 1:00 S
+Rule Lux 1923 only - Oct Sun>=2 2:00 0 -
+Rule Lux 1924 only - Mar 29 23:00 1:00 S
+Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 -
+Rule Lux 1925 only - Apr 5 23:00 1:00 S
+Rule Lux 1926 only - Apr 17 23:00 1:00 S
+Rule Lux 1927 only - Apr 9 23:00 1:00 S
+Rule Lux 1928 only - Apr 14 23:00 1:00 S
+Rule Lux 1929 only - Apr 20 23:00 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
+ 1:00 Lux CE%sT 1918 Nov 25
+ 0:00 Lux WE%sT 1929 Oct 6 2:00s
+ 0:00 Belgium WE%sT 1940 May 14 3:00
+ 1:00 C-Eur WE%sT 1944 Sep 18 3:00
+ 1:00 Belgium CE%sT 1977
+ 1:00 EU CE%sT
+
+# Macedonia
+# see Yugoslavia
+
+# Malta
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Malta 1973 only - Mar 31 0:00s 1:00 S
+Rule Malta 1973 only - Sep 29 0:00s 0 -
+Rule Malta 1974 only - Apr 21 0:00s 1:00 S
+Rule Malta 1974 only - Sep 16 0:00s 0 -
+Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S
+Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
+Rule Malta 1980 only - Mar 31 2:00 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta
+ 1:00 Italy CE%sT 1942 Nov 2 2:00s
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
+ 1:00 Italy CE%sT 1973 Mar 31
+ 1:00 Malta CE%sT 1981
+ 1:00 EU CE%sT
+
+# Moldova
+# 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 MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 E-Eur EE%sT
+
+# 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 WE%sT 1945 Sep 16 3:00
+ 1:00 France CE%sT 1977
+ 1:00 EU CE%sT
+
+# 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 # Netherlands Summer Time
+Rule Neth 1916 only - Oct 2 2:00s 0 AMT # Amsterdam Mean Time
+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 1936 - 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
+Rule Neth 1937 only - Jul 1 0:00 1:00 S
+Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 -
+# Whitman gives 1939 Apr 15 and 1940 Apr 19; go with Shanks.
+Rule Neth 1938 1939 - May 15 2:00s 1:00 S
+Rule Neth 1945 only - Apr 2 2:00s 1:00 S
+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 NE%sT 1940 May 16 0:40
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 Neth CE%sT 1977
+ 1:00 EU CE%sT
+
+# Norway
+# Gregorian calendar adopted 1700-03-01.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+# Whitman gives 1916 May 21 - 1916 Oct 21; go with Shanks.
+Rule Norway 1916 only - May 22 1:00 1:00 S
+Rule Norway 1916 only - Sep 30 0:00 0 -
+# Shanks omits the following transition; go with Whitman.
+Rule Norway 1935 only - Aug 11 0:00 1:00 S
+# 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 S
+Rule Norway 1945 only - Oct 1 2:00s 0 -
+Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S
+Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
+Rule Norway 1965 only - Apr 25 2:00s 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Oslo 0:43:00 - LMT 1895
+ 1:00 Norway CE%sT 1940 Aug 10 23:00
+ 1:00 C-Eur CE%sT 1945 Apr 2 2:00
+ 1:00 Norway CE%sT 1980
+ 1:00 EU CE%sT
+#
+# Svalbard
+Link Europe/Oslo Arctic/Longyearbyen
+#
+# Jan Mayen
+# From Whitman:
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Atlantic/Jan_Mayen -1:00 - EGT
+
+# Poland
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Poland 1918 1919 - Sep 16 2:00s 0 -
+Rule Poland 1919 only - Apr 15 2:00s 1:00 S
+# Whitman gives 1944 Nov 30; go with Shanks.
+Rule Poland 1944 only - 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 S
+Rule Poland 1945 only - Nov 1 0:00 0 -
+Rule Poland 1946 only - Apr 14 0:00 1:00 S
+Rule Poland 1946 only - Sep 7 0:00 0 -
+Rule Poland 1947 only - May 4 0:00 1:00 S
+Rule Poland 1947 1948 - Oct Sun>=1 0:00 0 -
+Rule Poland 1948 only - Apr 18 0:00 1:00 S
+# Whitman also gives 1949 Apr 9 - 1949 Oct 1; go with Shanks.
+Rule Poland 1957 only - Jun 2 1:00s 1:00 S
+Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
+Rule Poland 1958 only - Mar 30 1:00s 1:00 S
+Rule Poland 1959 only - May 31 1:00s 1:00 S
+Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
+Rule Poland 1960 only - Apr 3 1:00s 1:00 S
+Rule Poland 1961 1964 - May Sun>=25 1:00s 1:00 S
+Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Warsaw 1:24:00 - LMT 1880
+ 1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time
+ 1:00 C-Eur CE%sT 1918 Sep 16 3:00
+ 2:00 Poland EE%sT 1922 Jun
+ 1:00 Poland CE%sT 1940 Jun 23 2:00
+ 1:00 C-Eur CE%sT 1944 Oct
+ 1:00 Poland CE%sT 1977 Apr 3 1:00
+ 1:00 W-Eur CE%sT
+# IATA SSIM (1991/1996) gives EU rules, but the _The Warsaw Voice_
+# <a href="http://www.contact.waw.pl/voice/v361/NewsInBrief.shtml">
+# http://www.contact.waw.pl/voice/v361/NewsInBrief.shtml (1995-09-24)
+# </a>
+# says the autumn 1995 switch was at 02:00.
+# Stick with W-Eur for now.
+
+# Portugal
+# Gregorian calendar adopted 1582-10-15.
+#
+# From Rui Pedro Salgueiro <rps@inescca.inescc.pt> (1992-11-12):
+# Portugal has recently (September, 27) changed timezone
+# (from WET to MET or CET) to harmonize with EEC.
+#
+# Martin Bruckmann <martin@ua.pt> (1996-02-29) reports via Peter Ilieve
+# 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.
+#
+# From Paul Eggert (1996-11-12):
+# IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions
+# at 02:00u, not 01:00u. Assume that these are typos.
+# IATA SSIM (1991/1992) reports that the Azores were at -1:00.
+# IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00.
+# Guess that the Azores changed to EU rules in 1992 (since that's when Portugal
+# harmonized with the EU), and that they stayed +0:00 that winter.
+#
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Port 1916 only - Jun 17 23:00 1:00 S
+# 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 S
+Rule Port 1917 1921 - Oct 14 23:00s 0 -
+Rule Port 1918 only - Mar 1 23:00s 1:00 S
+Rule Port 1919 only - Feb 28 23:00s 1:00 S
+Rule Port 1920 only - Feb 29 23:00s 1:00 S
+Rule Port 1921 only - Feb 28 23:00s 1:00 S
+Rule Port 1924 only - Apr 16 23:00s 1:00 S
+Rule Port 1924 only - Oct 14 23:00s 0 -
+Rule Port 1926 only - Apr 17 23:00s 1:00 S
+Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 -
+Rule Port 1927 only - Apr 9 23:00s 1:00 S
+Rule Port 1928 only - Apr 14 23:00s 1:00 S
+Rule Port 1929 only - Apr 20 23:00s 1:00 S
+Rule Port 1931 only - Apr 18 23:00s 1:00 S
+# Whitman gives 1931 Oct 8; go with Shanks.
+Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
+Rule Port 1932 only - Apr 2 23:00s 1:00 S
+# Shanks gives 1934 Apr 4; go with Whitman.
+Rule Port 1934 only - Apr 7 23:00s 1:00 S
+# Whitman gives 1934 Oct 5; go with Shanks.
+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 S
+Rule Port 1936 only - Apr 18 23:00s 1:00 S
+# Whitman gives 1937 Apr 2; go with Shanks.
+Rule Port 1937 only - Apr 3 23:00s 1:00 S
+Rule Port 1938 only - Mar 26 23:00s 1:00 S
+Rule Port 1939 only - Apr 15 23:00s 1:00 S
+# Whitman gives 1939 Oct 7; go with Shanks.
+Rule Port 1939 only - Nov 18 23:00s 0 -
+Rule Port 1940 only - Feb 24 23:00s 1:00 S
+# Shanks gives 1940 Oct 7; go with Whitman.
+Rule Port 1940 1941 - Oct 5 23:00s 0 -
+Rule Port 1941 only - Apr 5 23:00s 1:00 S
+Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S
+Rule Port 1942 only - Apr 25 22:00s 2:00 DS
+Rule Port 1942 only - Aug 15 22:00s 1:00 S
+Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 -
+Rule Port 1943 only - Apr 17 22:00s 2:00 DS
+Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 S
+Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 DS
+Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S
+Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
+Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S
+Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 -
+# Shanks says DST was observed in 1950; go with Whitman.
+# Whitman gives Oct lastSun for 1952 on; go with Shanks.
+Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S
+Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 -
+Rule Port 1977 only - Mar 27 0:00s 1:00 S
+Rule Port 1977 only - Sep 25 0:00s 0 -
+Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S
+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 S
+Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S
+Rule Port 1983 only - Mar lastSun 2:00s 1:00 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Lisbon -0:36:32 - LMT 1884
+ -0:36:32 - LMT 1911 May 24 # Lisbon Mean Time
+ 0:00 Port WE%sT 1966 Apr 3 2:00
+ 1:00 - CET 1976 Sep 26 1:00
+ 0:00 Port WE%sT 1983 Sep 25 1:00s
+ 0:00 W-Eur WE%sT 1992 Sep 27 1:00s
+ 1:00 EU CE%sT 1996 Mar 31 1:00u
+ 0:00 EU WE%sT
+Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
+ -1:55 - HMT 1911 May 24 # Horta Mean Time
+ -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time
+ -1:00 Port AZO%sT 1983 Sep 25 1:00s
+ -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s
+ 0:00 EU WE%sT 1993 Mar 28 1:00u
+ -1:00 EU AZO%sT
+Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
+ -1:08 - FMT 1911 May 24 # Funchal Mean Time
+ -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time
+ 0:00 Port WE%sT 1983 Sep 25 1:00s
+ 0:00 EU WE%sT
+
+# Romania
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Romania 1932 only - May 21 0:00s 1:00 S
+Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 -
+Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 S
+Rule Romania 1979 only - May 27 0:00 1:00 S
+Rule Romania 1979 only - Sep lastSun 0:00 0 -
+Rule Romania 1980 only - Apr 5 23:00 1:00 S
+Rule Romania 1980 only - Sep lastSun 1:00 0 -
+Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S
+Rule Romania 1991 1993 - Sep lastSun 0:00s 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
+ 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
+ 2:00 Romania EE%sT 1981 Mar 29 2:00s
+ 2:00 C-Eur EE%sT 1991
+ 2:00 Romania EE%sT 1994
+ 2:00 E-Eur EE%sT
+
+# Russia
+
+# From Chris Carrier <72157.3334@CompuServe.COM> (1996-12-02):
+# On 1929-10-01 the Soviet Union instituted an ``Eternal Calendar''
+# with 30-day months plus 5 holidays, with a 5-day week.
+# On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the
+# Gregorian calendar while retaining the 6-day week; on 1940-06-27 it
+# reverted to the 7-day week. With the 6-day week the usual days
+# off were the 6th, 12th, 18th, 24th and 30th of the month.
+# (Source: Evitiar Zerubavel, _The Seven Day Circle_)
+#
+# From Paul Eggert <eggert@twinsun.com> (1996-11-22):
+# Except for Moscow after 1919-07-01, I invented the time zone abbreviations,
+# and (unless otherwise specified) guessed what happened after 1991.
+# Moscow time zone abbreviations after 1919-07-01, and Moscow rules after 1991,
+# are from Andrey A. Chernov. The rest is from Shanks and the IATA.
+#
+# From Andrey A. Chernov <ache@nagual.ru> (1996-10-04):
+# `MSK' and `MSD' were born and used initially on Moscow computers with
+# Unix-like OSes by several developer groups (e.g. Demos group, Kiae group)....
+# The next step was the UUCP network, the Relcom predecessor
+# (used mainly for mail), and MSK/MSD was actively used there.
+#
+# From Chris Carrier <72157.3334@CompuServe.COM> (1996-10-30):
+# According to a friend of mine who rode the Trans-Siberian Railroad from
+# Moscow to Irkutsk in 1995, public air and rail transport in Russia ...
+# still follows Moscow time, no matter where in Russia it is located.
+#
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Kaliningrad 1:22:00 - LMT 1893 Apr
+ 1:00 C-Eur CE%sT 1945
+ 2:00 Poland CET 1946
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 - EET 1992 Jan 19 2:00s
+ 3:00 Russia MSK/MSD 1994
+# IATA SSIM (1994-02) says Kaliningrad is at UTC+2; guess 1994 change.
+ 2:00 Russia EE%sT
+Zone Europe/Moscow 2:30:20 - LMT 1880
+ 2:30:20 Russia %s 1919 Jul 1 2:00
+ 3:00 Russia MSK/MSD 1922 Oct
+ 2:00 - EET 1930 Jun 21
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+ 2:00 - EET 1992 Jan 19 2:00s
+ 3:00 Russia MSK/MSD
+Zone Europe/Samara 3:20:36 - LMT 1924 May 2
+ 3:00 - KUYT 1957 Mar # Kuybyshev Time
+ 4:00 Russia KUY%sT 1991 Mar 31 2:00s
+ 3:00 1:00 KUYST 1991 Sep 29 2:00s
+ 3:00 - SAMT 1992 Jan 19 2:00s # Samara Time
+ 4:00 Russia SAM%sT
+Zone Asia/Yekaterinburg 4:02:34 - LMT 1924 May 2
+ 4:00 - SVET 1957 Mar # Sverdlovsk Time
+ 5:00 Russia SVE%sT 1991 Mar 31 2:00s
+ 4:00 1:00 SVEST 1991 Sep 29 2:00s
+ 4:00 - SVET 1992 Jan 19 2:00s
+ 5:00 Russia YEK%sT # Yekaterinburg Time
+Zone Asia/Omsk 4:53:36 - LMT 1924 May 2
+ 5:00 - OMST 1957 Mar # Omsk Time
+ 6:00 Russia OMS%sT 1991 Mar 31 2:00s
+ 5:00 1:00 OMSST 1991 Sep 29 2:00s
+ 5:00 - OMST 1992 Jan 19 2:00s
+ 6:00 Russia OMS%sT
+# From Stanislaw A. Kuzikowski <S.A.Kuz@iae.nsk.su> (1994-06-29):
+# But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
+# I do not know why they have decided to make this change;
+# as far as I remember it was done exactly during winter->summer switching
+# so we (Novosibirsk) simply did not switch.
+Zone Asia/Novosibirsk 5:31:40 - LMT 1924 May 2
+ 6:00 - NOVT 1957 Mar # Novosibirsk Time
+ 7:00 Russia NOV%sT 1991 Mar 31 2:00s
+ 6:00 1:00 NOVST 1991 Sep 29 2:00s
+ 6:00 - NOVT 1992 Jan 19 2:00s
+ 7:00 Russia NOV%sT 1994 Mar 27 2:00s
+ 6:00 1:00 NOVST 1994 Sep 25 2:00s
+ 6:00 Russia NOV%sT
+Zone Asia/Krasnoyarsk 6:11:20 - LMT 1924 May 2
+ 6:00 - KRAT 1957 Mar # Krasnoyarsk Time
+ 7:00 Russia KRA%sT 1991 Mar 31 2:00s
+ 6:00 1:00 KRAST 1991 Sep 29 2:00s
+ 6:00 - KRAT 1992 Jan 19 2:00s
+ 7:00 Russia KRA%sT
+Zone Asia/Irkutsk 6:57:20 - LMT 1880
+ 6:57:20 - IMT 1924 May 2 # Irkutsk Mean Time
+ 7:00 - IRKT 1957 Mar # Irkutsk Time
+ 8:00 Russia IRK%sT 1991 Mar 31 2:00s
+ 7:00 1:00 IRKST 1991 Sep 29 2:00s
+ 7:00 - IRKT 1992 Jan 19 2:00s
+ 8:00 Russia IRK%sT
+Zone Asia/Yakutsk 8:38:40 - LMT 1924 May 2
+ 8:00 - YAKT 1957 Mar # Yakutsk Time
+ 9:00 Russia YAK%sT 1991 Mar 31 2:00s
+ 8:00 1:00 YAKST 1991 Sep 29 2:00s
+ 8:00 - YAKT 1992 Jan 19 2:00s
+ 9:00 Russia YAK%sT
+Zone Asia/Vladivostok 8:47:44 - LMT 1880
+ 8:47:44 - VMT 1924 May 2 # Vladivostok MT
+ 9:00 - VLAT 1957 Mar # Vladivostok Time
+ 10:00 Russia VLA%sT 1991 Mar 31 2:00s
+ 9:00 1:00 VLAST 1991 Sep 29 2:00s
+ 9:00 - VLAT 1992 Jan 19 2:00s
+ 10:00 Russia VLA%sT
+Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
+ 10:00 - MAGT 1957 Mar # Magadan Time
+ 11:00 Russia MAG%sT 1991 Mar 31 2:00s
+ 10:00 1:00 MAGST 1991 Sep 29 2:00s
+ 10:00 - MAGT 1992 Jan 19 2:00s
+ 11:00 Russia MAG%sT
+# This name should be Asia/Petropavlovsk-Kamchatski, but that's too long.
+Zone Asia/Kamchatka 10:34:36 - LMT 1924 May 2
+ 11:00 - PETT 1957 Mar # P-K Time
+ 12:00 Russia PET%sT 1991 Mar 31 2:00s
+ 11:00 1:00 PETST 1991 Sep 29 2:00s
+ 11:00 - PETT 1992 Jan 19 2:00s
+ 12:00 Russia PET%sT
+Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
+ 12:00 - ANAT 1957 Mar # Anadyr Time
+ 13:00 Russia ANA%sT 1991 Mar 31 2:00s
+ 12:00 1:00 ANAST 1991 Sep 29 2:00s
+ 12:00 - ANAT 1992 Jan 19 2:00s
+ 13:00 Russia ANA%sT
+
+# Slovakia
+Link Europe/Prague Europe/Bratislava
+
+# Slovenia
+# see Yugoslavia
+
+# Spain
+# Gregorian calendar adopted 1582-10-15.
+# 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 S
+Rule Spain 1917 1919 - Oct 6 23:00s 0 -
+Rule Spain 1918 only - Apr 15 23:00s 1:00 S
+Rule Spain 1919 only - Apr 5 23:00s 1:00 S
+# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks.
+Rule Spain 1924 only - Apr 16 23:00s 1:00 S
+# 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 S
+# 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 S
+Rule Spain 1928 only - Apr 14 23:00s 1:00 S
+Rule Spain 1929 only - Apr 20 23:00s 1:00 S
+# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13; go with Shanks.
+Rule Spain 1937 only - May 22 23:00s 1:00 S
+Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
+Rule Spain 1938 only - Mar 22 23:00s 1:00 S
+Rule Spain 1939 only - Apr 15 23:00s 1:00 S
+Rule Spain 1940 only - Mar 16 23:00s 1:00 S
+# Whitman says no DST 1942-1945; go with Shanks.
+Rule Spain 1942 only - May 2 22:00s 2:00 DS
+Rule Spain 1942 only - Sep 1 22:00s 1:00 S
+Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 DS
+Rule Spain 1943 only - Oct 3 22:00s 1:00 S
+Rule Spain 1944 only - Oct 10 22:00s 1:00 S
+Rule Spain 1945 only - Sep 30 1:00 1:00 S
+Rule Spain 1946 only - Sep 30 0:00 0 -
+Rule Spain 1949 only - Apr 30 23:00 1:00 S
+Rule Spain 1949 only - Sep 30 1:00 0 -
+Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S
+Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
+Rule Spain 1976 only - Mar 27 23:00 1:00 S
+Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
+Rule Spain 1977 1978 - Apr 2 23:00 1:00 S
+Rule Spain 1978 only - Oct 1 1:00 0 -
+# The following rules are copied from Morocco from 1967 through 1978.
+Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S
+Rule SpainAfrica 1967 only - Oct 1 0:00 0 -
+Rule SpainAfrica 1974 only - Jun 24 0:00 1:00 S
+Rule SpainAfrica 1974 only - Sep 1 0:00 0 -
+Rule SpainAfrica 1976 1977 - May 1 0:00 1:00 S
+Rule SpainAfrica 1976 only - Aug 1 0:00 0 -
+Rule SpainAfrica 1977 only - Sep 28 0:00 0 -
+Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
+Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Madrid -0:14:44 - LMT 1901
+ 0:00 Spain WE%sT 1946 Sep 30
+ 1:00 Spain CE%sT 1979
+ 1:00 EU CE%sT
+Zone Africa/Ceuta -0:21:16 - LMT 1901
+ 0:00 - WET 1918 May 6 23:00
+ 0:00 1:00 WEST 1918 Oct 7 23:00
+ 0:00 - WET 1924
+ 0:00 Spain WE%sT 1929
+ 0:00 SpainAfrica WE%sT 1984 Mar 16
+ 1:00 - CET 1986
+ 1:00 EU CE%sT
+Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
+ -1:00 - CANT 1946 Sep 30 1:00 # Canaries Time
+ 0:00 - WET 1980 Apr 6 0:00s
+ 0:00 1:00 WEST 1980 Sep 28 0:00s
+ 0:00 EU WE%sT
+# IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u.
+# Ignore this for now, as the Canaries are part of the EU.
+
+# Sweden
+
+# From: msb@sq.com (Mark Brader)
+# <a href=news:1996Jul6.012937.29190@sq.com>
+# news:1996Jul6.012937.29190@sq.com
+# </a>:
+#
+# In 1700, Denmark made the transition from Julian to Gregorian. Sweden
+# decided to *start* a transition in 1700 as well, but rather than have one of
+# those unsightly calendar gaps :-), they simply decreed that the next leap
+# year after 1696 would be in 1744 -- putting the whole country on a calendar
+# different from both Julian and Gregorian for a period of 40 years.
+#
+# However, in 1704 something went wrong and the plan was not carried through;
+# they did, after all, have a leap year that year. And one in 1708. In 1712
+# they gave it up and went back to Julian, putting 30 days in February that
+# year!...
+#
+# Then in 1753, Sweden made the transition to Gregorian in the usual manner,
+# getting there only 13 years behind the original schedule.
+#
+# (A previous posting of this story was challenged, and Swedish readers
+# produced the following references to support it: "Tiderakning och historia"
+# by Natanael Beckman (1924) and "Tid, en bok om tiderakning och
+# kalendervasen" by Lars-Olof Lode'n (no date was given).)
+
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Stockholm 1:12:12 - LMT 1878 May 31
+ 1:12:12 - SMT 1900 Jan 1 1:00 # Stockholm MT
+ 1:00 - CET 1916 Apr 14 23:00s
+ 1:00 1:00 CEST 1916 Sep 30 23:00s
+ 1:00 - CET 1980
+ 1:00 EU CE%sT
+
+# Switzerland
+# The Gregorian calendar was introduced gradually in Switzerland,
+# by omitting leap years during 1583-1812.
+# 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 S
+Rule Swiss 1940 only - Dec 31 0:00 0 -
+# From Shanks (1991):
+Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
+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
+ 0:29:44 - BMT 1894 Jun # Bern Mean Time
+ 1:00 Swiss CE%sT 1981
+ 1:00 EU CE%sT
+
+# Turkey
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Turkey 1916 only - May 1 0:00 1:00 S
+Rule Turkey 1916 only - Oct 1 0:00 0 -
+Rule Turkey 1920 only - Mar 28 0:00 1:00 S
+Rule Turkey 1920 only - Oct 25 0:00 0 -
+Rule Turkey 1921 only - Apr 3 0:00 1:00 S
+Rule Turkey 1921 only - Oct 3 0:00 0 -
+Rule Turkey 1922 only - Mar 26 0:00 1:00 S
+Rule Turkey 1922 only - Oct 8 0:00 0 -
+# Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925; go with Shanks.
+Rule Turkey 1924 only - May 13 0:00 1:00 S
+Rule Turkey 1924 1925 - Oct 1 0:00 0 -
+Rule Turkey 1925 only - May 1 0:00 1:00 S
+# Shanks omits the first two transitions in 1940; go with Whitman.
+Rule Turkey 1940 only - Jun 30 0:00 1:00 S
+Rule Turkey 1940 only - Oct 5 0:00 0 -
+Rule Turkey 1940 only - Dec 1 0:00 1:00 S
+Rule Turkey 1941 only - Sep 21 0:00 0 -
+Rule Turkey 1942 only - Apr 1 0:00 1:00 S
+# Whitman omits the next two transition and gives 1945 Oct 1; go with Shanks.
+Rule Turkey 1942 only - Nov 1 0:00 0 -
+Rule Turkey 1945 only - Apr 2 0:00 1:00 S
+Rule Turkey 1945 only - Oct 8 0:00 0 -
+Rule Turkey 1946 only - Jun 1 0:00 1:00 S
+Rule Turkey 1946 only - Oct 1 0:00 0 -
+Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 S
+Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 -
+Rule Turkey 1949 only - Apr 10 0:00 1:00 S
+Rule Turkey 1950 only - Apr 19 0:00 1:00 S
+Rule Turkey 1951 only - Apr 22 0:00 1:00 S
+Rule Turkey 1951 only - Oct 8 0:00 0 -
+Rule Turkey 1962 only - Jul 15 0:00 1:00 S
+Rule Turkey 1962 only - Oct 8 0:00 0 -
+Rule Turkey 1964 only - May 15 0:00 1:00 S
+Rule Turkey 1964 only - Oct 1 0:00 0 -
+Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 S
+Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 -
+Rule Turkey 1973 only - Jun 3 1:00 1:00 S
+Rule Turkey 1973 only - Nov 4 3:00 0 -
+Rule Turkey 1974 only - Mar 31 2:00 1:00 S
+Rule Turkey 1974 only - Nov 3 5:00 0 -
+Rule Turkey 1975 only - Mar 30 0:00 1:00 S
+Rule Turkey 1975 1976 - Oct lastSun 0:00 0 -
+Rule Turkey 1976 only - Jun 1 0:00 1:00 S
+Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 S
+Rule Turkey 1977 only - Oct 16 0:00 0 -
+Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 S
+Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 -
+Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 S
+Rule Turkey 1983 only - Jul 31 0:00 1:00 S
+Rule Turkey 1983 only - Oct 2 0:00 0 -
+Rule Turkey 1985 only - Apr 20 0:00 1:00 S
+Rule Turkey 1985 only - Sep 28 0:00 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Istanbul 1:55:52 - LMT 1880
+ 1:56:56 - IMT 1910 Oct # Istanbul Mean Time?
+ 2:00 Turkey EE%sT 1978 Oct 15
+ 3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time
+ 2:00 Turkey EE%sT 1986
+ 2:00 C-Eur EE%sT 1991
+ 2:00 EU EE%sT
+Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
+
+# Ukraine
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Ukraine 1917 only - Jul 1 23:00 1:00 UST # Ukrainian Summer Time
+Rule Ukraine 1917 only - Dec 28 0:00 0 KMT # Kiev Mean Time
+Rule Ukraine 1918 only - May 31 22:00 2:00 UDST # Ukrainian Double Summer Time
+Rule Ukraine 1918 only - Sep 17 0:00 1:00 UST
+Rule Ukraine 1919 only - May 31 23:00 2:00 UDST
+Rule Ukraine 1919 only - Jul 1 2:00 1:00 UST
+Rule Ukraine 1919 only - Aug 16 0:00 0 KMT
+Rule Ukraine 1921 only - Feb 14 23:00 1:00 UST
+Rule Ukraine 1921 only - Mar 21 23:00 2:00 UDST
+Rule Ukraine 1921 only - Sep 1 0:00 1:00 UST
+Rule Ukraine 1921 only - Oct 1 0:00 0 KMT
+Rule Crimea 1917 only - Jul 1 23:00 1:00 CST # Crimean Summer Time
+Rule Crimea 1917 only - Dec 28 0:00 0 NMT # Nikolayev Mean Time
+Rule Crimea 1918 only - May 31 22:00 2:00 CDST # Crimean Double Summer Time
+Rule Crimea 1918 only - Sep 17 0:00 1:00 CST
+Rule Crimea 1919 only - May 31 23:00 2:00 CDST
+Rule Crimea 1919 only - Jul 1 2:00 1:00 CST
+Rule Crimea 1919 only - Aug 16 0:00 0 NMT
+Rule Crimea 1921 only - Feb 14 23:00 1:00 CST
+Rule Crimea 1921 only - Mar 21 23:00 2:00 CDST
+Rule Crimea 1921 only - Sep 1 0:00 1:00 CST
+Rule Crimea 1921 only - Oct 1 0:00 0 NMT
+Rule Crimea 1996 max - Mar lastSun 0:00u 1:00 -
+Rule Crimea 1996 max - Oct lastSun 0:00u 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Kiev 2:02:04 - LMT 1880
+ 2:02:04 Ukraine %s 1924 May 2
+ 2:00 - EET 1930 Jun 21
+ 3:00 Russia MSK/MSD 1990 Jul 17
+ 2:00 E-Eur EE%sT 1996
+ 2:00 EU EE%sT
+Zone Europe/Simferopol 2:16:24 - LMT 1880
+ 2:08:00 Crimea %s 1924 May 2
+ 2:00 - EET 1930 Jun 21
+ 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
+ 2:00 1:00 EEST 1991 Sep 29 2:00s
+# From Paul Eggert <eggert@twinsun.com> (1996-10-21):
+# The _Economist_ (1994-05-28, p 45) reports that most of Crimea switched
+# from Kiev to Moscow time sometime after the January 1994 elections.
+# For now, guess it changed Feb 1.
+ 2:00 C-Eur EE%sT 1994 Feb
+# From IATA SSIM (1994/1996), which also says that Kerch is still like Kiev.
+ 3:00 E-Eur MSK/MSD 1996
+ 3:00 Crimea MSK/MSD
+
+# Yugoslavia
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/Belgrade 1:22:00 - LMT 1884
+ 1:00 - CET 1941 Apr 18 23:00
+ 1:00 C-Eur CE%sT 1945 May 8 2:00s
+ 1:00 1:00 CEST 1945 Sep 16 2:00s
+# Metod Kozelj <metod.kozelj@rzs-hm.si> reports that the legal date of
+# transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
+# Shanks doesn't give as much detail, so go with Kozelj.
+ 1:00 - CET 1982 Nov 27
+ 1:00 EU CE%sT
+Link Europe/Belgrade Europe/Ljubljana # Slovenia
+Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
+Link Europe/Belgrade Europe/Skopje # Macedonia
+Link Europe/Belgrade Europe/Zagreb # Croatia
+
+###############################################################################
+
+# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
+# 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 (1988-01-28):
+# ...
+# Greece: Last Sunday in April to last Sunday in September (iffy on dates).
+# Since 1978. Change at midnight.
+# ...
+# Monaco: has same DST as France.
+# ...