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authorUlrich Drepper <drepper@redhat.com>1998-02-15 19:31:34 +0000
committerUlrich Drepper <drepper@redhat.com>1998-02-15 19:31:34 +0000
commit14ea22e96c0b6fce54e2451c69c96c429177b62c (patch)
tree4fa8964f6ae07342ee56de737e944c60f6a4cf63 /time/europe
parentdc30f461575342ffeb6c0f2d5931493c1c3a91c0 (diff)
Update.
1998-02-15 Ulrich Drepper <drepper@cygnus.com> * nss/nsswitch.c (__nss_lookup): Return 1 if this was the last module. * nss/getXXent_r.c: If no more module is found don't try to call setXXent functions but leave unsuccessfully. * malloc/obstack.h: Cleanups. * sysdeps/wordsize-32/stdint.h: New file. * sysdeps/wordsize-64/stdint.h: New file. * sysdeps/generic/stdint.h: New file. * sysdeps/wordsize-32/inttypes.h: Adopt to use stdint.h. * sysdeps/wordsize-64/inttypes.h: Likewise. * stdlib/Makefile (headers): Add stdint.h. 1998-02-03 Paul Eggert <eggert@twinsun.com> * malloc/obstack.h (PTR_INT_TYPE): Use __PTRDIFF_TYPE__ if available. 1998-02-13 17:59 Zack Weinberg <zack@rabi.phys.columbia.edu> * timezone: New directory. * time/README, time/africa, time/antarctica, time/asia, time/australasia, time/backward, time/checktab.awk, time/etcetera, time/europe, time/factory, time/ialloc.c, time/iso3166.tab, time/leapseconds, time/northamerica, time/pacificnew, time/private.h, time/scheck.c, time/solar87, time/solar88, time/solar89, time/southamerica, time/systemv, time/test-tz.c, time/tzfile.h, time/tzselect.ksh, time/yearistype, time/zdump.c, time/zic.c, time/zone.tab: Moved to timezone. * time/tzfile.c: Include tzfile.h from timezone subdir. * time/tzset.c: Likewise. * time/Makefile: Cut out all code relating to timezones... * timezone/Makefile: ...and paste it in here. * Makefile (subdirs): Add timezone. 1998-02-13 18:45 H.J. Lu <hjl@gnu.org> * libc.map (_sys_nerr): Added. * sysdeps/unix/sysv/linux/errlist.c (_sys_nerr): Make it versioned symbol. 1998-02-15 17:16 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/bits/socket.h: Define PF_KEY and pseudo_AF_KEY instead of pseudo_PF_KEY and AF_KEY. Reported by Craig Metz <cmetz@inner.net>. 1998-01-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * nss/nss_files/files-parse.c (LOOKUP_NAME_CASE): Use __strcasecmp instead of strcasecmp. * nss/nss_files/files-alias.c (get_next_alias): Likewise. * wctype/wctype.h (_ISwbit): Avoid warning with gcc before 2.8. 1998-02-15 16:55 Ulrich Drepper <drepper@cygnus.com> * socket/sys/socket.h (setsockopt): Make OPTVAL parameter const. Patch by Dean Gaudet <dgaudet@arctic.org>. 1998-02-15 16:53 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/Dist: Add getresgid.c and getresuid.c. 1998-02-15 10:49 Zack Weinberg <zack@rabi.phys.columbia.edu> * sysdeps/unix/sysv/linux/poll.c: If compiled against a kernel with no poll syscall, just include the BSD version. * sysdeps/unix/sysv/linux/getresuid.c: If compiled against a kernel without the syscall, include the stub version. * sysdeps/unix/sysv/linux/getresgid.c: Likewise. * sysdeps/generic/getresuid.c: New file. * sysdeps/generic/getresgid.c: New file. 1998-02-15 Ulrich Drepper <drepper@cygnus.com> * stdio-common/vfscanf.c: Correct last change a bit.
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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.
-# ...