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Subject: v18i114: Table-driven ctime/time/localtime/date package, Part04/07
Newsgroups: comp.sources.unix
Sender: sources
Approved: rsalz@uunet.UU.NET
Submitted-by: ado@ncifcrf.gov
Posting-number: Volume 18, Issue 114
Archive-name: localtime3/part04
: To unbundle, sh this file
echo file 'africa' >&2
cat >'africa' <<'End of africa'
# @(#)africa 7.1
###############################################################################
# Egypt
# From Bob Devine (January 28, 1988):
# Egypt: DST from first day of May to first of October (ending may
# also be on Sept 30th not 31st -- you might want to ask one of the
# soc.* groups, you might hit someone who could ask an embassy).
# DST since 1960 except for 1981-82.
# From U. S. Naval Observatory (January 19, 1989):
# EGYPT 2 H AHEAD OF UTC
# EGYPT 3 H AHEAD OF UTC MAY 17 - SEP 30 (AFTER
# EGYPT RAMADAN)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Egypt 1960 max - May 1 2:00 1:00 " DST"
Rule Egypt 1960 max - Oct 1 2:00 0 -
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Egypt 2:00 Egypt EET%s 1981
2:00 - EET 1983
2:00 Egypt EET%s
###############################################################################
# Libya
# From Bob Devine (January 28 1988):
# Libya: Since 1982 April 1st to September 30th (?)
# From U. S. Naval Observatory (January 19, 1989):
# LIBYAN ARAB 1 H AHEAD OF UTC JAMAHIRIYA/LIBYA
# LIBYAN ARAB 2 H AHEAD OF UTC APR 1 - SEP 30 JAMAHIRIYA/LIBYA
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Libya 1982 max - Apr 1 2:00 1:00 " DST"
Rule Libya 1982 max - Sep 30 2:00 0 -
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Libya 2:00 Libya EET%s
End of africa
echo file 'antarctica' >&2
cat >'antarctica' <<'End of antarctica'
# @(#)antarctica 7.1
# From Arthur David Olson (February 13, 1988):
# No data available.
End of antarctica
echo file 'asia' >&2
cat >'asia' <<'End of asia'
# @(#)asia 7.1
# From Guy Harris:
# Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
# additional information from Tom Yap, Sun Microsystems Intercontinental
# Technical Support (including a page from the Official Airline Guide -
# Worldwide Edition). The names for time zones are guesses.
###############################################################################
# People's Republic of China
# From Guy Harris:
# People's Republic of China. Yes, they really have only one time zone.
# From Bob Devine (January 28, 1988):
# No they don't. See TIME mag, February 17, 1986 p.52. Even though
# China is across 4 physical time zones, before Feb 1, 1986 only the
# Peking (Bejing) time zone was recognized. Since that date, China
# has two of 'em -- Peking's and Urumqi (named after the capital of
# the Xinjiang Uighur Autonomous Region). I don't know about DST for it.
#
# . . .I just deleted the DST table and this editor makes it too
# painful to suck in another copy.. So, here is what I have for
# DST start/end dates for Peking's time zone (info from AP):
#
# 1986 May 4 - Sept 14
# 1987 mid-April - ??
# From U. S. Naval Observatory (January 19, 1989):
# CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
# CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule PRC 1970 max - Apr Sun<=14 2:00 1:00 D
Rule PRC 1970 max - Sep Sun<=14 3:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone PRC 8:00 PRC C%sT
###############################################################################
# Republic of China
# From Guy Harris
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone ROC 8:00 - CST
###############################################################################
# Hongkong
# From Guy Harris
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Hongkong 8:00 - HKT
###############################################################################
# Iran
# From Bob Devine (January 28, 1988):
# Iran: Last Sunday in March to third (?) Sunday in
# September. Since the revolution, the official calendar is Monarchic
# calendar; I have no idea what the correspondence between dates are.
# From U. S. Naval Observatory (January 19, 1989):
# IRAN 3.5H AHEAD OF UTC
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Iran 1988 max - Mar lastSun 2:00 1:00 D
Rule Iran 1988 max - Sep Sun>=15 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Iran 3:30 Iran I%sT
###############################################################################
# Israel
# From U. S. Naval Observatory (January 19, 1989):
# ISRAEL 2 H AHEAD OF UTC
# ISRAEL 3 H AHEAD OF UTC APR 10 - SEP 3
# From Arthur David Olson (January 21, 1989):
# Stick with rules below (which were provided by Guy Harris and which were
# posted in 1988) for now.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Israel 1987 max - Apr Sun<=21 2:00 1:00 D
Rule Israel 1987 max - Aug Sat<=28 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Israel 3:00 Israel I%sT
###############################################################################
# Japan
# From Guy Harris
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Japan 9:00 - JST
###############################################################################
# Republic of Korea
# From Guy Harris:
# According to someone at the Korean Times in San Francisco,
# Daylight Savings Time was not observed until 1987. He did not know
# at what time of day DST starts or ends.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule ROK 1987 max - May Sun<=14 2:00 1:00 D
Rule ROK 1987 max - Oct Sun<=14 3:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone ROK 9:00 ROK K%sT
###############################################################################
# Lebanon
# From Bob Devine (January 28, 1988):
# Lebanon: They do have DST but I don't know the dates.
###############################################################################
# Singapore
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Singapore 8:00 - SST
End of asia
echo file 'australasia' >&2
cat >'australasia' <<'End of australasia'
# @(#)australasia 7.1
# Incorporates updates for Australia from Robert Elz' australia 1.1
# and further updates from the Australian consulate.
###############################################################################
# Australia
# Australian Data (for states with DST), standard rules
# Includes shift in 1987 to follow Vic/NSW rules for ending DST,
# and shift in 1986 to start DST earlier.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Oz 1971 1985 - Oct lastSun 2:00 1:00 -
Rule Oz 1986 max - Oct Sun<=24 2:00 1:00 -
Rule Oz 1972 only - Feb 27 3:00 0 -
Rule Oz 1973 1986 - Mar Sun>=1 3:00 0 -
Rule Oz 1987 max - Mar Sun<=21 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/Tasmania 10:00 Oz EST
Zone Australia/Queensland 10:00 - EST # No DST here
Zone Australia/North 9:30 - CST # No DST here
Zone Australia/West 8:00 - WST # No DST here
Zone Australia/South 9:30 Oz CST
# Victoria jumped to a later ending date for DST in 1986 rather than 1987.
Zone Australia/Victoria 10:00 Oz EST 1985 Oct lastSun 2:00
10:00 1:00 EST 1986 Mar Sun<=21 3:00
10:00 Oz EST
# New South Wales and subjurisdictions have their own ideas of a fun time.
# Based on law library research by John Mackin (john@basser.cs.su.oz),
# who notes:
# In Australia, time is not legislated federally, but rather by the
# individual states. Thus, while such terms as ``Eastern Standard Time''
# [I mean, of course, Australian EST, not any other kind] are in common
# use, _they have NO REAL MEANING_, as they are not defined in the
# legislation. This is very important to understand.
# I have researched New South Wales time only; . . .I hope that perhaps a
# resident of each state could be found to do it for their own state.
# (And I can guarantee that Victoria and NSW are different, so the link
# between them in the current australasia file must be broken.)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NSW 1971 1985 - Oct lastSun 2:00 1:00 -
Rule NSW 1972 only - Feb lastSun 3:00 0 -
Rule NSW 1973 1981 - Mar Sun>=1 3:00 0 -
Rule NSW 1982 only - Apr 4 3:00 0 -
Rule NSW 1983 1985 - Mar Sun>=1 3:00 0 -
Rule NSW 1986 only - Mar 16 3:00 0 -
Rule NSW 1986 only - Oct 19 2:00 1:00 -
Rule NSW 1987 only - Mar 15 3:00 0 -
Rule NSW 1987 max - Oct lastSun 2:00 1:00 -
Rule NSW 1988 max - Mar Sun<=21 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/NSW 10:00 NSW EST
# `Broken Hill' means the County of Yancowinna. [john@basser.cs.su.oz.au,1/4/89]
Zone Australia/Yancowinna 9:30 NSW ???
Zone Australia/LHI 10:30 NSW ???
# A footnote here:
#
# . . .
# Date: Thu, j19 Feb 87 12:02:17 EST
# From: Bradley White <seismo!k.cs.cmu.edu!bww>
# . . .
# I am including a description of Australian time zones. . .
# this stuff is definitely accurate.
# . . .
# a) Australian Eastern Time: (EST = GMT+10:00, EDT = GMT+11:00)
# . . .
# Summer of 86/87 - present (current legislation):
# third Sun Oct 02:00 EST -> third [S]un Mar 02:00 EST
#
# If this turns out to be true, substitute Sun<=21 (third Sunday in October)
# for Sun<=24 (next-to-last Sunday in October) above. . .some time before
# October 1988, the first time it makes a difference.
###############################################################################
# New Zealand
# New Zealand, from Elz' asia 1.1
# Elz says "no guarantees"
# From U. S. Naval Observatory (January 19, 1989):
# NEW ZEALAND 12 H AHEAD OF UTC (EXCLUDING CHATHAM ISLAND)
# NEW ZEALAND 13 H AHEAD OF UTC OCT 30, '88-MAR 4, '89
# NEW ZEALAND 12H45M AHEAD OF UTC CHATHAM ISLAND
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NZ 1974 max - Oct lastSun 2:00 1:00 D
Rule NZ 1975 max - Mar Sun>=1 3:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone NZ 12:00 NZ NZ%sT # New Zealand
End of australasia
echo file 'europe' >&2
cat >'europe' <<'End of europe'
# @(#)europe 7.1
# International country codes are used to identify countries' rules and
# zones
#
# This data is by no means authoritative; if you think you know better, go
# ahead and edit the file (and please send any changes to
# ado@ncifcrf.gov for general use in the future).
###############################################################################
# United Kingdom
# From Arthur David Olson (January 19, 1989):
#
# The starting and ending dates below (from which the rules are derived)
# are from Whitaker's Almanack for 1987, page 146.
# 1960 is the earliest year for which dates are given;
# Whitaker's notes that British Summer Time (and, in some years, Double Summer
# Time) was observed in earlier years but does not give start and end dates.
#
# 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.
# 1960 April 10 October 2 (yes, 2, according to the almanac)
# 1961 March 26 October 29
# 1962 March 25 October 28
# 1963 March 31 October 27
# 1964 March 22 October 25
# 1965 March 21 October 24
# 1966 March 20 October 23
# 1967 March 19 October 29
# 1968 February 18 October 27
# "British Standard Time, also one hour ahead of G. M. T., was kept between
# 1968 Oct. 27-1971 Oct. 31."
# 1972 March 19 October 29
# 1973 March 18 October 28
# 1974 March 17 October 27
# 1975 March 16 October 26
# 1976 March 21 October 24
# 1977 March 20 October 23
# 1978 March 19 October 29
# 1979 March 18 October 28
# 1980 March 16 October 26
# 1981 March 29 October 25
# 1982 March 28 October 24
# 1983 March 27 October 23
# 1984 March 25 October 28
# 1985 March 31 October 27
# 1986 March 30 October 26
# 1987 March 29 October 25
# From an Anonymous U. K. Donor (January 4, 1989):
#
# It is NOT possible to predict when [British Summer Time] will change
# in a future year.
#
# (The admiralty calculate when they think it should be (no more that a couple
# of years in advance) and advise the government who then decide whether or
# not they will take the admiralty's advice)
#
# ...the Gre[e]nwich...observatory...[was] very helpful.
#
# I was not able to track down the Admiralty formula (I tried hard but failed)
# ...
# 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.
#
# Summer time ends on Sunday 29 October 1989.
# ...
# Date: 5 Jan 89 09:50:38 GMT (Thu)
# From: Peter Kendell <nih-csl!uunet!mcvax!tcom.stc.co.uk!pete>
# ...
#
# From my Collins Diary for 1989 -
#
# "At the time of going to press the Home Office was unable to confirm
# the 1989 starting and finishing dates for BST*, but expressed the
# view that 26 March and 29 October were the likeliest dates to be
# adopted"
#
# *British Summer Time.
# From an Anonymous U. K. Donor (January 5, 1989):
#
# . . .our government is seriously considering applying Double Summer Time -
# putting the clocks forwards and back TWO hours for daylight saving time.
# This is advocated to standardise time in the EEC - we're all supposed to
# keep the same time and to change the clocks on the same dates in the future.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Historic starting rules
Rule GB-Eire 1960 only - Apr 10 1:00s 1:00 BST
Rule GB-Eire 1961 1963 - Mar lastSun 1:00s 1:00 BST
Rule GB-Eire 1964 1967 - Mar Sun>=19 1:00s 1:00 BST
Rule GB-Eire 1968 only - Feb 18 1:00s 1:00 BST
Rule GB-Eire 1972 1980 - Mar Sun>=16 1:00s 1:00 BST
# Historic ending rules
Rule GB-Eire 1960 only - Oct 2 1:00s 0 GMT
Rule GB-Eire 1961 1967 - Oct Sun>=23 1:00s 0 GMT
Rule GB-Eire 1971 only - Oct 31 1:00s 0 GMT
# Current rules
Rule GB-Eire 1981 max - Mar lastSun 1:00s 1:00 BST
Rule GB-Eire 1972 max - Oct Sun>=23 1:00s 0 GMT
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone GB-Eire 0:00 GB-Eire %s 1968 Oct 27 1:00s
1:00 - BST 1971 Oct 31 1:00s
0:00 GB-Eire %s
###############################################################################
# Continental Europe
# The use of 1986 as starting years below is conservative.
Rule W-Eur 1986 max - Mar lastSun 1:00s 1:00 " DST"
Rule W-Eur 1986 max - Sep lastSun 1:00s 0 -
Rule M-Eur 1986 max - Mar lastSun 2:00s 1:00 " DST"
Rule M-Eur 1986 max - Sep lastSun 2:00s 0 -
Rule E-Eur 1986 max - Mar lastSun 3:00s 1:00 " DST"
Rule E-Eur 1986 max - Sep lastSun 3:00s 0 -
Rule Turkey 1986 max - Mar lastSun 1:00 1:00 " DST"
Rule Turkey 1986 max - Sep lastSun 1:00 0 -
Rule W-SU 1986 max - Mar lastSun 2:00s 1:00 " DST"
Rule W-SU 1986 max - Sep lastSun 2:00s 0 -
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone WET 0:00 W-Eur WET%s
Zone Iceland 0:00 - WET
Zone MET 1:00 M-Eur MET%s
Zone Poland 1:00 W-Eur MET%s
Zone EET 2:00 E-Eur EET%s
Zone Turkey 3:00 Turkey EET%s
Zone W-SU 3:00 M-Eur ????
# Tom Hoffman says that MET is also known as Central European Time
Link MET CET
###############################################################################
# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
# the last Sunday in March to the last Sunday in September in 1986.
# The source shows Romania changing a day later than everybody else.
#
# According to Bernard Sieloff's source, Poland is in the MET time zone but
# uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules.
# Bernard Sieloff's source claims Romania switches on the same day, but at
# 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey
# switches on the same day, but switches on at 01:00 standard time
# and off at 00:00 standard time (i.e., 01:00 DST)
# ...
# Date: Wed, 28 Jan 87 16:56:27 -0100
# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
# Message-Id: <8701281556.AA22174@cgcha.uucp>
# ...
#
# ...the European time rules are...standardized since 1981, when
# most European coun[tr]ies started DST. Before that year, only
# a few countries (UK, France, Italy) had DST, each according
# to own national rules. In 1981, however, DST started on
# 'Apr firstSun', and not on 'Mar lastSun' as in the following
# years...
# But also since 1981 there are some more national exceptions
# than listed in 'europe': Switzerland, for example, joined DST
# one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
# lastSun' in 1981---I don't know how they handle now.
#
# Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
# Soviet Union (as far as I know).
#
# Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
# 4002 Basle, Switzerland
# UUCP: ...!mcvax!cernvax!cgcha!wtho
# ...
# Date: Wed, 4 Feb 87 22:35:22 +0100
# From: seismo!mcvax!cwi.nl!dik (Dik T. Winter)
# ...
#
# The information from Tom Hofmann is (as far as I know) not entirely correct.
# After a request from chongo at amdahl I tried to retrieve all information
# about DST in Europe. I was able to find all from about 1969.
#
# ...standardization on DST in Europe started in about 1977 with switches on
# first Sunday in April and last Sunday in September...
# In 1981 UK joined Europe insofar that
# the starting day for both shifted to last Sunday in March. And from 1982
# the whole of Europe used DST, with switch dates April 1 and October 1 in
# the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch
# dates...
#
# It should also be remembered that time-zones are not constants; e.g.
# Portugal switched in 1976 from MET (or CET) to WET with DST...
# Note also that though there were rules for switch dates not
# all countries abided to these dates, and many individual deviations
# occurred, though not since 1982 I believe. Another note: it is always
# assumed that DST is 1 hour ahead of normal time, this need not be the
# case; at least in the Netherlands there have been times when DST was 2 hours
# in advance of normal time.
#
# ...
# dik t. winter, cwi, amsterdam, nederland
# INTERNET : dik@cwi.nl
# BITNET/EARN: dik@mcvax
# From Bob Devine (January 28, 1988):
# ...
# Greece: Last Sunday in April to last Sunday in September (iffy on dates).
# Since 1978. Change at midnight.
# ...
# Monaco: has same DST as France.
# ...
End of europe
echo file 'northamerica' >&2
cat >'northamerica' <<'End of northamerica'
# @(#)northamerica 7.1
###############################################################################
# United States
# From Arthur David Olson:
# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
# See, for example, the front page of the Saturday, October 26, 1974
# and Sunday, October 27, 1974 editions of the Washington Post.
# From seismo!munnari!kre:
# I recall also being told by someone once that Canada didn't have
# the DST variations in 74/75 that the US did, but I am not nearly
# sure enough of this to add anything.
# From Arthur David Olson:
# The above has been confirmed by Bob Devine; we'll go with it here.
# From Arthur David Olson:
# Before the Uniform Time Act of 1966 took effect in 1967, observance of
# Daylight Saving Time in the US was by local option, except during wartime.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
Rule US 1918 1919 - Oct lastSun 2:00 0 S
Rule US 1942 only - Feb 9 2:00 1:00 W # War
Rule US 1945 only - Sep 30 2:00 0 S
Rule US 1967 max - Oct lastSun 2:00 0 S
Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
Rule US 1974 only - Jan 6 2:00 1:00 D
Rule US 1975 only - Feb 23 2:00 1:00 D
Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
Rule US 1987 max - Apr Sun>=1 2:00 1:00 D
# From Bob Devine (January 28, 1988):
# ...Alaska (and Hawaii) had the timezone names changed in 1967.
# old new
# Pacific Standard Time(PST) -same-
# Yukon Standard Time(YST) -same-
# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
# Nome Standard Time (NT) Bering Standard Time (BST)
#
# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
# The YST zone now covers nearly all of the state, AHST just part
# of the Aleutian islands. No DST.
# From U. S. Naval Observatory (January 19, 1989):
# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
# USA MOUNTAIN 7 H BEHIND UTC DENVER
# USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30
# USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO
# USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30
# USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST)
# USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT)
# USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W
# USA - " - 9 H BEHIND UTC APR 3 - OCT 30
# USA HAWAII 10 H BEHIND UTC
# USA BERING 11 H BEHIND UTC SAMOA, MIDWAY
# From Arthur David Olson (January 21, 1989):
# The above dates are for 1988.
# Note the "AKST" and "AKDT" abbreviations, the claim that there's
# no DST in Samoa, and the claim that there is DST in Alaska and the
# Aleutians.
# From Arthur David Olson (February 13, 1988):
# Legal standard time zone names, from United States Code (1982 Edition and
# Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names
# up to April 1, 1967 (when most provisions of the Uniform Time Act of 1966
# took effect), as explained in sections 263 and 261:
# (none)
# United States standard eastern time
# United States standard mountain time
# United States standard central time
# United States standard Pacific time
# (none)
# United States standard Alaska time
# (none)
# Next, names from April 1, 1967 until November 30, 1983 (the date for
# public law 98-181):
# Atlantic standard time
# eastern standard time
# central standard time
# mountain standard time
# Pacific standard time
# Yukon standard time
# Alaska-Hawaii standard time
# Bering standard time
# And after November 30, 1983:
# Atlantic standard time
# eastern standard time
# central standard time
# mountain standard time
# Pacific standard time
# Alaska standard time
# Hawaii-Aleutian standard time
# Samoa standard time
# The law doesn't give abbreviations.
# Easy stuff first--including Alaska, where we ignore history (since we
# can't tell if we should give Yukon time or Alaska-Hawaii time for "old"
# times).
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone US/Eastern -5:00 US E%sT
Zone US/Central -6:00 US C%sT
Zone US/Mountain -7:00 US M%sT
Zone US/Pacific -8:00 US P%sT
Zone US/Alaska -9:00 US AK%sT # Abbreviation per USNO
# Mainland US areas that are always Standard as of 1986.
Zone US/East-Indiana -5:00 US E%sT 1946
-5:00 - EST # Always EST as of 1986
Zone US/Arizona -7:00 US M%sT 1946
-7:00 - MST # Always MST as of 1986
# From Arthur David Olson (February 13, 1988):
# However. . .a writer from the Inter Tribal Council of Arizona, Inc.,
# notes in private correspondence dated 12/28/87 that "Presently, only the
# Navajo Nation participates in the Daylight Saving Time policy, due to its
# large size and location in three states." (The "only" means that other
# tribal nations don't use DST.)
Link US/Mountain Navajo
# From Bob Devine (January 28, 1988):
# Michigan didn't observe DST from 1968 to 1973.
Zone US/Michigan -5:00 US E%sT 1968
-5:00 - EST 1973
-5:00 US E%sT
# Samoa just changes names. No DST, per Naval Observatory.
Zone US/Samoa -11:00 - NST 1967 Apr 1 # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
# Aleutian has a name change. DST, per Naval Observatory.
Zone US/Aleutian -10:00 US AH%sT 1983 Nov 30
-10:00 US HA%sT
# From Arthur David Olson:
# And then there's Hawaii.
# DST was observed for one day in 1933;
# Standard time was change by half an hour in 1947;
# it's always standard as of 1986.
Zone US/Hawaii -10:30 US H%sT 1933 Apr 30 2:00
-10:30 1:00 HDT 1933 May 1 2:00
-10:30 US H%sT 1947 Jun 8 2:00
-10:00 - HST
# Old names, for S5 users
# Link LINK-FROM LINK-TO
# Link US/Eastern EST5EDT
# Link US/Central CST6CDT
# Link US/Mountain MST7MDT
# Link US/Pacific PST8PDT
# Link US/East-Indiana EST
# Link US/Arizona MST
# Link US/Hawaii HST
################################################################################
# Canada
# Canada is reportedly lots easier than the US--leastways since 1951.
# I don't know what they did before then.
# 4.3BSD claims that it's perfectly regular.
# According to a posting in "comp.bugs.misc", "comp.unix.wizards", etc.
# on February 8, 1987, by Dave Sherman of the Law Society of Upper Canada,
# "...Canada (well, Ontario and at least some of the other provinces) are
# adopting the new daylight savings time rules...". We assume all of
# Canada is doing so.
# From Bob Devine (January 28, 1988):
# All of Canada did have DST from your first rule except Saskatchewan.
# Which parts did not observe DST is hard to pinpoint but most of the
# province follows the rules.
# NOTE: those that didn't have DST for that rule, also
# probably did not have it for several years previous.
# From U. S. Naval Observatory (January 19, 1989):
# CANADA NEW FDL 3.5H BEHIND UTC ST.JOHN'S
# CANADA NEW FDL 1.5H BEHIND UTC APR 3 - OCT 29
# CANADA ATLANTIC 4 H BEHIND UTC HALIFAX
# CANADA ATLANTIC 3 H BEHIND UTC APR 3 - OCT 29
# CANADA EASTERN 5 H BEHIND UTC TORONTO, MONTREAL, OTTAWA
# CANADA EASTERN 4 H BEHIND UTC APR 3 - OCT 29
# CANADA CENTRAL 6 H BEHIND UTC REGINA, WINNIPEG
# CANADA CENTRAL 5 H BEHIND UTC APR 3 - OCT 29
# CANADA MOUNTAIN 7 H BEHIND UTC CALGARY, EDMONTON
# CANADA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 29
# CANADA PACIFIC 8 H BEHIND UTC VANCOUVER
# CANADA PACIFIC 7 H BEHIND UTC APR 3 - OCT 29
# CANADA YUKON SAME AS PACIFIC DAWSON
# From Arthur David Olson (January 21, 1989):
# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
# Note claim that there's double DST in Newfoundland and that Yukon should
# be same as Pacific. Stick with rules posted in 1988 until more authoritative
# information is available.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Canada 1969 max - Oct lastSun 2:00 0 S
Rule Canada 1969 1986 - Apr lastSun 2:00 1:00 D
Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
# Bob Devine says that DST *is* observed in Newfoundland
Zone Canada/Newfoundland -3:30 Canada N%sT
Zone Canada/Atlantic -4:00 Canada A%sT
Zone Canada/Eastern -5:00 Canada E%sT
Zone Canada/Central -6:00 Canada C%sT
Zone Canada/East-Saskatchewan -6:00 - CST # No DST as of 1987
Zone Canada/Mountain -7:00 Canada M%sT
Zone Canada/Pacific -8:00 Canada P%sT
Zone Canada/Yukon -9:00 Canada Y%sT
###############################################################################
# Mexico
# From Guy Harris:
# Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
# Rules prior to 1987 are unknown.
# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
# observe DST." This is presumably Baja California Norte, above 28th parallel,
# as listed there; Mexico/BajaSur is for "Baja California Sur and N. Pacific
# Coast (States of Sinaloa and Sonora)."
# From Bob Devine (January 28, 1988):
# The Federal District (where Mexico City is) has observed [DST] several
# times but not recently.
#
# I don't where to drawn the line in the North Baja area. 28th latitude
# sounds good -- but it may be higher (how far [d]o radio stations from
# San Diego affect culture?).
#
# The dates of DST probably go back to 1981. The rules are the same as
# US's. This is going to be a headache for US presidential electi[o]n years!
# From Arthur David Olson (February 13, 1988)
# Since the 1981 starting date is only "probable," we'll keep the 1987
# starting date below.
# From U. S. Naval Observatory (January 19, 1989):
# MEXICO BAJA CAL N 7 H BEHIND UTC BAJA CALIFORNIA SUR AND
# MEXICO BAJA CAL N N. PACIFIC COAST (STATES
# MEXICO BAJA CAL N OF SINALOA AND SONORA)
# MEXICO BAJA CAL N 8 H BEHIND UTC ABOVE 28TH PARALLAL APR 3
# MEXICO BAJA CAL N - OCT 29
# MEXICO BAJA CAL N 7 H BEHIND UTC ABOVE 28TH PARALLAL APR 3
# MEXICO BAJA CAL N - 0CT 29
# MEXICO 6 H BEHIND UTC STATES OF DURANGO,
# MEXICO COAHUILA, NUEVO LEON,
# MEXICO TAMAULIPAS
# MEXICO 5 H BEHIND UTC STATES OF DURANGO,
# MEXICO COAHUILA, NUEVO LEON,
# MEXICO TAMAULIPAS APR 3 - OCT 29
# MEXICO 6 H BEHIND UTC GENERAL MEXICO, STATES OF
# MEXICO CAMPECHE, QUINTANA ROO AND
# MEXICO YUCATAN
# From Arthur David Olson (January 21, 1989):
# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
# USNO claims there should be four Mexican zones rather than three:
# a zone that's GMT-8 with DST; a zone that's always GMT-7;
# a zone that's GMT-6 with DST; and a zone that's always GMT-6.
# Wait for more authoritative information before changing.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mexico 1987 max - Oct lastSun 2:00 0 S
Rule Mexico 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Mexico/BajaNorte -8:00 Mexico P%sT
Zone Mexico/BajaSur -7:00 - MST
Zone Mexico/General -6:00 - CST
###############################################################################
# Jamaica
# From Bob Devine (January 28, 1988):
# Follows US rules.
# From U. S. Naval Observatory (January 19, 1989):
# JAMAICA 5 H BEHIND UTC
Link US/Eastern Jamaica
###############################################################################
# Cuba
# From Bob Devine (January 28, 1988):
# . . .DST is from 2nd Sunday in May to 2nd Sunday in October since 1981.
# Change at midnight. In 1979 & 1980, started at 3rd Sunday in March
# (I think).
# From U. S. Naval Observatory (January 19, 1989):
# CUBA 5 H BEHIND UTC
# CUBA 4 H BEHIND UTC MAR 20 - OCT 8
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
Rule Cuba 1979 1980 - Oct Sun>=8 0:00 0 S
Rule Cuba 1981 max - May Sun>=8 0:00 1:00 D
Rule Cuba 1981 max - Oct Sun>=8 0:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT
Zone Cuba -5:00 Cuba C%sT
End of northamerica
echo file 'southamerica' >&2
cat >'southamerica' <<'End of southamerica'
# @(#)southamerica 7.1
# From Guy Harris:
# From Official Airline Guide - Worldwide Edition (1987). Countries not
# listed here do not observe DST, according to the OAG. Time zone names
# are pure inventions, and none are supplied for countries not observing
# DST; updates from natives would be appreciated. The times that DST
# starts and ends are based on the assumption that they switch a 2AM just
# as everybody else does.
###############################################################################
# Brazil
# From Guy Harris:
# The OAG lists October 25, 1987 and February 12, 1988 as the starting and
# ending dates, giving them as "estimated date(s) based on previous year". We
# infer a rule here from one example, always a dangerous practice.... Yes,
# they really do switch on Saturday, according to the OAG.
# "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for
# Fernando De Noronha.
# From Bob Devine (January 28, 1988):
# The only information I found is that there was no DST up to 1985.
# But there was some before 1952!
# From U. S. Naval Observatory (January 16, 1989):
# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
# BRAZIL '89 (ESTIMATED)
# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
# BRAZIL CENTRAL '89 (ESTIMATED)
# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
# BRAZIL EAST PAULO, BRASILIA
# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
# BRAZIL PAULO, BRASILIA OCT 23,
# BRAZIL '88-FEB 11, '89
# BRAZIL (ESTIMATED)
# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
# BRAZIL DE NORONHA
# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
# BRAZIL (ESTIMATED)
# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Brazil 1987 max - Feb Sat<=14 2:00 0 S
Rule Brazil 1987 max - Oct Sat<=28 2:00 1:00 D
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Brazil/East -3:00 Brazil E%sT
Zone Brazil/West -4:00 Brazil W%sT
Zone Brazil/Acre -5:00 Brazil A%sT
Zone Brazil/DeNoronha -2:00 Brazil F%sT
###############################################################################
# Chile
# From Guy Harris:
# The OAG lists October 11, 1987 and March 12, 1988 as the starting and
# ending dates, giving them as "estimated date(s) based on previous year."
# From Bob Devine (January 28, 1988):
# Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977.
# Switch is at midnight. OAG is right.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Chile 1977 max - Oct Sun>=8 0:00 1:00 D
Rule Chile 1978 max - Mar Sun>=8 0:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Chile/Continental -4:00 Chile C%sT
Zone Chile/EasterIsland -6:00 Chile E%sT
###############################################################################
# Paraguay
# From Bob Devine (January 28, 1988):
# Paraguay: First day in October to last in March. Midnight switch??
# Since 1980.
# From U. S. Naval Observatory (January 19, 1989):
# PARAGUAY 4 H BEHIND UTC
# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
# From Arthur David Olson (January 21, 1989):
# Still don't know time of day when switch occurs. Punt.
###############################################################################
# Argentina
# From Bob Devine (January 28, 1988):
# Argentina: first Sunday in October to first Sunday in April since 1976.
# Double Summer time from 1969 to 1974. Switches at midnight.
# From U. S. Naval Observatory (January 19, 19889):
# ARGENTINA 3 H BEHIND UTC
# From Arthur David Olson (January 21, 1989):
# OAG, USNO and Bob have different data. Punt.
End of southamerica
echo file 'pacificnew' >&2
cat >'pacificnew' <<'End of pacificnew'
# @(#)pacificnew 7.1
# From Arthur David Olson (April 5, 1989):
# On April 5, 1989, the U. S. House of Representatives passed (238-154) a bill
# establishing "Pacific Presidential Election Time"; it has yet to be acted on
# by the Senate or signed into law by the President.
# You might want to change the "PE" (Presidential Election) below to
# "Q" (Quadrennial) to maintain three-character zone abbreviations.
# If you're really conservative, you might want to change it to "D".
# Avoid "L" (Leap Year), which won't be true in 2100.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Twilite 1989 max - Apr Sun>=1 2:00 1:00 D
Rule Twilite 1989 max uspres Oct lastSun 2:00 1:00 PE
Rule Twilite 1989 max uspres Nov Sun>=7 2:00 0 S
Rule Twilite 1989 max nonpres Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone US/Pacific-New -8:00 US P%sT 1989
-8:00 Twilite P%sT
End of pacificnew
echo file 'etcetera' >&2
cat >'etcetera' <<'End of etcetera'
# @(#)etcetera 7.1
# All of these are set up just so people can "zic -l" to a timezone
# that's right for their area, even if it doesn't have a name or dst rules
# (half hour zones are too much to bother with -- when someone asks!)
Zone GMT 0 - GMT
Zone GMT-12 -12 - GMT-1200
Zone GMT-11 -11 - GMT-1100
Zone GMT-10 -10 - GMT-1000
Zone GMT-9 -9 - GMT-0900
Zone GMT-8 -8 - GMT-0800
Zone GMT-7 -7 - GMT-0700
Zone GMT-6 -6 - GMT-0600
Zone GMT-5 -5 - GMT-0500
Zone GMT-4 -4 - GMT-0400
Zone GMT-3 -3 - GMT-0300
Zone GMT-2 -2 - GMT-0200
Zone GMT-1 -1 - GMT-0100
Zone GMT+1 1 - GMT+0100
Zone GMT+2 2 - GMT+0200
Zone GMT+3 3 - GMT+0300
Zone GMT+4 4 - GMT+0400
Zone GMT+5 5 - GMT+0500
Zone GMT+6 6 - GMT+0600
Zone GMT+7 7 - GMT+0700
Zone GMT+8 8 - GMT+0800
Zone GMT+9 9 - GMT+0900
Zone GMT+10 10 - GMT+1000
Zone GMT+11 11 - GMT+1100
Zone GMT+12 12 - GMT+1200
Zone GMT+13 13 - GMT+1300 # GMT+12 with DST
Link GMT UTC
Link GMT UCT
Link GMT Universal
Link GMT Greenwich
Link GMT Zulu
Link GMT GMT-0
Link GMT GMT+0
Link GMT GMT0
Link GMT+1 GMT1
Link GMT+2 GMT2
Link GMT+3 GMT3
Link GMT+4 GMT4
Link GMT+5 GMT5
Link GMT+6 GMT6
Link GMT+7 GMT7
Link GMT+8 GMT8
Link GMT+9 GMT9
Link GMT+10 GMT10
Link GMT+11 GMT11
Link GMT+12 GMT12
Link GMT+13 GMT13
End of etcetera
echo file 'factory' >&2
cat >'factory' <<'End of factory'
# @(#)factory 7.1
# For companies who don't want to put time zone specification in
# their installation procedures. When users run date, they'll get the message.
# Also useful for the "comp.sources" version.
# Zone NAME GMTOFF RULES FORMAT
Zone Factory 0 - "Local time zone must be set--see zic manual page"
End of factory
echo file 'systemv' >&2
cat >'systemv' <<'End of systemv'
# @(#)systemv 7.1
# Old rules, should the need arise.
# No attempt is made to handle Newfoundland, since it cannot be expressed
# using the System V "TZ" scheme (half-hour offset), or anything outside
# North America (no support for non-standard DST start/end dates), nor
# the change in the DST rules in the US in 1987 (can't split between
# Canada, with no changes, and the US)
#
# Be sure to compile this *without* leap second correction for true conformance.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
Rule SystemV min 1973 - Oct lastSun 2:00 0 S
Rule SystemV 1974 only - Jan 6 2:00 1:00 D
Rule SystemV 1974 only - Nov lastSun 2:00 0 S
Rule SystemV 1975 only - Feb 23 2:00 1:00 D
Rule SystemV 1975 only - Oct lastSun 2:00 0 S
Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
Rule SystemV 1976 max - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone SystemV/AST4ADT -4:00 SystemV A%sT
Zone SystemV/EST5EDT -5:00 SystemV E%sT
Zone SystemV/CST6CDT -6:00 SystemV C%sT
Zone SystemV/MST7MDT -7:00 SystemV M%sT
Zone SystemV/PST8PDT -8:00 SystemV P%sT
Zone SystemV/YST9YDT -9:00 SystemV Y%sT
Zone SystemV/AST4 -4:00 - AST
Zone SystemV/EST5 -5:00 - EST
Zone SystemV/CST6 -6:00 - CST
Zone SystemV/MST7 -7:00 - MST
Zone SystemV/PST8 -8:00 - PST
Zone SystemV/YST9 -9:00 - YST
Zone SystemV/HST10 -10:00 - HST
End of systemv
echo file 'leapseconds' >&2
cat >'leapseconds' <<'End of leapseconds'
# @(#)leapseconds 7.1
# Allowance for leapseconds added to each timezone file.
# The correction (+ or -) is made at the given time, so lines
# will typically look like:
# Leap YEAR MON DAY 23:59:60 + R/S
# or
# Leap YEAR MON DAY 23:59:59 - R/S
# If the leapsecond is Rolling (R) the given time is local time
# If the leapsecond is Stationary (S) the given time is GMT
# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
Leap 1972 Jun 30 23:59:60 + S
Leap 1972 Dec 31 23:59:60 + S
Leap 1973 Dec 31 23:59:60 + S
Leap 1974 Dec 31 23:59:60 + S
Leap 1975 Dec 31 23:59:60 + S
Leap 1976 Dec 31 23:59:60 + S
Leap 1977 Dec 31 23:59:60 + S
Leap 1978 Dec 31 23:59:60 + S
Leap 1979 Dec 31 23:59:60 + S
Leap 1981 Jun 30 23:59:60 + S
Leap 1982 Jun 30 23:59:60 + S
Leap 1983 Jun 30 23:59:60 + S
Leap 1985 Jun 30 23:59:60 + S
Leap 1987 Dec 31 23:59:60 + S
End of leapseconds
exit