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 # . . . # 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 # ... # [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 # ... # # 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