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Texas timezone history
by Jules Descartes Sept. 8, 2011

Sept. 8, 2011

I have reviewed the Texas timezone history before 1970. I attach my result, which proposes two additional Texas zones America/Houston and Amerca/Amarillo. I think there is an error in the current tzdata/northamerica file regarding Texas. It claims that Texas follows America/Chicago. But this is not the case as Texas had no DST in 1936, as Chicago did. Please check my data and my typing, as I am a bad typist.

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A small contribution to California timezone history
by Alois Treindl Sept. 8, 2011

Sept. 8, 2011

Calfornia, the US state with the highest population, seems to be one of the most regular timezone history, well represented by zone America/Los_Angeles. One exception has however been brought to my attention, which I report here, as a contribution to the completion of pre-1970 timezone history. # Information published to the Public Domain. # Palm Springs suffered under the shadow of Mt. San Jacinto and # decided to go on DST from 1946 Nov 17 for 120 days, # ending 1947 Mar 17. # Source: Beaver Valley Times, 1946 Nov 8, and other newspapers. # # Palm Springs is at 116w33. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Palm_Springs -7:36:12 - LMT 1883 Nov 18 12:23:48 -8:00 US P%sT 1946 Nov 17 02:00 -7:00 - PDT 1947 Mar 17 02:00 -8:00 CA P%sT 1967 -8:00 US P%sT

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re: Texas, typing corrections
by Jules Descartes Sept. 8, 2011

Sept. 8, 2011

Sorry I had several typing errors in the last paragraph of the attached file. I attach a corrected copy.

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Russian Time Zone
by Wong Ren Sept. 8, 2011

Sept. 8, 2011

Hi, The latest 2011i tzdata does not have the Russian time change described by Alexander Krivenyshev: "DRAFT DECISION OF THE GOVERNMENT OF Russian Federation "On the composition of the territories that make up each time zone, and the procedure of calculation of time within time zones, and the Repeal of certain resolutions of the Government of the Russian Federation on August 8, 2011" On October 30, 2011, at 02:00 local time the following new time calculations will be applied: Irkutsk region will use the 5th Russian time zone (MSK +4) Republic of Sakha (Yakutia) will use the 7th Russian time zone (MSK +6) Primorsky Krai (Vladivostok) will use the 7th Russian time zone (MSK +6)" It is not clear to me what's the exact impact for these additional changes to the original proposal . I have summarized what I think are the changes in the table below, could someone verify? TimeZone Current At 2011 Oct 30 2:00s Description Asia/Irkustsk GMT+9 (MSK+5) GMT+8 (MSK+4) Asia/Valdivostok GMT+11 (MSK+7) GMT+10(MSK+6) Asia/Yakulsk GMT+10 (MSK+6) GMT+10(MSK+6) No change. Republic of Sakha (Yakutia) ? Asia/Sakalin GMT+11 (MSK+7) GMT+10(MSK+6 Republic of Sakha (Yakutia) ? Asia/Magadan GMT+12 (MSK+8) GMT+10 (MSK+6) Republic of Sakha (Yakutia) ? Asia/Kamachatka GMT+12 (MSK+8) GMT+10 (MSK+6) Republic of Sakha (Yakutia) ? Asia/Anadyr GMT+12 (MSK+8) GMT+10 (MSK+6) Republic of Sakha (Yakutia) ? Essentially, GMT+9, GMT+11 and GMT+12 are entirely eliminated. Please confirm the above changes. Also based on the tzdata2011i, would the following changes apply? 2186d2185 < 8:00 - IRKT 2011 Oct 30 2:00s 2225,2226d2223 < 10:00 - VLAT 2011 Oct 30 2:00s < 2238,2239d2234 < 10:00 - SAKT 2011 Oct 30 2:00s < 2254d2248 < 10:00 - MAGT 2011 Oct 30 2:00s 2267d2260 < 10:00 - PETT 2011 Oct 30 2:00s 2278d2270 < 10:00 - ANAT 2011 Oct 30 2:00s ________________________________ "This e-mail message may contain confidential, commercial or privileged information that constitutes proprietary information of Comverse Technology or its subsidiaries. If you are not the intended recipient of this message, you are hereby notified that any review, use or distribution of this information is absolutely prohibited and we request that you delete all copies and contact us by e-mailing to: security(a)comverse.com. Thank You."

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Alabama timezone history
by Jules Descartes Sept. 6, 2011

Sept. 6, 2011

I have started reviewing pre-1970 US timezone history. The information is so complex that it is best approached state by state. I have started alphabetically with Alabama, but will probably continue with some mixture like - most populous states first - simplest states first For Alabama history my first draft proposes ten zones. This is more detailed than Shanks, wo distinguished seven areas. It is only a first step. Newspaper archive research (sadly) reveals that there are far more complex details involved in a complete history, and many questions about extension of zones can probably never be answered because there are not enough precise records. I have made a map, together with the help of colleagues, and uploaded it to wikimedia, as I am not sure whether image files work in this mailing list. Certainly we save bandwidth, as in the old times. License question: For now I have decided to place my work under the widest possible Creative Commons. This differs from the Public Domain license only in so far, as sources need to be quoted. Aside of that the use of the information is free, also within commercial projects of any kind. Please check and proof read the proposed zones. I am a bad typist.

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Gaza and West Bank back to daylight saving time after pause
by Steffen Thorsen Sept. 6, 2011

Sept. 6, 2011

Gaza and the West Bank did go back to standard time in the beginning of August, and will now enter daylight saving time again on 2011-08-30 00:00 (so two periods of DST in 2011). The pause was because of Ramadan. http://www.maannews.net/eng/ViewDetails.aspx?ID=416217 Additional info: http://www.timeanddate.com/news/time/palestine-dst-2011.html Best regards, Steffen Thorsen - timeanddate.com

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Thu moi den du hoi nghi nong nghiep tai tinh Kiet Lam
by Luong Van Hoa Sept. 5, 2011

Sept. 5, 2011

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proposed time zone package changes (Samoa, Kenya, Uganda, Tanzania)
by Arthur David Olson Sept. 3, 2011

Sept. 3, 2011

Below find proposed time zone package changes; the executive summary: africa Four instances of 2:44:45 changed to 2:45 (one in a comment, one each in zones Africa/Dar_es_Salaam, Africa/Kampala, Africa/Nairobi) (thanks to Jules Descartes) australasia Samoa uses DST in 2011-2012 (thanks to Laupue Raymond Hughes) The Samoa changes affect time stamps beginning later this month. I'm holding off on West Bank and Gaza changes pending further information and feedback. If no problems are found, these changes will show up on the ftp site on 2011-09-12. --ado diff -r -c old/africa new/africa *** old/africa Wed Aug 17 13:47:14 2011 --- new/africa Sat Sep 3 08:53:28 2011 *************** *** 1,5 **** # <pre> ! # @(#)africa 8.32 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)africa 8.33 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 58,64 **** # I invented the following abbreviations; corrections are welcome! # 2:00 WAST West Africa Summer Time # 2:30 BEAT British East Africa Time (no longer used) ! # 2:44:45 BEAUT British East Africa Unified Time (no longer used) # 3:00 CAST Central Africa Summer Time (no longer used) # 3:00 SAST South Africa Summer Time (no longer used) # 3:00 EAT East Africa Time --- 58,64 ---- # I invented the following abbreviations; corrections are welcome! # 2:00 WAST West Africa Summer Time # 2:30 BEAT British East Africa Time (no longer used) ! # 2:45 BEAUT British East Africa Unified Time (no longer used) # 3:00 CAST Central Africa Summer Time (no longer used) # 3:00 SAST South Africa Summer Time (no longer used) # 3:00 EAT East Africa Time *************** *** 396,402 **** Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - BEAT 1940 ! 2:44:45 - BEAUT 1960 3:00 - EAT # Lesotho --- 396,402 ---- Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - BEAT 1940 ! 2:45 - BEAUT 1960 3:00 - EAT # Lesotho *************** *** 971,977 **** # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931 3:00 - EAT 1948 ! 2:44:45 - BEAUT 1961 3:00 - EAT # Togo --- 971,977 ---- # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931 3:00 - EAT 1948 ! 2:45 - BEAUT 1961 3:00 - EAT # Togo *************** *** 1097,1103 **** Zone Africa/Kampala 2:09:40 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - BEAT 1948 ! 2:44:45 - BEAUT 1957 3:00 - EAT # Zambia --- 1097,1103 ---- Zone Africa/Kampala 2:09:40 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - BEAT 1948 ! 2:45 - BEAUT 1957 3:00 - EAT # Zambia diff -r -c old/australasia new/australasia *** old/australasia Wed Aug 17 17:27:48 2011 --- new/australasia Sat Sep 3 08:50:46 2011 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.25 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.26 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 499,505 **** # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> ! # From Raymond Hughes (2010-10-07): # Please see # <a href="http://www.mcil.gov.ws"> # http://www.mcil.gov.ws --- 499,505 ---- # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> ! # From Laupue Raymond Hughes (2010-10-07): # Please see # <a href="http://www.mcil.gov.ws"> # http://www.mcil.gov.ws *************** *** 509,515 **** # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks # backwards from 1:00am to 12:00am" ! # From Raymond Hughes (2011-03-07) # I believe this will be posted shortly on the website # <a href="http://www.mcil.gov.ws"> # www.mcil.gov.ws --- 509,515 ---- # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks # backwards from 1:00am to 12:00am" ! # From Laupue Raymond Hughes (2011-03-07): # I believe this will be posted shortly on the website # <a href="http://www.mcil.gov.ws"> # www.mcil.gov.ws *************** *** 573,584 **** # Act affects the provisions of the Daylight Saving Act 2009, except that # it defines Samoa standard time.... Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 -11:00 1:00 WSDT 2011 Apr 2 4:00 ! -11:00 - WST 2011 Dec 30 13:00 - WST # Solomon Is --- 573,601 ---- # Act affects the provisions of the Daylight Saving Act 2009, except that # it defines Samoa standard time.... + # From Laupue Raymond Hughes (2011-09-02): + # <a href="http://www.mcil.gov.ws/mcil_publications.html"> + # http://www.mcil.gov.ws/mcil_publications.html + # </a> + # + # here is the official website publication for Samoa DST and dateline change + # + # DST + # Year End Time Start Time + # 2011 - - - - - - 24 September 3:00am to 4:00am + # 2012 01 April 4:00am to 3:00am - - - - - - + # + # Dateline Change skip Friday 30th Dec 2011 + # Thursday 29th December 2011 23:59:59 Hours + # Saturday 31st December 2011 00:00:00 Hours Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 -11:00 1:00 WSDT 2011 Apr 2 4:00 ! -11:00 - WST 2011 Sep 24 3:00 ! -11:00 1:00 WSDT 2011 Dec 30 ! 13:00 1:00 WSDT 2012 Apr 1 4:00 13:00 - WST # Solomon Is

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RE: proposed time zone package changes (South Sudan, Samoa, Newfoundland...)
by Arthur David Olson Sept. 3, 2011

Sept. 3, 2011

As a reminder, here are the changes proposed last week: africa Add Africa/Juba (South Sudan) zone. australasia Samoa skips over 2011-12-30 (thanks to David Zuelke and Mark Sim-Smith). europe Use KALT as abbreviation for Europe/Kalinigrad from spring 2011 forward (thanks to Yoshito Umaoka). northamerica Newfoundland changes time of day for DST start and end to 2:00 a.m. starting fall 2011 and forward (thanks to Michael Pelley). Change America/Resolute use of EST to 2006-2007 only (thanks to Chris Walton). Assume Metlakatla abandoned use of daylight saving as a result of its 1983 vote. Avoid unnecessary use of US rule in America/Honolulu; fix two typos in America/Honolulu comments. iso3166.tab Add SS (South Sudan) entry. zone.tab Change America/Resolute entry to Central Standard Time. (thanks to Chris Walton). Add SS (South Sudan, Africa/Juba) entry. And here are additional changes being proposed today: Makefile Remove itca.jpg from distribution (thanks to Paul Eggert) australasia Remove unneeded "+" from "+13:00" in Samoa entry (thanks to Tim Parenti) iso3166.tab Fix comment regarding ISO 3166 (thanks to Philip Newton) newstrftime.3 Remove incorrect status comment (thanks to Paul Eggert) northamerica Adjust America/Goose_Bay as well as America/St_Johns from fall 2011 forward (thanks to Chris Walton) I expect to update the ftp versions on 2011-08-29. --ado diff -r -c old/Makefile new/Makefile *** old/Makefile Thu Apr 14 12:42:47 2011 --- new/Makefile Wed Aug 24 07:46:28 2011 *************** *** 1,5 **** # <pre> ! # @(#)Makefile 8.10 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)Makefile 8.11 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 270,276 **** DATA= $(YDATA) $(NDATA) $(SDATA) $(TABDATA) leapseconds yearistype.sh WEB_PAGES= tz-art.htm tz-link.htm MISC= usno1988 usno1989 usno1989a usno1995 usno1997 usno1998 \ ! itca.jpg $(WEB_PAGES) checktab.awk workman.sh \ zoneinfo2tdf.pl ENCHILADA= $(DOCS) $(SOURCES) $(DATA) $(MISC) --- 270,276 ---- DATA= $(YDATA) $(NDATA) $(SDATA) $(TABDATA) leapseconds yearistype.sh WEB_PAGES= tz-art.htm tz-link.htm MISC= usno1988 usno1989 usno1989a usno1995 usno1997 usno1998 \ ! $(WEB_PAGES) checktab.awk workman.sh \ zoneinfo2tdf.pl ENCHILADA= $(DOCS) $(SOURCES) $(DATA) $(MISC) diff -r -c old/africa new/africa *** old/africa Wed Jun 15 06:43:13 2011 --- new/africa Wed Aug 17 13:47:14 2011 *************** *** 1,5 **** # <pre> ! # @(#)africa 8.31 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)africa 8.32 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 956,961 **** --- 956,966 ---- Zone Africa/Khartoum 2:10:08 - LMT 1931 2:00 Sudan CA%sT 2000 Jan 15 12:00 3:00 - EAT + + # South Sudan + Zone Africa/Juba 2:06:24 - LMT 1931 + 2:00 Sudan CA%sT 2000 Jan 15 12:00 + 3:00 - EAT # Swaziland # Zone NAME GMTOFF RULES FORMAT [UNTIL] diff -r -c old/australasia new/australasia *** old/australasia Wed Jun 15 06:53:04 2011 --- new/australasia Wed Aug 17 17:27:48 2011 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.23 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.25 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 529,540 **** # Margaret Fruean ACTING CHIEF EXECUTIVE OFFICER MINISTRY OF COMMERCE, # INDUSTRY AND LABOUR 28th February 2011 Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 -11:00 1:00 WSDT 2011 Apr 2 4:00 ! -11:00 - WST # Solomon Is # excludes Bougainville, for which see Papua New Guinea --- 529,585 ---- # Margaret Fruean ACTING CHIEF EXECUTIVE OFFICER MINISTRY OF COMMERCE, # INDUSTRY AND LABOUR 28th February 2011 + # From David Zuelke (2011-05-09): + # Subject: Samoa to move timezone from east to west of international date line + # + # <a href="http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963"> + # http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963 + # </a> + + # From Mark Sim-Smith (2011-08-17): + # I have been in contact with Leilani Tuala Warren from the Samoa Law + # Reform Commission, and she has sent me a copy of the Bill that she + # confirmed has been passed...Most of the sections are about maps rather + # than the time zone change, but I'll paste the relevant bits below. But + # the essence is that at midnight 29 Dec (UTC-11 I suppose), Samoa + # changes from UTC-11 to UTC+13: + # + # International Date Line Bill 2011 + # + # AN ACT to provide for the change to standard time in Samoa and to make + # consequential amendments to the position of the International Date + # Line, and for related purposes. + # + # BE IT ENACTED by the Legislative Assembly of Samoa in Parliament + # assembled as follows: + # + # 1. Short title and commencement-(1) This Act may be cited as the + # International Date Line Act 2011. (2) Except for section 5(3) this Act + # commences at 12 o'clock midnight, on Thursday 29th December 2011. (3) + # Section 5(3) commences on the date of assent by the Head of State. + # + # [snip] + # + # 3. Interpretation - [snip] "Samoa standard time" in this Act and any + # other statute of Samoa which refers to 'Samoa standard time' means the + # time 13 hours in advance of Co-ordinated Universal Time. + # + # 4. Samoa standard time - (1) Upon the commencement of this Act, Samoa + # standard time shall be set at 13 hours in advance of Co-ordinated + # Universal Time for the whole of Samoa. (2) All references to Samoa's + # time zone and to Samoa standard time in Samoa in all legislation and + # instruments after the commencement of this Act shall be references to + # Samoa standard time as provided for in this Act. (3) Nothing in this + # Act affects the provisions of the Daylight Saving Act 2009, except that + # it defines Samoa standard time.... + Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 -11:00 1:00 WSDT 2011 Apr 2 4:00 ! -11:00 - WST 2011 Dec 30 ! 13:00 - WST # Solomon Is # excludes Bougainville, for which see Papua New Guinea diff -r -c old/europe new/europe *** old/europe Wed Jun 15 07:31:00 2011 --- new/europe Wed Aug 17 12:52:01 2011 *************** *** 1,5 **** # <pre> ! # @(#)europe 8.33 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)europe 8.34 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 2034,2040 **** 2:00 Poland CE%sT 1946 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 Russia EE%sT 2011 Mar 27 2:00s ! 3:00 - EET # # From Oscar van Vlijmen (2001-08-25): [This region consists of] # Respublika Adygeya, Arkhangel'skaya oblast', --- 2034,2040 ---- 2:00 Poland CE%sT 1946 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 Russia EE%sT 2011 Mar 27 2:00s ! 3:00 - KALT # # From Oscar van Vlijmen (2001-08-25): [This region consists of] # Respublika Adygeya, Arkhangel'skaya oblast', diff -r -c old/iso3166.tab new/iso3166.tab *** old/iso3166.tab Wed Jun 15 18:41:48 2011 --- new/iso3166.tab Wed Aug 17 17:26:53 2011 *************** *** 1,5 **** # <pre> ! # @(#)iso3166.tab 8.9 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # ISO 3166 alpha-2 country codes --- 1,5 ---- # <pre> ! # @(#)iso3166.tab 8.11 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # ISO 3166 alpha-2 country codes *************** *** 21,29 **** # # Lines beginning with `#' are comments. # ! # From Arthur David Olson (2011-06-15): ! # Resynchronized today with the ISO3116 site ! # (deleting AN and adding BQ, CW, and SX). # #country- #code country name --- 21,28 ---- # # Lines beginning with `#' are comments. # ! # From Arthur David Olson (2011-08-17): ! # Resynchronized today with the ISO 3166 site (adding SS for South Sudan). # #country- #code country name *************** *** 234,239 **** --- 233,239 ---- SN Senegal SO Somalia SR Suriname + SS South Sudan ST Sao Tome & Principe SV El Salvador SX Sint Maarten Only in old: itca.jpg diff -r -c old/newstrftime.3 new/newstrftime.3 *** old/newstrftime.3 Thu Dec 16 12:24:35 2010 --- new/newstrftime.3 Wed Aug 24 07:48:33 2011 *************** *** 227,232 **** newtzset(3), time(2), tzfile(5) ! .\" @(#)newstrftime.3 8.2 ! .\" This file is in the public domain, so clarified as of ! .\" 2009-05-17 by Arthur David Olson. --- 227,230 ---- newtzset(3), time(2), tzfile(5) ! .\" @(#)newstrftime.3 8.3 diff -r -c old/northamerica new/northamerica *** old/northamerica Wed Jun 15 07:05:20 2011 --- new/northamerica Wed Aug 17 17:33:36 2011 *************** *** 1,5 **** # <pre> ! # @(#)northamerica 8.42 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)northamerica 8.48 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 468,473 **** --- 468,477 ---- # own time. I asked about daylight saving; they said it wasn't used. I # did not inquire about practices in the past. + # From Arthur David Olson (2011-08-17): + # For lack of better information, assume that Metlakatla's + # abandonment of use of daylight saving resulted from the 1983 vote. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Juneau 15:02:19 - LMT 1867 Oct 18 -8:57:41 - LMT 1900 Aug 20 12:00 *************** *** 493,499 **** -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 ! -8:00 US MeST Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -9:18:55 - LMT 1900 Aug 20 12:00 -9:00 - YST 1942 --- 497,503 ---- -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 ! -8:00 - MeST Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -9:18:55 - LMT 1900 Aug 20 12:00 -9:00 - YST 1942 *************** *** 593,600 **** -10:30 - HST 1933 Apr 30 2:00 #Laws 1933 -10:30 1:00 HDT 1933 May 21 12:00 #Laws 1933+12 -10:30 - HST 1942 Feb 09 2:00 #Schmitt&Cox+2 ! -10:30 1:00 HDT 1945 Sep 30 2:00 #Schmitt&Fox+2 ! -10:30 US H%sT 1947 Jun 8 2:00 #Schmitt&Fox+2 -10:00 - HST # Now we turn to US areas that have diverged from the consensus since 1970. --- 597,604 ---- -10:30 - HST 1933 Apr 30 2:00 #Laws 1933 -10:30 1:00 HDT 1933 May 21 12:00 #Laws 1933+12 -10:30 - HST 1942 Feb 09 2:00 #Schmitt&Cox+2 ! -10:30 1:00 HDT 1945 Sep 30 2:00 #Schmitt&Cox+2 ! -10:30 - HST 1947 Jun 8 2:00 #Schmitt&Cox+2 -10:00 - HST # Now we turn to US areas that have diverged from the consensus since 1970. *************** *** 1163,1174 **** # From Paul Eggert (2000-10-02): # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches # at 00:01 local time. For now, assume it started in 1987. Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D ! Rule StJohns 2007 max - Mar Sun>=8 0:01 1:00 D ! Rule StJohns 2007 max - Nov Sun>=1 0:01 0 S # # St John's has an apostrophe, but Posix file names can't have apostrophes. # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 1167,1205 ---- # From Paul Eggert (2000-10-02): # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches # at 00:01 local time. For now, assume it started in 1987. + + # From Michael Pelley (2011-08-05): + # The Government of Newfoundland and Labrador has pending changes to + # modify the hour for daylight savings time to come into effect in + # November 2011. This modification would change the time from 12:01AM to + # 2:00AM on the dates of the switches of Daylight Savings Time to/from + # Standard Time. + # + # As a matter of reference, in Canada provinces have the authority of + # setting time zone information. The legislation has passed our + # legislative body (The House of Assembly) and is awaiting the + # proclamation to come into effect. You may find this information at: + # <a href="http://www.assembly.nl.ca/legislation/sr/lists/Proclamation.htm"> + # http://www.assembly.nl.ca/legislation/sr/lists/Proclamation.htm + # </a> + # and + # search within that web page for Standard Time (Amendment) Act. The Act + # may be found at: + # <a href="http://www.assembly.nl.ca/business/bills/Bill1106.htm"> + # http://www.assembly.nl.ca/business/bills/Bill1106.htm + # </a> + # ... + # MICHAEL PELLEY | Manager of Enterprise Architecture - Solution Delivery + # Office of the Chief Information Officer Executive Council Government of + # Newfoundland & Labrador P.O. Box 8700, 40 Higgins Line, St. John's NL + # A1B 4J6 + Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D ! Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D ! Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S # # St John's has an apostrophe, but Posix file names can't have apostrophes. # Zone NAME GMTOFF RULES FORMAT [UNTIL] *************** *** 1178,1184 **** -3:30:52 StJohns N%sT 1935 Mar 30 -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 ! -3:30 StJohns N%sT # most of east Labrador --- 1209,1216 ---- -3:30:52 StJohns N%sT 1935 Mar 30 -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 ! -3:30 StJohns N%sT 2011 Nov ! -3:30 Canada N%sT # most of east Labrador *************** *** 1192,1198 **** -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 -3:30 StJohns N%sT 1966 Mar 15 2:00 ! -4:00 StJohns A%sT # west Labrador, Nova Scotia, Prince Edward I --- 1224,1231 ---- -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 -3:30 StJohns N%sT 1966 Mar 15 2:00 ! -4:00 StJohns A%sT 2011 Nov ! -4:00 Canada A%sT # west Labrador, Nova Scotia, Prince Edward I *************** *** 1924,1944 **** # daylight saving.... # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html ! # From Chris Walton (2007-03-14): ! # Today I phoned the "hamlet office" to find out what Resolute was doing with ! # its clocks. # ! # The individual that answered the phone confirmed that the clocks did not ! # move at the end of daylight saving on October 29/2006. He also told me that ! # the clocks did not move this past weekend (March 11/2007).... - # From Chris Walton (2008-11-13): - # ...the residents of Resolute believe that they are changing "time zones" - # twice a year. In winter months, local time is qualified with "Eastern - # Time" which is really "Eastern Standard Time (UTC-5)". In summer - # months, local time is qualified with "Central Time" which is really - # "Central Daylight Time (UTC-5)"... - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S --- 1957,2026 ---- # daylight saving.... # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html ! # From Chris Walton (2011-03-21): ! # Back in 2007 I initiated the creation of a new "zone file" for Resolute ! # Bay. Resolute Bay is a small community located about 900km north of ! # the Arctic Circle. The zone file was required because Resolute Bay had ! # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007. # ! # According to new information which I received last week, Resolute Bay ! # went back to using UTC-6 in the winter of 2007-2008... ! # ! # On March 11/2007 most of Canada went onto daylight saving. On March ! # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I ! # talked to somebody that was both knowledgeable and helpful. I was able ! # to confirm that Resolute Bay was still operating on UTC-5. It was ! # explained to me that Resolute Bay had been on the Eastern Time zone ! # (EST) in the winter, and was now back on the Central Time zone (CDT). ! # i.e. the time zone had changed twice in the last year but the clocks ! # had not moved. The residents had to know which time zone they were in ! # so they could follow the correct TV schedule... ! # ! # On Nov 02/2008 most of Canada went onto standard time. On Nov 03/2008 I ! # phoned the Resolute Bay hamlet office...[D]ue to the challenging nature ! # of the phone call, I decided to seek out an alternate source of ! # information. I found an e-mail address for somebody by the name of ! # Stephanie Adams whose job was listed as "Inns North Support Officer for ! # Arctic Co-operatives." I was under the impression that Stephanie lived ! # and worked in Resolute Bay... ! # ! # On March 14/2011 I phoned the hamlet office again. I was told that ! # Resolute Bay had been using Central Standard Time over the winter of ! # 2010-2011 and that the clocks had therefore been moved one hour ahead ! # on March 13/2011. The person I talked to was aware that Resolute Bay ! # had previously experimented with Eastern Standard Time but he could not ! # tell me when the practice had stopped. ! # ! # On March 17/2011 I searched the Web to find an e-mail address of ! # somebody that might be able to tell me exactly when Resolute Bay went ! # off Eastern Standard Time. I stumbled on the name "Aziz Kheraj." Aziz ! # used to be the mayor of Resolute Bay and he apparently owns half the ! # businesses including "South Camp Inn." This website has some info on ! # Aziz: ! # <a href="http://www.uphere.ca/node/493"> ! # http://www.uphere.ca/node/493 ! # </a> ! # ! # I sent Aziz an e-mail asking when Resolute Bay had stopped using ! # Eastern Standard Time. ! # ! # Aziz responded quickly with this: "hi, The time was not changed for the ! # 1 year only, the following year, the community went back to the old way ! # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in ! # the winter Zulu plus 6 hrs" ! # ! # This of course conflicted with everything I had ascertained in November 2008. ! # ! # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz ! # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You ! # may want to check with the weather office in Resolute Bay or do a ! # search on the weather through Env. Canada. web site" ! # ! # If I had realized the Stephanie did not live in Resolute Bay I would ! # never have contacted her. I now believe that all the information I ! # obtained in November 2008 should be ignored... ! # I apologize for reporting incorrect information in 2008. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S *************** *** 1965,1978 **** -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 Canada E%sT # aka Qausuittuq - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Resolute 2006 max - Nov Sun>=1 2:00 0 ES - Rule Resolute 2007 max - Mar Sun>=8 2:00 0 CD Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 -5:00 - EST 2001 Apr 1 3:00 -6:00 Canada C%sT 2006 Oct 29 2:00 ! -5:00 Resolute %sT # aka Kangiqiniq Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 --- 2047,2058 ---- -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 Canada E%sT # aka Qausuittuq Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 -5:00 - EST 2001 Apr 1 3:00 -6:00 Canada C%sT 2006 Oct 29 2:00 ! -5:00 - EST 2007 Mar 11 3:00 ! -6:00 Canada C%sT # aka Kangiqiniq Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 diff -r -c old/zone.tab new/zone.tab *** old/zone.tab Wed Jun 15 18:33:42 2011 --- new/zone.tab Wed Aug 17 13:36:43 2011 *************** *** 1,5 **** # <pre> ! # @(#)zone.tab 8.45 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # --- 1,5 ---- # <pre> ! # @(#)zone.tab 8.47 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # *************** *** 120,126 **** CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario CA +6344-06828 America/Iqaluit Eastern Time - east Nunavut - most locations CA +6608-06544 America/Pangnirtung Eastern Time - Pangnirtung, Nunavut ! CA +744144-0944945 America/Resolute Eastern Standard Time - Resolute, Nunavut CA +484531-0913718 America/Atikokan Eastern Standard Time - Atikokan, Ontario and Southampton I, Nunavut CA +624900-0920459 America/Rankin_Inlet Central Time - central Nunavut CA +4953-09709 America/Winnipeg Central Time - Manitoba & west Ontario --- 120,126 ---- CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario CA +6344-06828 America/Iqaluit Eastern Time - east Nunavut - most locations CA +6608-06544 America/Pangnirtung Eastern Time - Pangnirtung, Nunavut ! CA +744144-0944945 America/Resolute Central Standard Time - Resolute, Nunavut CA +484531-0913718 America/Atikokan Eastern Standard Time - Atikokan, Ontario and Southampton I, Nunavut CA +624900-0920459 America/Rankin_Inlet Central Time - central Nunavut CA +4953-09709 America/Winnipeg Central Time - Manitoba & west Ontario *************** *** 361,366 **** --- 361,367 ---- SN +1440-01726 Africa/Dakar SO +0204+04522 Africa/Mogadishu SR +0550-05510 America/Paramaribo + SS +0451+03136 Africa/Juba ST +0020+00644 Africa/Sao_Tome SV +1342-08912 America/El_Salvador SX +180305-0630250 America/Lower_Princes

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Tonga standard time changes, attn. Paul Eggert
by Alois Treindl Sept. 2, 2011

Sept. 2, 2011

attention Paul Eggert: I am reading through the comments for zone Pacific/Tonga and there you write on 2006-03-22: ... go with Mundell where "Mundell" means his article by Don Mundell http://www.tongatapu.net.to/tonga/homeland/timebegins.htm In reading this article, I cannot see where he places the transition from standard meridian 185°e (12:20h) to 195°e (13:00h) into the year 1999. What I read is that he talks about the change in New Zealand timezone from meridian 172.5°e (11:30h) to 180°e (12:00h) on 1946-jan-01, and that the Crown prince Tungi, wanted to maintain the 50 minutes difference to New Zealand. But it appears that no change was made then, in 1946, and Tonga now had only a 20 min difference to New Zealand. I cannot see how you derive a change in 1999 from what Mundell writes. Please clarify. Shanks has this change in 1968, but as usual he gives no source. PS: does anyone know of a way to get access to old IATA SSIM manuals? I rember those being voluminous books which travel agents used to look up flight schedules. For several years, I used to collect older copies of these manuals from a travel agent and use them to look up timezones, as they were documented for each airport, together with begin/end dates for DST if such a change fell into the two-month period a manual covered. I had a collection of many years from the late 1970ies and the 1980ies, but threw them out when I got hold of Shanks' books. Now I would love to check some information in them again, but so far have been unable to find where copies are held in an archive.

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