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Turkey: Timezone change date delayed for one day
by Gökdeniz Karadağ March 10, 2011

March 10, 2011

According to the articles linked below, Turkey will change into summer time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27. This change is due to a nationwide exam on 27th. http://www.worldbulletin.net/?aType=haber&ArticleID=70872 Turkish: http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373 -- Gökdeniz Karadağ

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proposed time zone package changes (Cuba, Samoa, et al.)
by Arthur David Olson March 9, 2011

March 9, 2011

Below are proposed changes to the time zone package; here's a summary: * australasia Change end of DST in Samoa in 2011. Thanks to Raymond Hughes for information on the change. * etcetera Remove obsolete material on angle brackets in TZ envirnoment variable. * northamerica Change start of DST in Cuba in 2011. Thanks to Steffen Thorsen for the first report of the change. * zic.c Add curly brackets to squelch a gcc warning message. Since imminent time stamps in Cuba and Samoa are affected, we'll do the short turnaround dance; expect these changes on the ftp site on 2011-03-14 unless problems are found. --ado diff -r -c old/australasia new/australasia *** old/australasia Wed Jan 12 11:03:44 2011 --- new/australasia Wed Mar 9 14:38:29 2011 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.22 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.23 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 509,519 **** # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks # backwards from 1:00am to 12:00am" 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 3 1:00 -11:00 - WST # Solomon Is --- 509,539 ---- # 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 + # </a> + # + # PUBLIC NOTICE ON DAYLIGHT SAVING TIME + # + # Pursuant to the Daylight Saving Act 2009 and Cabinets decision, + # businesses and the general public are hereby advised that daylight + # saving time is on the first Saturday of April 2011 (02/04/11). + # + # The public is therefore advised that when the standard time strikes + # the hour of four oclock (4.00am or 0400 Hours) on the 2nd April 2011, + # then all instruments used to measure standard time are to be + # adjusted/changed to three oclock (3:00am or 0300Hrs). + # + # 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 diff -r -c old/etcetera new/etcetera *** old/etcetera Thu Dec 16 12:24:20 2010 --- new/etcetera Wed Mar 9 14:27:36 2011 *************** *** 1,5 **** # <pre> ! # @(#)etcetera 8.2 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)etcetera 8.3 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 36,43 **** # (i.e. west of Greenwich) even though many people would expect it to # mean 4 hours ahead of UTC (i.e. east of Greenwich). # ! # In the draft 5 of POSIX 1003.1-200x, the angle bracket notation ! # (which is not yet supported by the tz code) allows for # TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to # ISO 8601 you can use TZ='<-0400>+4'. Thus the commonly-expected # offset is kept within the angle bracket (and is used for display) --- 36,42 ---- # (i.e. west of Greenwich) even though many people would expect it to # mean 4 hours ahead of UTC (i.e. east of Greenwich). # ! # In the draft 5 of POSIX 1003.1-200x, the angle bracket notation allows for # TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to # ISO 8601 you can use TZ='<-0400>+4'. Thus the commonly-expected # offset is kept within the angle bracket (and is used for display) diff -r -c old/northamerica new/northamerica *** old/northamerica Wed Feb 9 14:00:33 2011 --- new/northamerica Wed Mar 9 14:45:23 2011 *************** *** 1,5 **** # <pre> ! # @(#)northamerica 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)northamerica 8.42 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 2606,2611 **** --- 2606,2626 ---- # the time was announced as "diez cinco"--the same time as here, indicating # that has indeed switched to DST. Assume second Sunday from 2009 forward. + # From Steffen Thorsen (2011-03-08): + # Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00 + # this year. Nothing about the end date known so far (if that has + # changed at all). + # + # Source: + # <a href="http://granma.co.cu/2011/03/08/nacional/artic01.html"> + # http://granma.co.cu/2011/03/08/nacional/artic01.html + # </a> + # + # Our info: + # <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html"> + # http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html + # </a> + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D Rule Cuba 1928 only - Oct 10 0:00 0 S *************** *** 2639,2645 **** Rule Cuba 2006 max - Oct lastSun 0:00s 0 S Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D Rule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D ! Rule Cuba 2009 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 --- 2654,2662 ---- Rule Cuba 2006 max - Oct lastSun 0:00s 0 S Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D Rule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D ! Rule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D ! Rule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D ! Rule Cuba 2012 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 diff -r -c old/zic.c new/zic.c *** old/zic.c Thu Dec 16 12:24:13 2010 --- new/zic.c Wed Mar 9 14:41:27 2011 *************** *** 3,9 **** ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.24"; #include "private.h" #include "locale.h" --- 3,9 ---- ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.25"; #include "private.h" #include "locale.h" *************** *** 1639,1648 **** mrudst = types[i]; else mrustd = types[i]; for (i = 0; i < typecnt; ++i) ! if (writetype[i]) if (isdsts[i]) hidst = i; else histd = i; if (hidst >= 0 && mrudst >= 0 && hidst != mrudst && gmtoffs[hidst] != gmtoffs[mrudst]) { isdsts[mrudst] = -1; --- 1639,1649 ---- mrudst = types[i]; else mrustd = types[i]; for (i = 0; i < typecnt; ++i) ! if (writetype[i]) { if (isdsts[i]) hidst = i; else histd = i; + } if (hidst >= 0 && mrudst >= 0 && hidst != mrudst && gmtoffs[hidst] != gmtoffs[mrudst]) { isdsts[mrudst] = -1;

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Cuba to start DST one week later than usual
by Steffen Thorsen March 9, 2011

March 9, 2011

Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00 this year. Nothing about the end date known so far (if that has changed at all). Source: http://granma.co.cu/2011/03/08/nacional/artic01.html Our info: http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html Best regards, Steffen Thorsen - timeanddate.com

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Samoa Daylight Savings End has just been amended again
by Raymond Hughes March 8, 2011

March 8, 2011

I believe this will be posted shortly on the website www.mcil.gov.ws. PUBLIC NOTICE ON DAYLIGHT SAVING TIME Pursuant to the Daylight Saving Act 2009 and Cabinet’s decision, businesses and the general public are hereby advised that daylight saving time is on the first Saturday of April 2011 (02/04/11). The public is therefore advised that when the standard time strikes the hour of four o’clock (4.00am or 0400 Hours) on the 2nd April 2011, then all instruments used to measure standard time are to be adjusted/changed to three o’clock (3:00am or 0300Hrs). Margaret Fruean ACTING CHIEF EXECUTIVE OFFICER MINISTRY OF COMMERCE, INDUSTRY AND LABOUR 28th February 2011

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2011c
by Olson, Arthur David (NIH/NCI) [E] March 7, 2011

March 7, 2011

The files... ftp://elsie.nci.nih.gov/pub/tzcode2011c.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2011c.tar.gz ...are now available; these reflect the changes circulated last week on the time zone mailing list. These do affect current time stamps in Chile and Annette Island, Canada. --ado

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Belarus may cancel the transition to the Winter time in the autumn of 2011
by Alexander Krivenyshev March 7, 2011

March 7, 2011

Belarus may cancel the transition to the Winter time in the autumn of 2011- same as Russia plans. Belarus business portal link (in Russian): http://bel.biz/news/38106.html or http://www.worldtimezone.com/dst_news/dst_news_belarus01.html "State Metrology Institute of Belarus has decided to recommend to the Government to cancel the transition to the Winter time in the autumn of 2011." Alexander Krivenyshev, http://www.worldtimezone.com

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Dry Tortugas is Central or Eastern Time?
by Aaron Brown March 4, 2011

March 4, 2011

I just went to Dry Tortugas National Park last weekend, about 70 miles west of Key West. Before going, I had noticed that wikipedia (http://en.wikipedia.org/wiki/Eastern_Time_Zone#North_America) mentioned that there was some debate about if the Dry Tortugas were in the Central or the Eastern time zone. While there, I went into the bookstore and asked if there was any truth to them being on Central Time. They looked at me as if this was the first they ever heard about this. In fact, it doesn't make any sense that they would be on anything other than Eastern Time as 99% of those visiting there are arriving via Key West, which is on Eastern Time. So, I went and modified the wikipedia page to remove the apparent misinformation about Dry Tortugas possibly being on Central Time. I then did a google search and came up with a couple of pages (http://keywestseaplanecharters.com/Tips-Secrets/default.asp, http://www.mendosa.com/fitnessblog/?p=6947) claiming that they are officially on Central Time, but that Eastern Time is used there. Is there any truth to Dry Tortugas being officially on Central Time? Did they used to be on Central Time in the past? Aaron

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subscribe
by Petr Baudis March 4, 2011

March 4, 2011

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Chile - Daylight Saving Time extension in 2011
by Pablo Jiménez March 3, 2011

March 3, 2011

Hi, Due to a drought and as one of several actions to avoid a future electricity shortfall this year, Chile extends Daylight Saving Time till early April. According to media reports, this one-time change will take place on Saturday, April 2nd at 24:00 for America/Santiago and on Saturday, April 2nd at 22:00 for Pacific/Easter. At the moment, there's no official decree available, but you can check the information at: http://www.ansa.it/ansalatina/notizie/notiziari/chile/20110302165435226594.… http://af.reuters.com/article/metalsNews/idAFN0223009220110302 http://online.wsj.com/article/BT-CO-20110302-708197.html Best regards, -- Pablo Jimenez

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proposed time zone package changes (Chile, Alaska, et al.)
by Arthur David Olson March 2, 2011

March 2, 2011

Below find proposed changes to the time zone package; the executive summary: * leapseconds Update notice from IERS (change to commentary only) * northamerica Replace Juneau with Juneau, Sitka, and Metlakatla. * southamerica Delay end of DST in 2011 until first Sunday in April. * tz-art.htm Add material on episode of "Outsourced." * zone.tab Replace Juneau with Juneau, Sitka, and Metlakatla. These change do affect current time stamps in Metlakatla and immiment time stamps in Chile. I'm waiting on making changes to Russia until we learn whether or not their new, year-round time will be called standard time; we'll see what happens at the end of this month. Since the Chile change is being made on short notice, I'll update the ftp versions on 2011-03-07 if no problems are found. --ado diff -r -c old/leapseconds new/leapseconds *** old/leapseconds Thu Dec 16 12:24:20 2010 --- new/leapseconds Mon Feb 14 09:30:33 2011 *************** *** 1,5 **** # <pre> ! # @(#)leapseconds 8.10 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)leapseconds 8.11 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 56,68 **** # SERVICE DE LA ROTATION TERRESTRE # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) ! # Tel. : 33 (0) 1 40 51 22 26 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 14 July 2010 # ! # Bulletin C 40 # # To authorities responsible # for the measurement and --- 56,68 ---- # SERVICE DE LA ROTATION TERRESTRE # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) ! # Tel. : 33 (0) 1 40 51 22 29 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 2 February 2011 # ! # Bulletin C 41 # # To authorities responsible # for the measurement and *************** *** 70,78 **** # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of December 2010. # The difference between Coordinated Universal Time UTC and the ! # International Atomic Time TAI is : # # from 2009 January 1, 0h UTC, until further notice : UTC-TAI = -34 s # --- 70,78 ---- # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of June 2011. # The difference between Coordinated Universal Time UTC and the ! # International Atomic Time TAI is : # # from 2009 January 1, 0h UTC, until further notice : UTC-TAI = -34 s # *************** *** 82,87 **** # will be no time step at the next possible date. # # Daniel GAMBIS ! # Director ! # Earth Orientation Center of IERS # Observatoire de Paris, France --- 82,87 ---- # will be no time step at the next possible date. # # Daniel GAMBIS ! # Head ! # Earth Orientation Center of the IERS # Observatoire de Paris, France diff -r -c old/northamerica new/northamerica *** old/northamerica Wed Jan 26 17:13:48 2011 --- new/northamerica Wed Feb 9 14:00:33 2011 *************** *** 1,5 **** # <pre> ! # @(#)northamerica 8.40 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)northamerica 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 426,431 **** --- 426,473 ---- # were nearby inhabitants in some cases and for our purposes perhaps # it's best to simply use the official transition. # + + # From Steve Ferguson (2011-01-31): + # The author lives in Alaska and many of the references listed are only + # available to Alaskan residents. + # + # <a href="http://www.alaskahistoricalsociety.org/index.cfm?section=discover%20alaska&…"> + # http://www.alaskahistoricalsociety.org/index.cfm?section=discover%20alaska&… + # </a> + + # From Arthur David Olson (2011-02-01): + # Here's database-relevant material from the 2001 "Alaska History" article: + # + # On September 20 [1979]...DOT...officials decreed that on April 27, + # 1980, Juneau and other nearby communities would move to Yukon Time. + # Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on + # Pacific Time. + # + # ...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the + # Department's September 1979 decision. Juneau and other communities in + # northern Southeast reverted to Pacific Time on October 26. + # + # On October 28 [1983]...the Metlakatla Indian Community Council voted + # unanimously to keep the reservation on Pacific Time. + # + # According to DOT official Joanne Petrie, Indian reservations are not + # bound to follow time zones imposed by neighboring jurisdictions. + # + # (The last is consistent with how the database now handles the Navajo + # Nation.) + + # From Arthur David Olson (2011-02-09): + # I just spoke by phone with a staff member at the Metlakatla Indian + # Community office (using contact information available at + # <a href="http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla"> + # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla + # </a>). + # It's shortly after 1:00 here on the east coast of the United States; + # the staffer said it was shortly after 10:00 there. When I asked whether + # that meant they were on Pacific time, they said no--they were on their + # own time. I asked about daylight saving; they said it wasn't used. I + # did not inquire about practices in the past. + # 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 *************** *** 432,440 **** --- 474,499 ---- -8:00 - PST 1942 -8:00 US P%sT 1946 -8:00 - PST 1969 + -8:00 US P%sT 1980 Apr 27 2:00 + -9:00 US Y%sT 1980 Oct 26 2:00 -8:00 US P%sT 1983 Oct 30 2:00 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT + Zone America/Sitka -14:58:47 - LMT 1867 Oct 18 + -9:01:13 - LMT 1900 Aug 20 12:00 + -8:00 - PST 1942 + -8:00 US P%sT 1946 + -8:00 - PST 1969 + -8:00 US P%sT 1983 Oct 30 2:00 + -9:00 US Y%sT 1983 Nov 30 + -9:00 US AK%sT + Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18 + -8:46:18 - LMT 1900 Aug 20 12:00 + -8:00 - PST 1942 + -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 diff -r -c old/southamerica new/southamerica *** old/southamerica Thu Dec 16 12:24:20 2010 --- new/southamerica Wed Mar 2 12:47:20 2011 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.44 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.45 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1154,1159 **** --- 1154,1176 ---- # From Arthur Daivd Olson (2010-03-06): # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. + # From Glenn Eychaner (2011-03-02): [geychaner(a)mac.com] + # It appears that the Chilean government has decided to postpone the + # change from summer time to winter time again, by three weeks to April + # 2nd: + # <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia…"> + # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia… + # </a> + # + # This is not yet reflected in the offical "cambio de hora" site, but + # probably will be soon: + # <a href="http://www.horaoficial.cl/cambio.htm"> + # http://www.horaoficial.cl/cambio.htm + # </a> + + # From Arthur David Olson (2011-03-02): + # The emol.com article mentions a water shortage as the cause of the + # postponement, which may mean that it's not a permanent change. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - *************** *** 1189,1196 **** # which is used below in specifying the transition. Rule Chile 2008 only - Mar 30 3:00u 0 - Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - ! Rule Chile 2010 only - Apr 4 3:00u 0 - ! Rule Chile 2011 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 1206,1213 ---- # which is used below in specifying the transition. Rule Chile 2008 only - Mar 30 3:00u 0 - Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - ! Rule Chile 2010 2011 - Apr Sun>=1 3:00u 0 - ! Rule Chile 2012 max - Mar Sun>=9 3:00u 0 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] diff -r -c old/tz-art.htm new/tz-art.htm *** old/tz-art.htm Wed Jan 19 13:47:16 2011 --- new/tz-art.htm Mon Feb 14 16:22:50 2011 *************** *** 9,15 **** <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.19 </address> <p> This file is in the public domain, so clarified as of --- 9,15 ---- <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.20 </address> <p> This file is in the public domain, so clarified as of *************** *** 417,422 **** --- 417,427 ---- http://us.imdb.com/title/tt0137494/ </a>. (Mark Brader, 2009-10-02) </li> + <li> + In "The Todd Couple" episode of "Outsourced" (first aired 2011-02-10), + Manmeet sets up teledates for 6:00 and 9:00; + since one is with a New Yorker and the other with a San Franciscan, + hilarity ensues. </li> </ul> <hr> diff -r -c old/zone.tab new/zone.tab *** old/zone.tab Wed Jan 26 18:47:09 2011 --- new/zone.tab Wed Feb 9 14:00:33 2011 *************** *** 1,5 **** # <pre> ! # @(#)zone.tab 8.40 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # --- 1,5 ---- # <pre> ! # @(#)zone.tab 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # *************** *** 412,420 **** --- 412,422 ---- US +340308-1181434 America/Los_Angeles Pacific Time US +611305-1495401 America/Anchorage Alaska Time US +581807-1342511 America/Juneau Alaska Time - Alaska panhandle + US +571035-1351807 America/Sitka Alaska Time - southeast Alaska panhandle US +593249-1394338 America/Yakutat Alaska Time - Alaska panhandle neck US +643004-1652423 America/Nome Alaska Time - west Alaska US +515248-1763929 America/Adak Aleutian Islands + US +550737-1313435 America/Metlakatla Metlakatla Time - Annette Island US +211825-1575130 Pacific/Honolulu Hawaii UY -3453-05611 America/Montevideo UZ +3940+06648 Asia/Samarkand west Uzbekistan

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Chile extends daylight time this year
by Andy Heninger March 2, 2011

March 2, 2011

Chile appears to have gone ahead and made a last minute change in their transition to standard time this year. From http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia… Gobierno posterga en tres semanas "horario de invierno" para enfrentar déficit hídrico El "horario de invierno" comenzará a regir este año a partir de la medianoche del 2 de abril.

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Chilean government postpones time change
by Glenn Eychaner March 2, 2011

March 2, 2011

It appears that the Chilean government has decided to postpone the change from summer time to winter time again, by three weeks to April 2nd: http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia… This is not yet reflected in the offical "cambio de hora" site, but probably will be soon: http://www.horaoficial.cl/cambio.htm -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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Turkish dispute over date of daylight saving time change
by Alexander Krivenyshev Feb. 24, 2011

Feb. 24, 2011

Turkish dispute over date of daylight saving time change http://www.worldbulletin.net/?aType=haber&ArticleID=69929 "Turkey plans to switch to daylight saving time on March 27 at 3 a.m., moving clocks forward one hour to make better use of daylight, but Turkish educators object to the plan because 1.5 million students will take a nationwide exam on that day." Alexander Krivenyshev, http://www.worldtimezone.com

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(historical) information about Zone Europe/Brussels
by gunther Vermeir Feb. 24, 2011

Feb. 24, 2011

Hello, I just came across an article about getting to an "official" time in the early 1800's in Belgium , maybe it might be of use / interest of someone. It looks like the Zone Europe/Brussels 0:17:30 - LMT 1880 might be more precise Zone Europe/Brussels 0:17:30 - LMT 1836 June <arbitrary day> of course, the local time for Brussels before was most likely the same, but it seams it was made "official" by Adolphe Quetelet ( http://en.wikipedia.org/wiki/Adolphe_Quetelet ) in June 1836. I'm was unable to verify the actual referenced official journal of Belgium (Belgisch Staatsblad / Moniteur Belge) publications. If there is interest I'm willing to try to get a hold of them in the royal Library and verify it. Website in question : French: http://www.cathedralestmichel.be/fr/cult_archi_meridien.php?lang=fr dutch http://www.cathedralestmichel.be/nl/cult_archi_meridien.php?lang=nl This seams to based on a publication (in French) of jan-feb 1951 " Ciel et Terre, Vol. 67, " , a popular scientific journal. Title: La méridienne de Ste-Gudule à Bruxelles by Henri Michel. http://articles.adsabs.harvard.edu//full/1951C%26T....67...16M/0000016.000.… part of interest (in Dutch) of the first link: -- Ingevolge K.B. dd. 22.02.1836 werd A. Quetelet , directeur van het eerste Observatorium van Brussel, aangesteld om aan de bijzonderste lokaliteiten van het rijk de middelen te verschaffen om over een nauwkeurig "lokaal uur" te beschikken in het vooruitzicht van het goed functioneren van de spoorwegen. De opdracht hield in om in de steden Antwerpen, Oostende, Brugge, Gent en Luik een kleine middaglijnopening op te stellen en in eenenveertig andere steden van het rijk meridianen te plaatsen in de kathedralen, stadhuizen of andere gebouwen die de plaatsing ervan nuttig zouden maken. ... Maar de grote meridiaan van Brussel werd door A. Quetelet in juni 1836 getraceerd in de vloer van de kruisbeuk van de kathedraal. De minutieuze beschrijving in een rapport bestemd voor de Minister van Binnenlandse Zaken, werd gelukkig veilig gesteld door een publicatie in het Belgisch Staatsblad (Bijvoegsel bij het nr. 41 van 10 februari 1839). -- Translation (a bit shortened - needs a "native english speaker check" :) ) : -- By the Royal Decree of 22 feb 1836 , Adolphe Quetelet, director of the first observatory of Brussels was appointed to provide in whole Belgium a precise "local time" to facilitate the proper working of the railways. The mission was to erect in Antwerp, Oostend, Bruges, Ghent and Liège noon marks and place meridian lines in 41 other cities in cathedrals, city halls or other buildings. The "great meridian" of Brussels was traced by Adolphe Quetelet in June 1836 on the naves floor of the St Gudule and St Michael's Cathedral. A description in great detail of this, intended for the Minister of Internal Affairs, was later published as addition to the official journal of Belgium (Belgisch Staatsblad / Moniteur Belge) nr 41 dated 10 feb 1839. -- Greeting from Brussels, Gunther

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Re: Revisiting Australian time zone abbreviations
by Anand Kumria Feb. 24, 2011

Feb. 24, 2011

[[ sorry, I was unable to keep References: and In-Reply-To: ids, ]] [[ this is a continuation of http://thread.gmane.org/gmane.comp.time.tz/3244/focus=3251 ]] Paul Eggert <eggert(a)CS.UCLA.EDU> writes: > > > The government website of Australia states the time > > zone names for Australia are Australian Eastern Standard Time (AEST), ... > > I'm afraid it's not that simple. Actually, it could be. > Different websites operated by > the government of Australia use different names and abbreviations. > The Bureau of Meteorology often uses EST/CST/WST and EDT/CDT; see, > for example, <http://www.bom.gov.au/satellite/about_satpix.shtml>. > And the Australian Transport Safety Bureau often uses EST/CST/WST and > ESuT/CSuT; see, for example, > <http://www.atsb.gov.au/media/690841/ar-2009-016(2).pdf>. I had never heard of the atsb prior to your email. At the time of writing the atsb link does not exist. > The tz database's philosophy has generally tried to record what people > typically do with their clocks and their abbreviations. If one government > agency says that it's AEST/AEDT, that's a good piece of evidence; but if > other agencies disagree, that's evidence that there's not a solid consensus > within the government what the abbreviations are or should be. I suspect if you approached most American government agencies and asked what is the official paper size, they would respond with 'letter'. Despite the fact that it is actually A4 -- the US being a metric country. My point is that there will always being different parts of the goverment in many countries unaware of what is actually official (technically Australia uses 24-hour time, most people would be unaware of this). > The most amusing thing about <http://australia.gov.au/about-australia/our- country/time>, > the web page that Richard Stanway quoted, was this little message at its bottom: > > "All times shown are Sydney, Australia Time" > > In other words, the Australian government doesn't follow its own advice on > time zone names and abbreviations, even on the government page that talks > about time zone names! They just say the equivalent of "TZ=Australia/Sydney"! You may not have hovered over the link, http://australia.gov.au/about- australia/our-country/time, however. Yes, that may be what the text says, if you hover over it, it says: "Australian Eastern Standard Time Sydney (AEST)". Which I think should be plenty of evidence that it is time, pun intended, to switch to AEST/ACST/AWST and AEDT/ACDT as appropriate. Regards, Anand

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Chile contemplating delay in time change
by Andy Heninger Feb. 24, 2011

Feb. 24, 2011

Chile contemplating delay in time change. No concrete proposals or decisions. http://www.elsur.cl/base_elsur/site/artic/20110222/pags/20110222102645.html <http://www.elsur.cl/base_elsur/site/artic/20110222/pags/20110222102645.html> http://www.puranoticia.cl/titular5/gobierno-estudia-retrasar-cambio-horario… <http://www.elsur.cl/base_elsur/site/artic/20110222/pags/20110222102645.html>And many similar press articles. Search for cambio de horas Chile Golborne With help from Google Translate, "The Biministro of Mines and Energy, Laurence Golborne confirmed Tuesday that the government is evaluating the option to postpone the change to winter time due to the energy crisis in the country. "The change is currently scheduled for Saturday March 12, but the possible postponement is part of the rationalization of energy that drives the government." "Golborne said "that is being evaluated, is a subject that has a relatively low impact on consumption but may have a significant impact on communication and citizenship," he said."

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Macau
by jrl Feb. 23, 2011

Feb. 23, 2011

The rule for Macau ends in 1980 but its Zone indicates that the rules end in 1999. What is the correct rule for Macau from 1980 through 1999? Did they return to LMT? Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Macau 7:34:20 - LMT 1912 8:00 Macau MO%sT 1999 Dec 20 # return to China 8:00 PRC C%sT

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Incorrect change in System time
by puru sothaman Feb. 20, 2011

Feb. 20, 2011

Hi all, I have written my own rule for customized timezone.The user will provide start and end time for the DST settings.According to that the rule will change and timezone is compiled using "zic". Problem: The Program works fine for all other days.When i give the start time as 2003 jan wed 00:03 and end time as 2003 dec tue 22:05.When i changed my system time to 2003 jan 1 00:00, the system time immediately changed to 22:00.This is not expected behavior as it should change time only on 00:03. When i checked the localtime using "zdump" the "DST" is off for 2003. Kindly help me. Kindly excuse me if anything is wrong on the above mail as i am new to the group. Regards, Purusothaman R

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tz mailing list
by Bruce Camber Feb. 19, 2011

Feb. 19, 2011

Would you please add me to the tz mailing lists? Thank you. Bruce * Primary Interest*: *Separate the 24 Time Zones from the Universal Time Code (UTC)*. Currently time zones around the world are expressed as an offset from UTC. Of course, we should continue to use UTC to set the time within each time zone, but *not as the designation of that time zone*. It confuses schoolchildren and the business world. *We need to be referring to each time zone as their number, 1 through 24*. It helps to facilitate global thinking <http://smallbusinessschool.org/page1856.html>. *More*...<http://smallbusinessschool.org/page2424.html> C: 214.801.8521 T: 504.305.4510 Skype: Bruce.Camber Bruce Camber, Executive Producer Small Business School, Inc. Private Business Channel, Inc. http://SmallBusinessSchool.org <http://smallbusinessschool.org/> As further backgrounder info. * Small Business School has a sixteen-year history as a weekly, half-hour television show. On over 200 PBS stations in the USA and on several thousand stations around the world via the Voice of America, the focus has always been on best business practices. http://smallbusinessschool.org/page18.html * Every business owner has been recommended by their local business advocates, often the local Chamber of Commerce, and confirmed by their national trade association for their leadership, generosity of spirit, ethics, and courage. Nobody can pay or has ever paid to be on this show. http://smallbusinessschool.org/page898.html * Over 40 of the best-selling business textbooks published by Pearson-Prentice Hall and Thomson Learning-Cengage include these case study guides and video: http://smallbusinessschool.org/page2162.html

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Tomsk wrong timezone
by Jesper Norgaard Welen Feb. 18, 2011

Feb. 18, 2011

A quote from the 'europe' file: # Novosibirskaya oblast'. Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time 7:00 Russia NOV%sT 1991 Mar 31 2:00s 6:00 Russia NOV%sT 1992 Jan 19 2:00s 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P. 6:00 Russia NOV%sT # # From Oscar van Vlijmen (2001-08-25): [This region consists of] # Kemerovskaya oblast', Krasnoyarskij kraj, # Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug, Tomskaya oblast', # Respublika Tuva, Respublika Khakasiya, Evenkijskij avtonomnyj okrug. Zone Asia/Krasnoyarsk 6:11:20 - LMT 1920 Jan 6 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time 7:00 Russia KRA%sT 1991 Mar 31 2:00s 6:00 Russia KRA%sT 1992 Jan 19 2:00s 7:00 Russia KRA%sT In fact, it seems that Tomsk city and Tomskaya oblast' is part of the Novosibirsk timezone, see http://en.wikipedia.org/wiki/Tomskaya_Oblast%27%2C_Russia and http://www.admin.tomsk.ru/1024 ... the latter, if you don't understand russian, look at the time under the green horse. I don't know if this simply means that Tomskaya oblast' changed timezone since 2001, which is a possibility, that would then require a new timezone. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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Turkish dispute over date of daylight saving time change
by Alexander Krivenyshev Feb. 17, 2011

Feb. 17, 2011

Turkish dispute over date of daylight saving time change http://www.worldbulletin.net/?aType=haber&ArticleID=69929 "Turkey plans to switch to daylight saving time on March 27 at 3 a.m., moving clocks forward one hour to make better use of daylight, but Turkish educators object to the plan because 1.5 million students will take a nationwide exam on that day." Alexander Krivenyshev, http://www.worldtimezone.com

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Is this a bug in the upstream or just Ubuntu (10.04LTS)?
by Stephen (Esteban) McCracken Feb. 17, 2011

Feb. 17, 2011

The GMT-x and GMT+x in the "ETC" section are flipped/backwards. (Arizona should be GMT-7, but equates to GMT+7). Quito/Bogota should be GMT-5, but GMT-5 is giving GMT+5. See: https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/720792

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FW: Revisiting Australian time zone abbreviations
by Olson, Arthur David (NIH/NCI) [E] Feb. 16, 2011

Feb. 16, 2011

I'm (trepidatiously) forwarding this message from Richard Stanway, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado From: Richard Stanway [mailto:r.stanway@gmail.com] Sent: Sunday, June 13, 2010 5:49 To: tz(a)lecserver.nci.nih.gov Subject: Revisiting Australian time zone abbreviations Hello, I came across this mailing list while researching a time zone issue on our website which indirectly makes use of the zoneinfo. We localize some timestamps to the visitors time zone, but the site is trafficked by a predominately US audience where the abbreviation "EST" is used quite often. It is difficult for an Australian visitor to realize that the times they are seeing have been localized since they show for example as "8pm EST" due to the abbreviations used for the Australian time zones, leading to confusion as to whether it is US EST or AU EST. The last discussion on AEST vs EST seems to be about 9 years old and I figured it was time to revisit the subject now that there seems to be an official source. The government website of Australia states the time zone names for Australia are Australian Eastern Standard Time (AEST), Australian Central Standard Time (ACST) and Australian Western Standard Time (AWST) with Australian Eastern Daylight Time (AEDT) and Australian Central Daylight Time (ACDT) when observing daylight saving time. Reference: http://australia.gov.au/about-australia/our-country/time Any chance of these official names making it into a zoneinfo update?

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FW: [casting; overflow detection]
by Olson, Arthur David (NIH/NCI) [E] Feb. 15, 2011

Feb. 15, 2011

I'm forwarding this message from Christos Zoulas. --ado -----Original Message----- From: Christos Zoulas [mailto:christos@zoulas.com] Sent: Thursday, January 13, 2011 8:50 To: Olson, Arthur David (NIH/NCI) [E] Subject: Hi, Mail to the tz mailing list does not seem to go through from my server. E82CA564C4 2128 Thu Jan 13 04:00:52 christos(a)zoulas.com (connect to lecserver.nci.nih.gov[137.187.215.78]: Operation timed out) tz(a)lecserver.nci.nih.gov I I sent the following two messages: Best, christos >From christos Wed Jan 12 11:49:47 2011 From: christos(a)rebar.astron.com (Christos Zoulas) Date: Wed, 12 Jan 2011 11:49:47 -0500 In-Reply-To: <201101121624.p0CGOrGD018457(a)lecserver.nci.nih.gov> from Arthur David Olson (Jan 12, 11:24am) Organization: Astron Software X-Mailer: Mail User's Shell (7.2.6 beta(4.pl1)+dynamic 20000103) To: <tz(a)elsie.nci.nih.gov>, <tz(a)lecserver.nci.nih.gov> Subject: Re: proposed time zone package changes (Hawaii, stack overflow, et al.) Status: OR On Jan 12, 11:24am, olsona(a)elsie.nci.nih.gov (Arthur David Olson) wrote: -- Subject: proposed time zone package changes (Hawaii, stack overflow, et al | If no problems are found, these changes will appear in tzcode2011a.tar.gz | and tzdata2011.tar.gz on 2011-11-23. Please don't cast the result of calloc(3). It will hide errors where the prototype is not in scope and then the function is assumed to return "int" which breaks on 64 bit systems. It's been more than 20 years (22 actually since c89) since ANSI C made allocation functions return "void *" :-) On a different subject, I've committed the reentrant versions of the timezone code to the NetBSD tree. Is there any chance that those changes will be merged anytime soon? Or do people need more time to review them? How do we go about accepting or rejecting them? Should there be a vote? Best, christos >From christos Wed Jan 12 23:00:52 2011 From: christos(a)rebar.astron.com (Christos Zoulas) Date: Wed, 12 Jan 2011 23:00:52 -0500 Organization: Astron Software X-Mailer: Mail User's Shell (7.2.6 beta(4.pl1)+dynamic 20000103) To: tz(a)lecserver.nci.nih.gov Subject: Gcc and integer overflow Status: OR Hello, Integer overflow in ansi c has undefined behavior. Gcc 4.5.x takes advantage of this fact to optimize code. In particular you cannot depend anymore on: int oldx = x; x += delta; if ((oldx > x && delta > 0) || (oldx < x && delta < 0)) overflow; What happens in fact, is that gcc will warn, and drop the code that is "impossible" (drop the whole if statement). Unfortunately tzcode relies on the above behavior to detect overflow. I have changed the code the following way (but I have not tested it), so if you please can you check my work, or propose a better way to do it. I think we should come up with a viable solution for the next tzcode release. Many thanks, christos Index: localtime.c =================================================================== RCS file: /cvsroot/src/lib/libc/time/localtime.c,v retrieving revision 1.51 diff -u -u -r1.51 localtime.c --- localtime.c 6 Jan 2011 02:41:34 -0000 1.51 +++ localtime.c 10 Jan 2011 21:32:09 -0000 @@ -1703,9 +1703,16 @@ { int number0; + if (delta == 0) + return 0; + number0 = *number; *number += delta; - return (*number < number0) != (delta < 0); + + if (delta < 0) + return number0 < 0 && (-*number + INT_MIN) > delta; + else /* delta > 0 */ + return number0 > 0 && (INT_MAX - *number) < delta; } static int @@ -1713,9 +1720,16 @@ { long number0; + if (delta == 0) + return 0; + number0 = *number; *number += delta; - return (*number < number0) != (delta < 0); + + if (delta < 0) + return number0 < 0 && (-*number + LONG_MIN) > delta; + else /* delta > 0 */ + return number0 > 0 && (LONG_MAX - *number) < delta; } static int

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Fwd: Question about time period transition points
by Mike Giroux Feb. 14, 2011

Feb. 14, 2011

Wise ones of the TZ list, A (quite academic, but possibly interesting) question came up here as we're trying to document the behaviour of our time zone code. We're trying to figure out whether the transition time is reached or skipped. For example, for these 2 rules, # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule TC 1979 1986 - Apr lastSun 2:00 1:00 D Rule TC 1979 2006 - Oct lastSun 2:00 0 S does the clock reach "2:00" on the transition days? In that case, the transition would go from "2:00(S)" -> "3:00(D) + epsilon" when moving forward, and "2:00(D)" -> "1:00(S) + epsilon" when moving back. Or does it go from "2:00(S) - epsilon" -> "3:00(D)" and "2:00(D) - epsilon" -> "1:00(S)" ? If the transition time IS reached, which "name" would attach to it? Phrased differently, for the Americas/NewYork transitions this spring: 1) Is the time coordinate value at the instant of transition "2:00 AM" or "3:00 AM" (NIST says "begins at 2:00 a.m. on the second Sunday of March") 2) Is the designation of that coordinate (in the local New York City timezone) "EDT" or "EST"? Thanks! Mike

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