January 2010 - tz - lists.iana.org

proposed tz change for Latvia, Lithuania
by Paul Eggert May 25, 2015

May 25, 2015

It's March Madness time for daylight-saving rule changes. Here's a proposed change to the tz database to keep up with the latest political development, which affects time stamps starting March 29: * Latvia and Lithuania will not observe DST, starting this year. Thanks to Andrei Ivanov for this info. =================================================================== RCS file: RCS/europe,v retrieving revision 2000.3 retrieving revision 2000.3.0.1 diff -pu -r2000.3 -r2000.3.0.1 --- europe 2000/03/04 15:31:08 2000.3 +++ europe 2000/03/08 17:48:59 2000.3.0.1 @@ -1135,6 +1135,12 @@ Link Europe/Rome Europe/San_Marino # 1997-01-21 on transition to Summer time ... established the same order of # daylight savings time settings as in the States of the European Union. +# From Andrei Ivanov (2000-03-06): +# This year Latvia will not switch to Daylight Savings Time (as specified in +# <a href="http://www.lv-laiks.lv/wwwraksti/2000/071072/vd4.htm"> +# The Regulations of the Cabinet of Ministers of the Rep. of Latvia of +# 29-Feb-2000 (#79)</a>, in Latvian for subscribers only). + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 - @@ -1151,7 +1157,8 @@ Zone Europe/Riga 1:36:24 - LMT 1880 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s 2:00 1:00 EEST 1989 Sep lastSun 2:00s 2:00 Latvia EE%sT 1997 Jan 21 - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb 29 + 2:00 - EET # Liechtenstein # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1178,6 +1185,11 @@ Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun # motion to give up shifting to summer time in spring, as it was # already done by Estonia. +# From Andrei Ivanov (2000-03-06): +# I've heard that Ministers of three Baltic countries on their summit +# somewhere in February decided not to switch to summer time starting from +# this spring. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Vilnius 1:41:16 - LMT 1880 1:24:00 - WMT 1917 # Warsaw Mean Time @@ -1192,7 +1204,8 @@ Zone Europe/Vilnius 1:41:16 - LMT 1880 2:00 C-Eur EE%sT 1998 2:00 - EET 1998 Mar 29 1:00u 1:00 EU CE%sT 1999 Oct 31 1:00u - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb + 2:00 - EET # Luxembourg # Whitman disagrees with most of these dates in minor ways; go with Shanks.

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corrected DST data Switzerland 1941 and 1942, final report
by Alois Treindl Aug. 25, 2011

Aug. 25, 2011

Hello I have researched the DST usage in Switzerland during the 1940ies. As I wrote in an earlier message, I suspected the current tzdata values to be wrong. This is now verified. I have found copies of the original ruling by the Swiss Federal government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss federal law collection) and attach GIF copies of the two pages for 1941. DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. DST began on Monday, 4 May 1942 at 01:00 am DST ended on Monday, 5 Oct 1942 at 02:00 am There was no DST in 1940, I have checked the law collection carefully. It is also indicated by the fact that the 1942 entry in the law collection points back to 1941 as a reference, but no reference to any other years are made. Newspaper articles I have read in the archives on 6 May 1941 reported about the introduction of DST (Sommerzeit in German) during the previous night as an absolute novelty, because this was the first time that such a thing had happened in Switzerland. I have also checked 1916, because one book source (Gabriel, Traite de l'heure dans le monde) claims that Switzerland had DST in 1916. This is false, no official document could be found. Probably Gabriel got misled by references to Germany, which introduced DST in 1916 for the first time. The tzdata rules for Switzerland must be changed to: Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - The 1940 rules must be deleted. One further detail for Switzerland, which is probably out of scope for most users of tzdata: The zone file Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 0:29:44 - BMT 1894 Jun #Bern Mean Time 1:00 Swiss CE%sT 1981 1:00 EU CE%sT describes all of Switzerland correctly, with the exception of the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not follow Bern Mean Time but kept its own local mean time. To represent this, an extra zone would be needed. Two GIF files are attached. best regards Alois -- || Alois Treindl, Astrodienst AG, mailto:alois@astro.com || Zollikon/Zurich, Switzerland || Free astrological charts at http://www.astro.com/ || SWISS EPHEMERIS Free Edition at http://www.astro.com/swisseph/

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Can you add permatime.com to the twinsun link page
by Tim Diggins May 19, 2011

May 19, 2011

Hi there - I've been lurking on the list for a while. I don't contribute much as a I'm a (humbly grateful) user of tz information, rather than a provider. I mentioned our http://permatime.com site, a while back, but don't think I explicitly asked for it to go on the twinsun link page under "Web pages using recent versions of the tz database". Can it? http://permatime.com is a service for generating and viewing links that refer to a particular point in time and can be displayed in multiple timezones. It uses the ruby tzinfo gem, based on the Olson Tz database. kind regards Tim http://permatime.com http://teamportfolios.com/permatime Tim Diggins http://red56.co.uk http://tim.teamportfolios.com/

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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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core dump from within asctime_r()
by Robert Elz Feb. 18, 2010

Feb. 18, 2010

A NetBSD user reported fsck dumping core (when attempting to correct a corrupted filesystem). That's not nice. Upon investigation, the core dump turns out to be from within asctime_r() (as called via asctime() from ctime()). The code in fsck just does p = ctime(&t); where "t" contains one of the time fields from an (already determined to be corrupted, or we wouldn't be printing) inode. ctime() is (or course) just asctime(locatime(t)) locatime() can return NULL these days, and given a nonsense time value (which is quite likely under these circumstances), probably did, but asctime() doesn't expect anything but a valus "struct tm *" and will simply dereference NULL is NULL is returned from localtime() - instant core. It would be possible to make ctime() be tm = localtime(t); if (tm == NULL) return NULL; return asctime(tm); and in theory that would be adequate, but I'm actually going to suggest moving the fix into asctime() (into asctime_r() really of course), and have asctime_r() start if (timeptr == NULL) return NULL; I think that's a safer fix. Appended is the patch I suggest, made against the tzcode2009t sources (latest I believe.) kre

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FW: problem with java tz database
by Olson, Arthur David (NIH/NCI) [E] Jan. 25, 2010

Jan. 25, 2010

I'm (very belatedly, for which I apologize) forwarding this message from Mamun Shaheed, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado From: Mamun Shaheed [mailto:mamun.shaheed@gmail.com] Sent: Thursday, December 31, 2009 1:13 To: tz(a)lecserver.nci.nih.gov Subject: problem with java tz database Dear all, I was trying to modify the tzdatabase ($JRE_HOME/lib/zi/*) for JRE, but could not make it sucess. Here is what I have done so far... 1. Downloaded the code and latest tzdata from ftp://elsie.nci.nih.gov/pub/. 2. Modified the asia file and insert my rule there. 3. compile the file with zic. 4. copy the compiled file and put in in $JRE_HOME/lib/zi/Asia/ of my windows pcs 5. run the DSTTest file available in sun.com to check the time zone and got following error C:\Program Files\Java\jre1.5.0_06\bin>java DSTTest "12/30/2009 1:00 AM" ZoneInfo: wrong magic number: Asia/Dhaka ZoneInfo: wrong magic number: Asia/Dhaka JRE version : 1.5.0_06 Wed Dec 30 01:00:00 GMT 2009 TimeZone tested : Greenwich Mean Time Your tested time is not in daylight-savings time. C:\Program Files\Java\jre1.5.0_06\bin> Please help me. Mamun

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tzdata2010b
by Olson, Arthur David (NIH/NCI) [E] Jan. 25, 2010

Jan. 25, 2010

The file... ftp://elsie.nci.nih.gov/pub/tzdata2010b.tar.gz ...is now available; this reflects the Mexico changes previously circulated on the time zone mailing list. With providence well enjoy a bit of stability now. --ado

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proposed time zone package changes--Mexico (revised)
by Arthur David Olson Jan. 20, 2010

Jan. 20, 2010

Based on the updated information from a government web site, here are revised proposed changes to the time zone package; files "northamerica" and "zone.tab" are involved. If no problems are found, these will appear in the ftp version on 2010-01-25. --ado diff -r -c old/northamerica new/northamerica *** old/northamerica Mon Jan 18 08:30:04 2010 --- new/northamerica Wed Jan 20 12:37:20 2010 *************** *** 1,5 **** # <pre> ! # @(#)northamerica 8.28 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)northamerica 8.30 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1955,1960 **** --- 1955,2012 ---- # http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20) # confirms this. Sonora as usual is the only state where DST is not applied. + # From Steffen Thorsen (2009-12-28): + # + # Steffen Thorsen wrote: + # > Mexico's House of Representatives has approved a proposal for northern + # > Mexico's border cities to share the same daylight saving schedule as + # > the United States. + # Now this has passed both the Congress and the Senate, so starting from + # 2010, some border regions will be the same: + # <a href="http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides…"> + # http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides… + # </a> + # <a href="http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario…"> + # http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario… + # </a> + # (Spanish) + # + # Could not find the new law text, but the proposed law text changes are here: + # <a href="http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf"> + # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf + # </a> + # (Gaceta Parlamentaria) + # + # There is also a list of the votes here: + # <a href="http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html"> + # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html + # </a> + # + # Our page: + # <a href="http://www.timeanddate.com/news/time/north-mexico-dst-change.html"> + # http://www.timeanddate.com/news/time/north-mexico-dst-change.html + # </a> + + # From Arthur David Olson (2010-01-20): + # The page + # <a href="http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010"> + # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 + # </a> + # includes this text: + # En los municipios fronterizos de Tijuana y Mexicali en Baja California; + # Juárez y Ojinaga en Chihuahua; Acuña y Piedras Negras en Coahuila; + # Anáhuac en Nuevo León; y Nuevo Laredo, Reynosa y Matamoros en + # Tamaulipas, la aplicación de este horario estacional surtirá efecto + # desde las dos horas del segundo domingo de marzo y concluirá a las dos + # horas del primer domingo de noviembre. + # En los municipios fronterizos que se encuentren ubicados en la franja + # fronteriza norte en el territorio comprendido entre la línea + # internacional y la línea paralela ubicada a una distancia de veinte + # kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el + # interior del país, la aplicación de este horario estacional surtirá + # efecto desde las dos horas del segundo domingo de marzo y concluirá a + # las dos horas del primer domingo de noviembre. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S *************** *** 1981,1993 **** -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT ! # Coahuila, Durango, Nuevo Leon, Tamaulipas Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico ! Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 --- 2033,2051 ---- -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT ! # Coahuila, Durango, Nuevo Leon, Tamaulipas (near US border) ! Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00 ! -6:00 - CST 1988 ! -6:00 US C%sT 1989 ! -6:00 Mexico C%sT 2010 ! -6:00 US C%sT ! # Coahuila, Durango, Nuevo Leon, Tamaulipas (away from US border) Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico ! Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 *************** *** 1996,2002 **** -6:00 Mexico C%sT 2001 Sep 30 02:00 -6:00 - CST 2002 Feb 20 -6:00 Mexico C%sT ! # Chihuahua Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 --- 2054,2072 ---- -6:00 Mexico C%sT 2001 Sep 30 02:00 -6:00 - CST 2002 Feb 20 -6:00 Mexico C%sT ! # Chihuahua (near US border) ! Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20 ! -7:00 - MST 1927 Jun 10 23:00 ! -6:00 - CST 1930 Nov 15 ! -7:00 - MST 1931 May 1 23:00 ! -6:00 - CST 1931 Oct ! -7:00 - MST 1932 Apr 1 ! -6:00 - CST 1996 ! -6:00 Mexico C%sT 1998 ! -6:00 - CST 1998 Apr Sun>=1 3:00 ! -7:00 Mexico M%sT 2010 ! -7:00 US M%sT ! # Chihuahua (away from US border) Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 *************** *** 2030,2039 **** -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT ! # Baja California Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 --- 2100,2129 ---- -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT ! # Baja California (near US border) Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 + -7:00 - MST 1930 Nov 15 + -8:00 - PST 1931 Apr 1 + -8:00 1:00 PDT 1931 Sep 30 + -8:00 - PST 1942 Apr 24 + -8:00 1:00 PWT 1945 Aug 14 23:00u + -8:00 1:00 PPT 1945 Nov 12 # Peace + -8:00 - PST 1948 Apr 5 + -8:00 1:00 PDT 1949 Jan 14 + -8:00 - PST 1954 + -8:00 CA P%sT 1961 + -8:00 - PST 1976 + -8:00 US P%sT 1996 + -8:00 Mexico P%sT 2001 + -8:00 US P%sT 2002 Feb 20 + -8:00 Mexico P%sT 2010 + -8:00 US P%sT + # Baja California (away from US border) + Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32 + -7:00 - MST 1924 + -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 diff -r -c old/zone.tab new/zone.tab *** old/zone.tab Mon Jan 18 08:30:04 2010 --- new/zone.tab Wed Jan 20 12:25:55 2010 *************** *** 1,5 **** # <pre> ! # @(#)zone.tab 8.31 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # --- 1,5 ---- # <pre> ! # @(#)zone.tab 8.33 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # *************** *** 279,289 **** MX +1924-09909 America/Mexico_City Central Time - most locations MX +2105-08646 America/Cancun Central Time - Quintana Roo MX +2058-08937 America/Merida Central Time - Campeche, Yucatan ! MX +2540-10019 America/Monterrey Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas MX +2313-10625 America/Mazatlan Mountain Time - S Baja, Nayarit, Sinaloa ! MX +2838-10605 America/Chihuahua Mountain Time - Chihuahua MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora ! MX +3232-11701 America/Tijuana Pacific Time MY +0310+10142 Asia/Kuala_Lumpur peninsular Malaysia MY +0133+11020 Asia/Kuching Sabah & Sarawak MZ -2558+03235 Africa/Maputo --- 279,292 ---- MX +1924-09909 America/Mexico_City Central Time - most locations MX +2105-08646 America/Cancun Central Time - Quintana Roo MX +2058-08937 America/Merida Central Time - Campeche, Yucatan ! MX +2540-10019 America/Monterrey Mexican Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas away from US border ! MX +2550-09730 America/Matamoros US Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas near US border MX +2313-10625 America/Mazatlan Mountain Time - S Baja, Nayarit, Sinaloa ! MX +2838-10605 America/Chihuahua Mexican Mountain Time - Chihuahua away from US border ! MX +2934-10425 America/Ojinaga US Mountain Time - Chihuahua near US border MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora ! MX +3232-11701 America/Tijuana US Pacific Time - Baja California near US border ! MX +3018-11452 America/Santa_Isabel Mexican Pacific Time - Baja California away from US border MY +0310+10142 Asia/Kuala_Lumpur peninsular Malaysia MY +0133+11020 Asia/Kuching Sabah & Sarawak MZ -2558+03235 Africa/Maputo

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Wrong DST rules for Mauritius
by Leonid A. Movsesjan Jan. 20, 2010

Jan. 20, 2010

Good day! There are two rules for Mauritius in current version of timezone/africa: Rule Mauritius 2008 max - Oct lastSun 2:00s 1:00 S Rule Mauritius 2009 max - Mar lastSun 2:00s 0 - It's wrong, because Mauritius used DST only in 2008/2009, prooflinks: http://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html So, rules should be: Rule Mauritius 2008 only - Oct lastSun 2:00s 1:00 S Rule Mauritius 2009 only - Mar lastSun 2:00s 0 - or something like that. -- Best regards, Leonid A. Movsesjan

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Mexican border DST
by Olson, Arthur David (NIH/NCI) [E] Jan. 20, 2010

Jan. 20, 2010

I've found this government-site web page... http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 ...indicating that Ensenada is indeed to use US DST rules starting in 2010; I'll adjust the proposed time zone package changes accordingly and hope to send something out later today. --ado

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