February 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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proposed time zone package changes--Paraguay, core dump avoidance
by Arthur David Olson March 4, 2010

March 4, 2010

Below find proposed changes to the time zone package: localtime.c more core dump avoidance work southamerica changes to Paraguay DST rules from 2010 forward If no problems are found, these are to show up on the ftp site on 2010-03-01. (I'm trying to get a good reference before making Bangladesh changes; I'm trying to get starting- and ending-time-of-day information--and trying to learn whether or not DST was actually observed in 2009--before making Samoa changes.) --ado ------- localtime.c ------- *** /tmp/geta19371 Wed Feb 24 08:46:42 2010 --- /tmp/getb19371 Wed Feb 24 08:46:42 2010 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.10"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.12"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 389,394 **** --- 389,395 ---- nread = read(fid, u.buf, sizeof u.buf); if (close(fid) < 0 || nread <= 0) return -1; + sp->goback = sp->goahead = FALSE; for (stored = 4; stored <= 8; stored *= 2) { int ttisstdcnt; int ttisgmtcnt; *************** *** 555,561 **** sp->ttis[sp->typecnt++] = ts.ttis[1]; } } - sp->goback = sp->goahead = FALSE; if (sp->timecnt > 1) { for (i = 1; i < sp->timecnt; ++i) if (typesequiv(sp, sp->types[i], sp->types[0]) && --- 556,561 ---- *************** *** 1163,1169 **** #ifdef ALL_STATE if (lclptr == NULL) { ! lclptr = (struct state *) malloc(sizeof *lclptr); if (lclptr == NULL) { settzname(); /* all we can do */ return; --- 1163,1169 ---- #ifdef ALL_STATE if (lclptr == NULL) { ! lclptr = (struct state *) calloc(1, sizeof *lclptr); if (lclptr == NULL) { settzname(); /* all we can do */ return; *************** *** 1194,1200 **** #ifdef ALL_STATE if (lclptr == NULL) { ! lclptr = (struct state *) malloc(sizeof *lclptr); if (lclptr == NULL) { settzname(); /* all we can do */ return; --- 1194,1200 ---- #ifdef ALL_STATE if (lclptr == NULL) { ! lclptr = (struct state *) calloc(1, sizeof *lclptr); if (lclptr == NULL) { settzname(); /* all we can do */ return; *************** *** 1355,1361 **** if (!gmt_is_set) { gmt_is_set = TRUE; #ifdef ALL_STATE ! gmtptr = (struct state *) malloc(sizeof *gmtptr); if (gmtptr != NULL) #endif /* defined ALL_STATE */ gmtload(gmtptr); --- 1355,1361 ---- if (!gmt_is_set) { gmt_is_set = TRUE; #ifdef ALL_STATE ! gmtptr = (struct state *) calloc(1, sizeof *gmtptr); if (gmtptr != NULL) #endif /* defined ALL_STATE */ gmtload(gmtptr); ------- southamerica ------- *** /tmp/geta19392 Wed Feb 24 08:46:57 2010 --- /tmp/getb19392 Wed Feb 24 08:46:57 2010 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.40 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1364,1371 **** # Decree 1,867 (2004-03-05) # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) # <http://www.presidencia.gov.py/decretos/D1867.pdf> ! Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S ! Rule Para 2005 max - Mar Sun>=8 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 --- 1364,1387 ---- # Decree 1,867 (2004-03-05) # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) # <http://www.presidencia.gov.py/decretos/D1867.pdf> ! Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S ! Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - ! # From Carlos Raul Perasso (2010-02-18): ! # By decree number 3958 issued yesterday ( ! # <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> ! # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf ! # </a> ! # ) ! # Paraguay changes its DST schedule, postponing the March rule to April and ! # modifying the October date. The decree reads: ! # ... ! # Art. 1. It is hereby established that from the second Sunday of the month of ! # April of this year (2010), the official time is to be set back 60 minutes, ! # and that on the first Sunday of the month of October, it is to be set ! # forward 60 minutes, in all the territory of the Paraguayan Republic. ! # ... ! Rule Para 2010 max - Oct Sun<=7 0:00 1:00 S ! Rule Para 2010 max - Apr Sun>=8 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 ------- southamerica ------- *** /tmp/geta19425 Wed Feb 24 08:47:47 2010 --- /tmp/getb19425 Wed Feb 24 08:47:47 2010 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.40 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1364,1371 **** # Decree 1,867 (2004-03-05) # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) # <http://www.presidencia.gov.py/decretos/D1867.pdf> ! Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S ! Rule Para 2005 max - Mar Sun>=8 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 --- 1364,1387 ---- # Decree 1,867 (2004-03-05) # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) # <http://www.presidencia.gov.py/decretos/D1867.pdf> ! Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S ! Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - ! # From Carlos Raul Perasso (2010-02-18): ! # By decree number 3958 issued yesterday ( ! # <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> ! # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf ! # </a> ! # ) ! # Paraguay changes its DST schedule, postponing the March rule to April and ! # modifying the October date. The decree reads: ! # ... ! # Art. 1. It is hereby established that from the second Sunday of the month of ! # April of this year (2010), the official time is to be set back 60 minutes, ! # and that on the first Sunday of the month of October, it is to be set ! # forward 60 minutes, in all the territory of the Paraguayan Republic. ! # ... ! Rule Para 2010 max - Oct Sun<=7 0:00 1:00 S ! Rule Para 2010 max - Apr Sun>=8 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890

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tzcode2010a.tar.gz
by Olson, Arthur David (NIH/NCI) [E] Feb. 26, 2010

Feb. 26, 2010

The file... ftp://elsie.nci.nih.gov/pub/tzcode2010a.tar.gz ...is now available; this reflects the changes circulated last week on the time zone mailing list. Expect tzcode2010b.tar.gz in a week or two (to address the issues identified by kre last week). --ado

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FW: Bangladesh DST
by Olson, Arthur David (NIH/NCI) [E] Feb. 24, 2010

Feb. 24, 2010

I'm forwarding this message from Nobutomo Nakano, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: Nobutomo Nakano [mailto:nobutomo.nakano@Sun.COM] Sent: Friday, February 19, 2010 7:45 To: tz(a)lecserver.nci.nih.gov Subject: Bangladesh DST We received a report from Bangladesh saying that the start/end of Bangladesh DST is incorrect. Currently we have only the Bengali version of the official mail from BTRC which describes the following: "From 2010 each year when local standard time is about to reach March 31 at 10:59:00 PM clocks are turned forward 1 hour (11:59:00 PM) and when local daylight time is about to October 31 at 11:59:00 PM clocks are turned backward 1 hour (10:59:00 PM)." So, DST will start/end 1 minute earlier. Best regards, -Nakano

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Fw: Samoa DST postponed to 2010
by yoshito_umaoka＠us.ibm.com Feb. 24, 2010

Feb. 24, 2010

I'm wondering when the update below will be done in the tz database. As of 2010b, the rule for Pacific/Apia is still - Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2009 Oct 4 -11:00 1:00 WSDT 2010 Mar 28 -11:00 - WST -Yoshito Steffen Thorsen <straen(a)thorsen.priv.no> wrote on 10/16/2009 04:02:55 AM: > We have been in contact with the government of Samoa again, and received > the following info: > > "Cabinet has now approved Daylight Saving to be effected next year > commencing from the last Sunday of September 2010 and conclude first > Sunday of April 2011." > > Background info: > http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html > > Samoa's Daylight Saving Time Act 2009 is available here, but does not > contain any dates: > http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act% > 20%202009%20%28English%29%20-%20Final%207-7-091.pdf > > Best regards, > Steffen Thorsen - timeanddate.com >

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Fiji are not happy with Daylight Saving Time
by Alexander Krivenyshev Feb. 23, 2010

Feb. 23, 2010

Fiji Council of Social Services, Fiji Teachers Union are not happy with Daylight Saving Time... DST should not go beyond February. FCOSS wants daylight saving to stop http://www.radiofiji.com.fj/fullstory.php?id=25851 or http://www.worldtimezone.com/dst_news/dst_news_fiji02.html Alexander Krivenyshev, http://www.WorldTimeZone.com

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maps of the timezones
by info＠pngid.com Feb. 23, 2010

Feb. 23, 2010

Does anyone know of available world map data of the time zones such that I could do a look-up of a latitude/longitude coordinates and know which time zone the coordinate is in? Thanks in advance.

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Bangladesh DST
by Nobutomo Nakano Feb. 20, 2010

Feb. 20, 2010

We received a report from Bangladesh saying that the start/end of Bangladesh DST is incorrect. Currently we have only the Bengali version of the official mail from BTRC which describes the following: "From 2010 each year when local standard time is about to reach March 31 at 10:59:00 PM clocks are turned forward 1 hour (11:59:00 PM) and when local daylight time is about to October 31 at 11:59:00 PM clocks are turned backward 1 hour (10:59:00 PM)." So, DST will start/end 1 minute earlier. Best regards, -Nakano

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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: Paraguay modifies its DST schedule
by Olson, Arthur David (NIH/NCI) [E] Feb. 18, 2010

Feb. 18, 2010

I'm forwarding this message from Carlos Raúl Perasso, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado From: Carlos Raúl Perasso [mailto:crperasso@gmail.com] Sent: Thursday, February 18, 2010 7:59 To: tz(a)lecserver.nci.nih.gov Subject: Paraguay modifies its DST schedule By decree number 3958 issued yesterday (http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf) Paraguay changes its DST schedule, postponing the March rule to April and modifying the October date. The decree reads: ... Art. 1. It is hereby established that from the second Sunday of the month of April of this year (2010), the official time is to be set back 60 minutes, and that on the first Sunday of the month of October, it is to be set forward 60 minutes, in all the territory of the Paraguayan Republic. ... I send the modified Paraguay file with the following rules modified (1-2) and added (3-4): Rule Paraguay 2004 2009 - Oct Sun>=15 0:00 1 D Rule Paraguay 2005 2009 - Mar Sun>=8 0:00 0 S Rule Paraguay 2010 max - Apr Sun>=8 0:00 0 S Rule Paraguay 2010 max - Oct Sun<=7 0:00 1 D Un abrazo desde Paraguay, Carlos Raúl Perasso

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Paraguay modifies its DST schedule
by Carlos Raúl Perasso Feb. 18, 2010

Feb. 18, 2010

By decree number 3958 issued yesterday ( http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf) Paraguay changes its DST schedule, postponing the March rule to April and modifying the October date. The decree reads: ... Art. 1. It is hereby established that from the second Sunday of the month of April of this year (2010), the official time is to be set back 60 minutes, and that on the first Sunday of the month of October, it is to be set forward 60 minutes, in all the territory of the Paraguayan Republic. ... I send the modified Paraguay file with the following rules modified (1-2) and added (3-4): Rule Paraguay 2004 2009 - Oct Sun>=15 0:00 1 D Rule Paraguay 2005 2009 - Mar Sun>=8 0:00 0 S Rule Paraguay 2010 max - Apr Sun>=8 0:00 0 S Rule Paraguay 2010 max - Oct Sun<=7 0:00 1 D Un abrazo desde Paraguay, Carlos Raúl Perasso

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proposed time zone package changes--core dump avoidance
by Arthur David Olson Feb. 14, 2010

Feb. 14, 2010

Below find proposed changes to the time zone package: * asctime.c Set errno to EINVAL and return "??? ??? ?? ??:??:?? ????\n" if asctime_r is called with a NULL struct tm pointer. (Note that asctime_r is called by ctime_r and asctime; asctime is called by ctime.) * localtime.c Set errno to EINVAL and return WRONG if time1 is called with a NULL struct tm pointer; avoid dereference if a NULL struct tm pointer is passed to timelocal, timegm, or timeoff. (Note that time1 is called by mktime, timegm, and timeoff; mktime is called by timelocal.) Barring problems, expect these changes to show up in the ftp package on 2010-02-16 (a day later than usual given a U. S. federal holiday). --ado ------- asctime.c ------- *** /tmp/geta26934 Sat Feb 6 13:23:25 2010 --- /tmp/getb26934 Sat Feb 6 13:23:25 2010 *************** *** 11,17 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.2"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 11,17 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.3"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 91,96 **** --- 91,100 ---- char year[INT_STRLEN_MAXIMUM(int) + 2]; char result[MAX_ASCTIME_BUF_SIZE]; + if (timeptr == NULL) { + errno = EINVAL; + return "??? ??? ?? ??:??:?? ????\n"; + } if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK) wn = "???"; else wn = wday_name[timeptr->tm_wday]; ------- localtime.c ------- *** /tmp/geta26952 Sat Feb 6 13:23:25 2010 --- /tmp/getb26952 Sat Feb 6 13:23:25 2010 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.9"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.10"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 1889,1894 **** --- 1889,1898 ---- int types[TZ_MAX_TYPES]; int okay; + if (tmp == NULL) { + errno = EINVAL; + return WRONG; + } if (tmp->tm_isdst > 1) tmp->tm_isdst = 1; t = time2(tmp, funcp, offset, &okay); *************** *** 1960,1966 **** timelocal(tmp) struct tm * const tmp; { ! tmp->tm_isdst = -1; /* in case it wasn't initialized */ return mktime(tmp); } --- 1964,1971 ---- timelocal(tmp) struct tm * const tmp; { ! if (tmp != NULL) ! tmp->tm_isdst = -1; /* in case it wasn't initialized */ return mktime(tmp); } *************** *** 1968,1974 **** timegm(tmp) struct tm * const tmp; { ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, 0L); } --- 1973,1980 ---- timegm(tmp) struct tm * const tmp; { ! if (tmp != NULL) ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, 0L); } *************** *** 1977,1983 **** struct tm * const tmp; const long offset; { ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, offset); } --- 1983,1990 ---- struct tm * const tmp; const long offset; { ! if (tmp != NULL) ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, offset); }

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30 Rock
by Arthur David Olson Feb. 12, 2010

Feb. 12, 2010

In the "30 Rock" episode "Anna Howard Shaw Day" (first broadcast 2010-02-11), Jack Donaghy's date realizes that a Geneva-to-New-York business phone call received in the evening must be fake given the difference in local times. (Expect the above in the next version of tz-art.htm.) --ado

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Re: proposed time zone package changes (revised)
by Arthur David Olson Feb. 7, 2010

Feb. 7, 2010

Here are the proposed changes, revised to incorporate KRE's suggestion on how to handle NULLs passed to asctime_r. --ado ------- asctime.c ------- *** /tmp/geta27327 Sat Feb 6 14:46:35 2010 --- /tmp/getb27327 Sat Feb 6 14:46:35 2010 *************** *** 11,17 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.2"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 11,17 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.4"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 91,96 **** --- 91,101 ---- char year[INT_STRLEN_MAXIMUM(int) + 2]; char result[MAX_ASCTIME_BUF_SIZE]; + if (timeptr == NULL) { + errno = EINVAL; + (void) strcpy(buf, "??? ??? ?? ??:??:?? ????\n"); + return buf; + } if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK) wn = "???"; else wn = wday_name[timeptr->tm_wday]; ------- localtime.c ------- *** /tmp/geta27345 Sat Feb 6 14:46:35 2010 --- /tmp/getb27345 Sat Feb 6 14:46:35 2010 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.9"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.10"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 1889,1894 **** --- 1889,1898 ---- int types[TZ_MAX_TYPES]; int okay; + if (tmp == NULL) { + errno = EINVAL; + return WRONG; + } if (tmp->tm_isdst > 1) tmp->tm_isdst = 1; t = time2(tmp, funcp, offset, &okay); *************** *** 1960,1966 **** timelocal(tmp) struct tm * const tmp; { ! tmp->tm_isdst = -1; /* in case it wasn't initialized */ return mktime(tmp); } --- 1964,1971 ---- timelocal(tmp) struct tm * const tmp; { ! if (tmp != NULL) ! tmp->tm_isdst = -1; /* in case it wasn't initialized */ return mktime(tmp); } *************** *** 1968,1974 **** timegm(tmp) struct tm * const tmp; { ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, 0L); } --- 1973,1980 ---- timegm(tmp) struct tm * const tmp; { ! if (tmp != NULL) ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, 0L); } *************** *** 1977,1983 **** struct tm * const tmp; const long offset; { ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, offset); } --- 1983,1990 ---- struct tm * const tmp; const long offset; { ! if (tmp != NULL) ! tmp->tm_isdst = 0; return time1(tmp, gmtsub, offset); }

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Re: proposed time zone package changes (revised)
by Arthur David Olson Feb. 6, 2010

Feb. 6, 2010

> You could avoid the casing: > return strcpy(buf, "??? ??? ?? ??:??:?? ????\n"); The cast can also be avoided in another part of the asctime.c code; the latest is below. --ado ------- asctime.c ------- *** /tmp/geta27586 Sat Feb 6 15:08:55 2010 --- /tmp/getb27586 Sat Feb 6 15:08:55 2010 *************** *** 11,17 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.2"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 11,17 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)asctime.c 8.5"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 91,96 **** --- 91,100 ---- char year[INT_STRLEN_MAXIMUM(int) + 2]; char result[MAX_ASCTIME_BUF_SIZE]; + if (timeptr == NULL) { + errno = EINVAL; + return strcpy(buf, "??? ??? ?? ??:??:?? ????\n"); + } if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK) wn = "???"; else wn = wday_name[timeptr->tm_wday]; *************** *** 113,122 **** timeptr->tm_mday, timeptr->tm_hour, timeptr->tm_min, timeptr->tm_sec, year); ! if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime) { ! (void) strcpy(buf, result); ! return buf; ! } else { #ifdef EOVERFLOW errno = EOVERFLOW; #else /* !defined EOVERFLOW */ --- 117,125 ---- timeptr->tm_mday, timeptr->tm_hour, timeptr->tm_min, timeptr->tm_sec, year); ! if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime) ! return strcpy(buf, result); ! else { #ifdef EOVERFLOW errno = EOVERFLOW; #else /* !defined EOVERFLOW */

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Russia may set clocks back one hour instead of going into DST
by Steffen Thorsen Feb. 3, 2010

Feb. 3, 2010

According to this article in Pravda, Russia might stop observing DST, and instead go back one hour in March to the time zones they were at until year 1930. http://english.pravda.ru/society/stories/03-02-2010/111995-time_zone-0 Best regards, Steffen Thorsen - timeanddate.com

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