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[PROPOSED PATCH 1/2] Support -Dtime_tz=time_t
by Paul Eggert March 11, 2015

March 11, 2015

* private.h (tz_time_t), NEWS: Move typedef earlier. (Problem reported by Bradley White.) --- NEWS | 2 ++ private.h | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/NEWS b/NEWS index 1e74bfd..89b5349 100644 --- a/NEWS +++ b/NEWS @@ -34,6 +34,8 @@ Unreleased, experimental changes Fix integer overflow bug in reference 'mktime' implementation. (Problem reported by Jörg Richter.) + Allow -Dtime_tz=time_t compilations. (Problem reported by Bradley White.) + Changes affecting commentary Cite the recent Mexican decree changing Quintana Roo's time zone. diff --git a/private.h b/private.h index efa1bdf..b9429ae 100644 --- a/private.h +++ b/private.h @@ -308,6 +308,8 @@ typedef unsigned long uintmax_t; static time_t sys_time(time_t *x) { return time(x); } # endif +typedef time_tz tz_time_t; + # undef ctime # define ctime tz_ctime # undef ctime_r @@ -341,8 +343,6 @@ static time_t sys_time(time_t *x) { return time(x); } # undef timeoff # define timeoff tz_timeoff -typedef time_tz time_t; - char *ctime(time_t const *); char *ctime_r(time_t const *, char *); double difftime(time_t, time_t); -- 2.1.0

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signed overflow
by Richter, Jörg March 10, 2015

March 10, 2015

In time2sub() there is this code: } else { lo = 1; for (i = 0; i < (int) TYPE_BIT(time_t) - 1; ++i) lo *= 2; hi = -(lo + 1); } The last *= 2 will overflow a signed integer time_t. This can be fixed with “lo = -1” instead of “lo = 1”. This change seems to be consistent with the variable names. - Jörg

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[PROPOSED PATCH] Mongolia resumes DST in 2015
by Paul Eggert March 10, 2015

March 10, 2015

* asia (Mongol), NEWS: Mongolia will start observing DST again this year, from the last Saturday in March at 02:00 to the last Saturday in September at 00:00. (Thanks to Ganbold Tsagaankhuu.) --- NEWS | 4 ++++ asia | 9 +++++++++ 2 files changed, 13 insertions(+) diff --git a/NEWS b/NEWS index d21c1fa..5aca1f6 100644 --- a/NEWS +++ b/NEWS @@ -4,6 +4,10 @@ Unreleased, experimental changes Changes affecting future time stamps + Mongolia will start observing DST again this year, from the last + Saturday in March at 02:00 to the last Saturday in September at 00:00. + (Thanks to Ganbold Tsagaankhuu.) + Palestine will start DST on March 28, not March 27. Also, correct the fall 2014 transition from September 26 to October 24. Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) diff --git a/asia b/asia index fa7978e..756e3d0 100644 --- a/asia +++ b/asia @@ -1904,6 +1904,13 @@ Zone Indian/Maldives 4:54:00 - LMT 1880 # Male # was at the start of 2008-03-31 (the day of Steffen Thorsen's report); # this is almost surely wrong. +# From Ganbold Tsagaankhuu (2015-03-10): +# It seems like yesterday Mongolian Government meeting has concluded to use +# daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of +# March 2015, daylight saving time starts. And 00:00AM of last Saturday of +# September daylight saving time ends. Source: +# http://zasag.mn/news/view/8969 + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S Rule Mongol 1983 only - Oct 1 0:00 0 - @@ -1924,6 +1931,8 @@ Rule Mongol 1984 1998 - Sep lastSun 0:00 0 - Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S Rule Mongol 2001 2006 - Sep lastSat 2:00 0 - Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S +Rule Mongol 2015 max - Mar lastSat 2:00 1:00 S +Rule Mongol 2015 max - Sep lastSat 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta -- 2.1.0

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Daylight Saving Time, the movie
by Steve Jones March 10, 2015

March 10, 2015

Folks: It's pretty rare that humor is on-topic in this list, but I doubt anyone would disagree this is a clear exception, especially given the timing: https://www.youtube.com/watch?v=k4EUTMPuvHo Regards, Steve Jones []

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The Pi Day of the century
by Even Scharning March 7, 2015

March 7, 2015

The Pi Day of the century is only a few days away! One day every century, the numbers of the current month, day, year, hour, minute and second line up to match the first 10 digits of the mathematical constant pi: 3.14.15 9:26:53. We made a special clock for Pi Day, with date and time in "pi format". Please take a minute to check it out! http://time.is/pi_day Any feedback is appreciated. Even Scharning Time.is - exact time for any place on Earth http://time.is/

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historic Oslo times
by Meno Hochschild March 6, 2015

March 6, 2015

Recently I noticed following strange detail of Europe/Oslo during the years 1940-1942: The site http://www.timeanddate.com/time/zone/norway/oslo reports for these years that Oslo kept summer time between 1940-08-10 23:00 and 1942-11-02 03:00. But I cannot find a way in tz-data how to construct it. Maybe I have overlooked something. Rule Norway 1916 only - May 22 1:00 1:00 S Rule Norway 1916 only - Sep 30 0:00 0 - Rule Norway 1945 only - Apr 2 2:00s 1:00 S Rule Norway 1945 only - Oct 1 2:00s 0 - Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - Rule Norway 1965 only - Apr 25 2:00s 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 1:00 Norway CE%sT 1940 Aug 10 23:00 1:00 C-Eur CE%sT 1945 Apr 2 2:00 1:00 Norway CE%sT 1980 1:00 EU CE%sT The Norway-rules do not catch the year 1940, so cannot indicate any summer time until 1940-08-10. Then the C-Eur-rule takes effect but see here: Rule C-Eur 1940 only - Apr 1 2:00s 1:00 S Rule C-Eur 1942 only - Nov 2 2:00s 0 - The rule for 1940 cannot be applied because 1st of Apr is clearly before the UNTIL-date of zone line in question when changing from Norway-rule to C-Eur-rule. I assume we are missing an extra Norway-rule for 1940 only changing to summer time on 1940-08-10 and have then to shift the UNTIL-date in second ZONE line a little bit (for example to 1941). Thanks in advance for any help Meno Hochschild

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Correct timezone for the country of India
by Sujay Phadke March 6, 2015

March 6, 2015

Hello, I was browsing through the tz database and I don't see a single city in the country of India for the timezone setting. Would you enlighten me as to why it is so? I am specifically looking at this: http://en.wikipedia.org/wiki/List_of_tz_database_time_zones Could you please add "New Delhi" or "Mumbai" to the +5:30 UTC timezone list? Secondly, what is this "Indian/<island names> ? This is some old relic information that needs to be updated. None of those island have anything to do with India, so why keep the naming convention? I did go through one discussion in your achives: http://mm.icann.org/pipermail/tz/2012-December/018488.html, but I couldn't see any reason why Mumbai or New Delhi cannot be added. I also could not find Asia/Calcutta in the list on current tz database. If I'm reading this wrong, please point me to the correct link. Thank you. Regards, Sujay

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Apparent Inconsistency in Russia Data
by Hank W. March 6, 2015

March 6, 2015

I noticed an apparent inconsistency among the Russia data in the Europe data file. Regarding the following line under Europe/Volgograd: 3:00 Russia MSK 2011 Mar 27 2:00s should it not be... 3:00 Russia MSK/MSD 2011 Mar 27 2:00s ? Hank W. of Austin, Texas, U.S.A.

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Palestine DST postponed by a day
by Steffen Thorsen March 5, 2015

March 5, 2015

Sources such as http://www.alquds.com/news/article/view/id/548257 and http://www.raya.ps/ar/news/890705.html say Palestine areas will start DST on 2015-03-28 00:00 which is one day later than expected. Our wrap-up: http://www.timeanddate.com/news/time/palestine-starts-dst-2015.html As a side note, some sources report that Kuwait may introduce DST. According to media reports like http://www.kuna.net.kw/ArticleDetails.aspx?id=2421216&Language=ar the authorities are considering advancing clocks by 2 hours every year. Best regards, Steffen Thorsen - timeanddate.com

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Paraguay change DST 22/03/2015
by Juan Carlos YJ. Lin March 4, 2015

March 4, 2015

Attending to Act 1.264, Paraguay change 4th sunday de March the DST, delay 1:00 hs Juan Carlos Lin Unisoft S.A. +595-993-288330 --------------------------------------------------- "Antes de imprimir, recuC)rdese de su compromiso con el Medio Ambiente" "Aviso: Este mensaje es dirigido para su destinatario y contiene informaciones que no pueden ser usadas por otras personas que no sean su(s) destinatario(s). La retransmisiC3n del contenido no estC! autorizada fuera del contexto de su envC-o y a quien corresponde. El uso no autorizado de la informaciC3n en este mensaje se halla penado por las leyes vigentes en todo el mundo. Si ha recibido este mensaje por error, por favor bC3rrala y notifique al remitente en la brevedad posible. El contenido de este mensaje no es responsabilidad de la Empresa y debe ser atribuido siempre a su autor. Gracias."

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