February 2013 - tz - lists.iana.org

Russia plans to switch back to the "permanent winter time" in 2013
by Alexander Krivenyshev Feb. 23, 2013

Feb. 23, 2013

According to the Russian news: http://izvestia.ru/news/544409 Russia plans to switch back to the "permanent winter time" by the end of the year (2013). New bill will be introduce to the State Duma shortly. (in Russian) http://izvestia.ru/news/544409 or http://www.worldtimezone.com/dst_news/dst_news_russia053.html Alexander Krivenyshev, http://www.worldtimezone.com

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Re: [tz] [PATCH] Updates for Chile 2013
by Juan Correa Feb. 21, 2013

Feb. 21, 2013

On Thu, Feb 21, 2013 at 4:54 AM, <tz-request(a)iana.org> wrote: > Message: 5 > Date: Thu, 21 Feb 2013 07:42:40 +0700 > From: Robert Elz <kre(a)munnari.OZ.AU> > Subject: Re: [tz] [PATCH] Updates for Chile 2013 > To: Petr Machata <pmachata(a)redhat.com> > Cc: tz(a)iana.org > Message-ID: <16688.1361407360(a)eos.noi.kre.to> > Content-Type: text/plain; charset=iso-8859-1 > > Date: Wed, 20 Feb 2013 22:55:04 +0100 > From: Petr Machata <pmachata(a)redhat.com> > Message-ID: <m2ehgaljwl.fsf(a)redhat.com> > > | I?decided to apply the transition dates to single years only--the DST > | policy is reevaluated every year anyway. > > I think that's a mistake - you're guaranteeing that the data is going > to be wrong, rather than simply making it likely. > > I'd suggest that the data be changed as ... > > --- southamerica.was 2012-07-25 21:13:46.000000000 +0700 > +++ southamerica 2013-02-21 07:37:16.000000000 +0700 > @@ -1277,10 +1277,8 @@ > Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - > Rule Chile 2011 only - May Sun>=2 3:00u 0 - > Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S > -Rule Chile 2012 only - Apr Sun>=23 3:00u 0 - > -Rule Chile 2012 only - Sep Sun>=2 4:00u 1:00 S > -Rule Chile 2013 max - Mar Sun>=9 3:00u 0 - > -Rule Chile 2013 max - Oct Sun>=9 4:00u 1:00 S > +Rule Chile 2012 max - Apr Sun>=23 3:00u 0 - > +Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S > # IATA SSIM anomalies: (1992-02) says 1992-03-14; > # (1996-09) says 1998-03-08. Ignore these. > # Zone NAME GMTOFF RULES FORMAT [UNTIL] > > That is, it turns out that the rules we inserted for 2012 apply for 2013 > as well (except we were conservative last year, and assumed the change then > was just a one year thing, and put the older dates back for 2013). > > So, the patch above just assumes that the 2012/2013 strategy will continue > forwards, which it might ... it is also possible that it won't, and we will > need to change it again next year (or even again later this year) but > some kind of reasonable guess is better than simply assuming that summer > time > is going to start next September, and then never end. > > kre > I'm concerned about extending the new rules from 2013 to the future, as the decree that changes the DST this year explicitly says these changes will be valid only on this year; and doesn't void the rules set in 1970 (DST from September to March). I think it would be better to stick with a "conservative" approach, as legally on 2014 DST will end on March until further notice. -- Juan Correa Poblete PS Labs (http://www.pslabs.cl)

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Re: [tz] tz Digest, Vol 17, Issue 12
by Glenn Eychaner Feb. 21, 2013

Feb. 21, 2013

The "official instructions", which explain how Easter Island (b) and Antarctica and the continent (a) work as well, can now be found at: http://www.horaoficial.cl/cambio.htm Google Translate does a pretty good job on this page, so I won't bother to translate the whole thing. Also, unfortunately, I won't have time to create a patch this week, so if someone else could do so, I'd appreciate it. Hey, at least they gave us more than a few days notice this year. Thanks, -G. > ------------------------------ > Date: Sun, 17 Feb 2013 07:43:03 -0000 > From: "Hank W." <hankw1(a)austin.rr.com> > Subject: Re: [tz] Chile DST extended > > I assume that Easter Island and Palmer Station in Antarctica are following > this year's special schedule as well. Correct? > > -----Original Message----- > From: tz-bounces(a)iana.org [mailto:tz-bounces@iana.org] On Behalf Of Steffen > Thorsen > Sent: Friday, February 15, 2013 18:53 > To: tz(a)iana.org > Subject: [tz] Chile DST extended > > According to several news sources, Chile has extended DST this year, they > will end DST later and start DST earlier than planned. They hope to save > energy. > > The new end date is 2013-04-28 00:00 and new start date is 2013-09-08 00:00. > > One such news source: > http://www.elboyaldia.cl/node/21913 > > Best regards, > Steffen Thorsen - timeanddate.com -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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[PATCH 1/7] Fix bug with two-in-one-month time changes in 2010 in Egypt.
by Paul Eggert Feb. 21, 2013

Feb. 21, 2013

[Patch by Arthur David Olson.] Problem reported by Paul Eggert in <http://mm.icann.org/pipermail/tz/2013-January/018532.html>. * zic.c (stringzone): Check for day of month too, when finding latest rule. --- zic.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/zic.c b/zic.c index a5202a1..806e613 100644 --- a/zic.c +++ b/zic.c @@ -1851,7 +1851,9 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount) rp = &zp->z_rules[i]; if (stdrp == NULL || rp->r_hiyear > stdrp->r_hiyear || (rp->r_hiyear == stdrp->r_hiyear && - rp->r_month > stdrp->r_month)) + (rp->r_month > stdrp->r_month || + (rp->r_month == stdrp->r_month && + rp->r_dayofmonth > stdrp->r_dayofmonth)))) stdrp = rp; } if (stdrp != NULL && stdrp->r_stdoff != 0) -- 1.7.10.4

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Gaza in 2013 -- anything official?
by Petr Machata Feb. 20, 2013

Feb. 20, 2013

Hi there, timeanddate.com lists for Gaza in 2013 what appears to be extension of 2012 rules[1]. The pattern in the last several years has been mostly that there is no pattern. The dates were all over the place, Ramadan even kicked in once. I take it that the dates at [1] are simply a guess, but by any chance, does anyone have an information about what should the rules in 2013 be? [1] http://www.timeanddate.com/worldclock/clockchange.html?n=702 Thanks, PM

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Official information about Chile daytime changes
by Felipe Sologuren Feb. 18, 2013

Feb. 18, 2013

http://www.horaoficial.cl/cambio.htm http://translate.google.com/translate?hl=es-419&sl=es&tl=en&u=http%3A%2F%2F… -- Felipe Sologuren Newtenberg.com

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Chile DST extended
by Steffen Thorsen Feb. 17, 2013

Feb. 17, 2013

According to several news sources, Chile has extended DST this year, they will end DST later and start DST earlier than planned. They hope to save energy. The new end date is 2013-04-28 00:00 and new start date is 2013-09-08 00:00. One such news source: http://www.elboyaldia.cl/node/21913 Best regards, Steffen Thorsen - timeanddate.com

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Chile time changes announced
by Glenn Eychaner Feb. 15, 2013

Feb. 15, 2013

http://www.diarioeldia.cl/articulo/entregan-fechas-cambio-hora-este-2013 http://www.emol.com/noticias/economia/2013/02/15/584242/horario-de-invierno… http://papel.doe.cl/20130215/ In short, the clocks will go back at the midnight between Saturday the 27th and Sunday the 28th of April, and forward the midnight between Saturday the 7th and Sunday the 8th of September. Added two additional links to the more widely read El Mercurio, and to the Diario Oficial (flash-app) for 15 Feb, which conatins the actual text of the Decreto Supremo and clarifies that indeed this change is for this year only yet again. I will prepare a patch Monday if no one else does so first. -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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Chile time changes announced
by Glenn Eychaner Feb. 15, 2013

Feb. 15, 2013

http://www.diarioeldia.cl/articulo/entregan-fechas-cambio-hora-este-2013 In short, the clocks will go back at the midnight between Saturday the 27th and Sunday the 28th of April, and forward the midnight between Saturday the 7th and Sunday the 8th of September. I will prepare a patch Monday if no one else does so first. -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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[Chile] DST dates changed (again)
by Juan Correa Feb. 15, 2013

Feb. 15, 2013

It's been just published the official decree, stating new dates for the end and start of DST Daylight Saving time will end on "last saturday of april at 24:00" (27/Apr) and shall start on "first saturday of september" (07/Sep) at the same hour. Also, the decree says these rules will be valid only on 2013 Source: Decreto 153/2013, Ministerio del Interior y Seguridad Pública (LeyChile: www.leychile.cl/Consulta/m/norma_plana?idNorma=1048851&org=bleyes_r%3Ft_n%3…, in Spanish)

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