On 10/05/2018 14:23, Vlad Khorsun via Firebird-devel wrote: > >>> Look how MSK time zone was changed at 2014.10.26 >>> >>> https://www.timeanddate.com/time/zone/russia/moscow >>> >>> I think about something like this: >>> >>> ID Name Valid from Offset >>> ... MSK 2011.03.27 02:00 +4 >>> ... MSK 2014.10.26 02:00 +3 >>> >>> Is it makes sence ? >> >> America/Sao_Paulo changes every year because DST (when starting to -02 >> and ending to -03). > > The case is not about DST. It is about *change of rule* for particular > time zone. Does you read table at link above ? > > If i understand it correct: > > 2010.03.01 04:00 MSK == 2010.03.01 00:00 UTC, > 2013.03.01 04:00 MSK == 2013.03.01 00:00 UTC, but > 2016.03.01 04:00 MSK == 2016.03.01 01:00 UTC > In practical terms, it's the same as a DST change.
A DST is nothing different than a "rule change" and another "rule change" every year. Adriano ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
