On Mon, 31 Oct 2011, Petr Machata wrote:
So on Mar 27, Moscow stopped observing ruleset Russia, and instead changed to permanent offset of +4:00. It's done this way, because permanent daylight saving is not really _saving_, it's simply a new zone.
Yes, that what the tzdata files say. But is that an accurate reflection of what happened on the ground? The relevant legislation hadn't yet been passed on 27 March 2011. Wouldn't it be more accurate to say that there was a transition to daylight savings time on 27 March 2011, and then another transition from {base offset = +03:00, extra DST offset = 01:00} to {base offset = +04:00, no DST} on some later date when the new legislation took effect? (And for some timezones, several back and forth transitions as the legislators changed their minds, each transition affecting our notion of whether or not DST was in effect, but not affecting the setting of clocks that lack isdst indicators and timezone abbreviation indicators.) --apb (Alan Barrett)