[tz] Rule Russia incorrect
Alan Barrett
apb at cequrux.com
Mon Oct 31 17:22:04 UTC 2011
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)
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