Since the borders are political rather than purely geographical, the obvious answer is to put the data in the GPS receiver's map database. It has both the relevant borderlines and the most frequent update strategy.
On Fri, Mar 6, 2020 at 6:36 PM Steve Allen <s...@ucolick.org> wrote: > On Fri 2020-03-06T10:10:28-0500 GERRY ASHTON hath writ: > > I just got a 2020 car which offers to sync the clock on the > > instrument panel to the GPS receiver. But the time zone and > > observance of DST must be set manually. In principle, if the position > > is known, the time zone and DST can be looked up. > > Take this over to the IANA tz list where even there they will assert > that the last sentence is beyond their purview and therefore "somebody > else's problem". Better strategy is to sync the clock to cell phone > signals and let that "somebody else" be the phone company who are at > least being paid to address the problem. > > -- > Steve Allen <s...@ucolick.org> WGS-84 (GPS) > UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat > +36.99855 > 1156 High Street Voice: +1 831 459 3046 Lng > -122.06015 > Santa Cruz, CA 95064 https://www.ucolick.org/~sla/ Hgt +250 m > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
