[tz] Time zone selection

Lester Caine lester at lsces.co.uk
Fri Apr 22 17:44:30 UTC 2016

On 22/04/16 17:13, Random832 wrote:
> On Fri, Apr 22, 2016, at 12:04, Matt Johnson wrote:
>> > I don't really like the zone-now.tab idea, because it would just reflect
>> > things as of the date of the tzdata release, which is somewhat arbitrary
>> > with respect to the scenario.
> How is that different from the fact that literally everything else in
> the release reflects things as of the date of the release?
> The point is that the zones that are "merged" are _obsolete_, and
> therefore no-one who newly selects their timezone after that date
> "should" be using them anymore if they don't need historical timestamps.

One of the complaints has been that there are too many sets of timezone
rules, but combining several zones that NOW have the same set of rules
misses the point that there IS a lot of historic material and looking
back at even just as far as the 2nd world war requires subtle
differences. It would seem that the historic changes in Russian
locations are also now getting accurate amendments to the rules, and
simply hiding that information in 'backzone' needs to be clearly
displayed when people using calendars that have 'simplified things' by
stripping anything prior to 1970. Something substantial to prevent users
from being given any offsets when the data is not available.

Lester Caine - G8HFL
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