[tz] [PROPOSED] Use "PST/PDT" for Philippine time
eggert at cs.ucla.edu
Sun Jun 24 16:24:38 UTC 2018
Michael H Deckers wrote:
> Fine if this were a generally applied guideline -- but it is not,
> see eg America/Adak, Indonesia, and many others. When is this guideline
> applied, and when not?
The guideline is supposed to be applied reasonably consistently for clear-cut
cases such as the Philippines. Alaska and Indonesia are more complicated, since
they are not merely a question of what's the name of a time zone; they are also
a question of time zone boundaries moving, and where it's not so clear what is
being named. For example, a historian today would be unlikely to write "Sitka
observed Alaska Standard Time in 1984" because in 1984 the Alaska time zone
boundaries were quite different and Sitka was then in the geographically small
part of Alaska that was in the same time zone as the Yukon.
Unfortunately I don't see a good solution for these more-complicated cases, and
am reluctant to change the data if it's likely this would introduce as much or
more confusion than it would alleviate.
> And all that does not justify the resurrection of an invented abbreviation.
First, for the Phillippines it's no longer an abbreviation that exists only
because we invented it. It's taken on a life of its own in reliable sources and
in national law. And second, I doubt whether these sources got "PST" from tzdb,
since tzdb has been using "PHST" for over two decades and used "PST" only
briefly before that. Most likely it was independent reinvention.
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