Translate Windows timezone to TZID?

[Mark Davis]

I will have to dig out what API those come from; Windows does not make it at
all easy to get a list of the available zones.

‎Mark

----- Original Message ----- 
From: "Masayoshi Okutsu" <Masayoshi.Okutsu at sun.com>
To: "Mark Davis" <mark.davis at jtcsv.com>
Cc: <DCantor at shore.net>; <tz at lecserver.nci.nih.gov>
Sent: Thursday, June 16, 2005 18:47
Subject: Re: Translate Windows timezone to TZID?


> What are the Windows IDs in the table? When I worked on platform time
> zone detection issues for Java on Windows, a problem was that Windows
> didn't have any notion of time zone IDs. So, I used Time Zones registry
> keys for the mapping support, but I had to ask Microsoft not to localize
> those registry keys.
>
> Thanks,
> Masayoshi
>
> Mark Davis wrote:
>
> >We have *a* mapping of Windows IDs in CLDR. See
> >
>
>http://unicode.org/cldr/data/diff/supplemental/supplemental.html#windows___
tzid
> >
> >While we have tried to make it accurate, it is difficult to get a good
match
> >because the Windows IDs encompass what would be many different TZIDs.
> >
> >‎Mark
> >
> >----- Original Message ----- 
> >From: "Dave Cantor" <dcantor at shore.net>
> >To: <tz at lecserver.nci.nih.gov>
> >Sent: Tuesday, June 14, 2005 13:01
> >Subject: Translate Windows timezone to TZID?
> >
> >
> >
> >
> >>I've been thinking about this problem for a while.  Anyone have
> >>any thoughts?
> >>
> >>Suppose you have a portable computer running Microsoft Windows
> >>(whatever version you dislike least) which you take with you when
> >>you travel.  When you power it up and you're in a timezone
> >>different from the one you last used it in, you use Windows'
> >>Adjust Date/Time dialogue to set the correct timezone.
> >>
> >>Now Windows has bogus names for the zones, like
> >>"Dlt"="GMT Daylight Time"
> >>"Std"="GMT Standard Time"
> >>"Dlt"="Hawaiian Daylight Time"
> >>"Std"="Hawaiian Standard Time"
> >>which you can read out of the registry.
> >>
> >>Suppose I want to get the correct name of the time zone
> >>(from which maybe I'll generate the correct abbreviation).
> >>So for GMT, the proper strings would be
> >>"Greenwich Mean Time" for standard time, and there is no daylight
> >>time.  For Hawaii, I believe that's properly Hawaiian-Aleutian
> >>Standard Time; again no daylight observance.
> >>
> >>Is there a way anyone can think of to map the incorrect
> >>Windows text strings to correct text strings algorithmically?
> >>
> >>(Too bad Windows doesn't have the exemplar city name in its
> >>database of time zones.)
> >>
> >>Dave Cantor
> >>
> >>--
> >>David A. Cantor
> >>Groton, CT  06340-3731      DCantor at shore.net
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
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