[tz] Correcting daylight-savings time for central Missouri prior to 1967

Phake Nick c933103 at gmail.com
Sat Nov 24 20:41:04 UTC 2018

Actually it do support union/unconnected space, it is also reflected in the
image but you need a magnifying glass to see that (or read the code
directly). Also it seems like it only have Hopi reservation enclave but not
amy others.
2018-11-25 03:51, Guy Harris <guy at alum.mit.edu> wrote:

> On Nov 24, 2018, at 11:27 AM, Brian Inglis <
> Brian.Inglis at SystematicSw.ab.ca> wrote:
> > On 2018-11-23 16:21, Guy Harris wrote:
> >> On Nov 23, 2018, at 3:05 PM, Steve Allen <sla at ucolick.org> wrote:
> >>> On Fri 2018-11-23T15:00:31-0800 Guy Harris hath writ:
> >>>> So there is no requirement that a tzdb region be a connected space?
> >>> I think not.
> >> Hopefully the makers of shape files for tzdb regions have taken that
> into account.
> >
> > Check Arizona (AZ), USA - which does not observe DST - Navajo Nation in
> > observes DST as it also spans NW New Mexico, SE Utah, SW Colorado and
> those
> > states observe DST - the Hopi Reservation enclave and its smaller
> exclaves
> > within Navajo Nation do not observe DST.
> > If these areas are appropriately flagged or displayed, the data should
> be good.
> So those would be the America/Phoenix tzdb region, which should include
> the non-Navajo Nation parts of Arizona, including the Hopi Reservation, and
> the America/Denver tzdb region, which should include the Navajo Nation.
> That means that the America/Phoenix region is not a connected space.
> This image:
> https://raw.githubusercontent.com/evansiroky/timezone-boundary-builder/master/2018g.png
> doesn't appear to reflect that; hopefully the timezone boundary builder:
>         https://github.com/evansiroky/timezone-boundary-builder
> supports regions built by adding arbitrary connected spaces to, and
> removing arbitrary connected spaces from, an initial connected space.
> I'll let Deborah Goldsmith address whether Apple's regions (used for the
> macOS/iOS/etc. location-to-tzdb-region mapping) can, and do, handle this.
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