Timezones as shapefiles (was: Re: Chinese timezones 1970)

Hancock, David (dhancock) dhancock at arinc.com
Sun Sep 14 11:47:25 UTC 2008

Our group is relatively new to the tzdb and very new to GIS, but we do know
that having timezone boundaries as shapefiles would be very useful.

Is there a comprehensive source for timezones as shapefiles? It looks like a
tremendous amount of work to do them--just wondering if it's all (or mostly)
done already.

Thanks, and
David Hancock | dhancock at arinc.com

From: Eric Muller <emuller at adobe.com>
Organization: Adobe Systems Incorporated
Reply-To: <tz at elsie.nci.nih.gov>
Date: Sat, 13 Sep 2008 19:10:24 -0700
To: <tz at lecserver.nci.nih.gov>
Subject: Re: Chinese timezones 1970
Resent-From: <tz at elsie.nci.nih.gov>
Resent-Date: Sat, 13 Sep 2008 22:10:33 -0400 (EDT)

Jesper Norgaard Welen wrote:
> I have investigated the timezones around 1970 on the
> http://www.astro.com/atlas site, and here are the results. I am attaching a
> GIF file of the map I have built based on this information.

Thanks to this data, I have put together a map in shapefile format for
the timezone of China. It's available along with the recipe and
necessary data files (including a mapping county->tz timezone and a
concise description of the zones) at <http://efele.net/maps/tz/ch/>.

Comments welcome,

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