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
Cheers!
--
David Hancock | dhancock@arinc.com

---

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