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.