Tim, In the mean-time I found http://www.gadm.org/country which has stuff I am chewing on now. Thanks Jim From: Tim Parenti [mailto:tim@timtimeonline.com] Sent: Thursday, October 16, 2014 12:25 PM To: Marvel, Jim (CPCOE) Cc: tz@iana.org; Eric Muller Subject: Re: [tz] Carving shapes Jim, The commentary in the relevant portions of the 'europe' file attempts to detail the scope of each zone, in terms of the political subdivisions of Russia. Back in August, Blake Crosby and I had a brief discussion about how to find good geometries for these subdivisions, but we hadn't found much. https://github.com/blakecrosby/tz-map/issues/1 Eric Muller has created shapefiles in the past for some versions of tz data. On his http://efele.net/maps/tz/russia/ page, he shares an "ingredients" file at http://efele.net/maps/tz/russia/tz_russia_ingredients.zip which may be of some use. -- Tim Parenti On 16 October 2014 12:00, Marvel, Jim (CPCOE) <Jim.Marvel@honeywell.com<mailto:Jim.Marvel@honeywell.com>> wrote: Also, how to determine borders for Zabaykalsky Krai From: Marvel, Jim (CPCOE) Sent: Thursday, October 16, 2014 11:22 AM To: 'tz@iana.org<mailto:tz@iana.org>' Subject: Carving shapes How to determine borders for these new zones? Two zones are added: Asia/Chita (split from Asia/Yakutsk, and also with two hours subtracted) and Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour subtracted). thanks Jim Marvel