Offset for America/Chihuahua possibly wrong?

26 Sep
2008
26 Sep
'08
8:43 p.m.
Our company provides flight-support services to business aviation, and we use the TZ database from our web-based flight-planning pages to allow date entry in local or Zulu time. One of our Mexico-based customers called to say our offset was wrong for the airport MMHO (Hermisillo). We're getting GMT-6 from our Olson database. We called two places at that airport, and both report that they are GMT-7. The specific timezone reference is America/Chihuahua, and we are using the 2008f dataset. Does anyone have any clues about the America/Chihuahua offset? It's not due to go off DST until 10/26, but it appears to be off by one hour NOW. Thanks for any assistance you can provide. Cheers! -- David Hancock | dhancock@arinc.com
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Hancock, David (DHANCOCK)