Casper, WY | Cheyenne, WY | Evanston, WY | Gillette, WY | Green River, WY | Jackson, WY | Laramie, WY | Medicine Bow, WY | Rawlings, WY | Riverton, WY | Sheridan, WY | Torrington, WY | Upton, WY | Cody Wyoming Community, WY
Like most states in the USA, Daylight-Saving Time ( DST ) is observed in Wyoming , where the time is shifted forward by 1 hour to Mountain Daylight Time ( MDT ); which is 6 hours behind Greenwich Mean Time ( GMT-6 ).
After the Summer months the time in Wyoming is shifted back by 1 hour to US Mountain Standard Time (MST) or ( GMT-7 )
Sunday 8 March 2015 2am local time
until Sunday 1 November 2015 2am local time
see: Daylight-Saving-Time.com for details
USA and Canada Standard Time Date schedules here