Wyoming operates on Mountain Standard Time (MST) during winter months, which is 7 hours behind Coordinated Universal Time (UTC-7). During daylight saving time, observed from the second Sunday in March to the first Sunday in November, Wyoming switches to Mountain Daylight Time (MDT), which is UTC-6.
All of Wyoming follows the same time zone. Major cities including Cheyenne, Casper, Laramie, Gillette, and Rock Springs all observe Mountain Time. This makes scheduling across Wyoming straightforward, as there's no time difference within the state.
Wyoming's Mountain Time position places it between the coasts. When it's 9 AM in Cheyenne, it's 11 AM in New York and 8 AM in Los Angeles. Wyoming's energy sector coordinates operations with markets across multiple US time zones.