What is the time zone of Wyoming?

The state of Wyoming is in the Mountain Time zone. All counties and cities of the state have the same time zone, there are no exceptions. Wyoming is observing daylight savings so there are two different clocks depending on the time of the year.

  • Mountain Standard Time (MST): – 7:00 UTC/GMT (behind)
  • Mountain Daylight Time (MDT): – 6:00 UTC/GMT (behind)
Mountain Time
USA states time zones
us state Wyoming counties time zone map
Wyoming time zone

All neighbouring states have the same time zone. So, the clocks are unchanged regardless if you cross the border with Utah, Colorado, Idaho, Montana, South Dakota or Nebraska.

Daylight savings time (DST)

Wyoming is using daylight savings as also documented in the Uniform Time Act of 1966. During daylight savings the time changes from Mountain Standard time (MST) to Mountain Daylight time (MDT).

It starts on the second Sunday in March and ends on the first Sunday in November. In March the clock is moved forward from 02.00 am to 03.00 am (so you will lose an hour of sleep during the night). While in November it’s reversed as the clock is moved backward from 03.00 am to 02.00 am and you will gain an extra hour of sleep. One way of remembering the movement sequence is that clocks “spring forward and fall back”.

The total period of daylight savings lasts for 34 weeks which is about 65% of the year.

daylight savings mountain time zone

Wyoming time news, bills and legislation

There is a continuous debate about which time should be applied. Several bills have been introduced to legalize daylight saving time as the year-round clock, whereas others try to align the time with bordering counties or states. The table below gives an overview of the latest bills in the state of Wyoming.

Date Bill Status/Action Title/summary
4 Feb 2021 HB0071 Intro, To Joint Transportation, Highways & Military Affairs Committee AN ACT relating to legal time; requiring the state to observe a time zone as specified; establishing a new uniform state time; repealing provisions; and providing for effective dates.

Other US states

You can check out information and maps of other US states by clicking on the below links.