Current time in Casper, WY
Mountain Time UTC−7 · IANA zone America/Denver
Time zone details
| Time zone | Mountain Time (MT) |
|---|---|
| Standard time | MST, UTC−7 (early Nov – mid Mar) |
| Daylight time | MDT, UTC−6 (mid Mar – early Nov) |
| DST clock change | Forward 1 h, 2nd Sunday of March · Back 1 h, 1st Sunday of November |
| Sunrise today | — |
| Sunset today | — |
| Day length | — |
| Coordinates | 42.85° N, 106.33° W |
Time difference from Casper
| City | Local time now |
|---|---|
| New York | +2 h |
| Chicago | +1 h |
| Phoenix | 0 / −1 h |
| Los Angeles | −1 h |
| Anchorage | −2 h |
| Honolulu | −3 / −4 h |
Casper's clock lines up with the entire Mountain Time Zone — Cheyenne, Denver, and Billings all agree.
About time in Casper
Casper, seat of Natrona County on the North Platte River, is Wyoming's second-largest city and sits near the geographic center of a state with no internal time boundaries.
Oil built the modern town: the Salt Creek field to the north turned Casper into a refining hub in the 1910s and 1920s. Every state that borders Wyoming keeps Mountain Time on its Wyoming-facing side, so no drive out of Casper changes the clock until deep into Nebraska or South Dakota.
At 42.9° N the June solstice brings about 15 hours 15 minutes of daylight; late December sees close to 9 hours, with sunset around 4:30 PM MST.
Time in cities near Casper
| City | Distance | Local time now |
|---|---|---|
| Cheyenne, WY | 141 mi | Mountain Time |
| Denver, CO | 226 mi | Mountain Time |
| Aurora, CO | 229 mi | Mountain Time |
| Billings, MT | 229 mi | Mountain Time |
| Colorado Springs, CO | 288 mi | Mountain Time |
| Salt Lake City, UT | 321 mi | Mountain Time |
| Provo, UT | 330 mi | Mountain Time |
| Missoula, MT | 467 mi | Mountain Time |
More places: all Wyoming cities · Mountain Time Zone · every US city
Frequently asked questions
What time zone is Casper in?
Casper is in the Mountain Time Zone (MT). Wyoming observes MST (UTC−7) from early November to mid March and MDT (UTC−6) for the remainder of the year.
How far behind New York is Casper?
Casper is 2 hours behind New York in every season, as Wyoming follows the same daylight saving dates. 4:00 PM in New York is 2:00 PM in Casper.
Does Casper change clocks for daylight saving time?
Yes. Casper moves clocks forward one hour at 2:00 AM on the second Sunday of March and back one hour at 2:00 AM on the first Sunday of November (March 8 and November 1 in 2026).