Primary city
Denver
US time zone
Mountain Time
Rocky Mountain states that observe daylight saving — Denver, Salt Lake City, Albuquerque. Arizona is listed separately.
MST / MDT UTC−7 → UTC−6 DST Observes daylight saving America/Denver
Standard offset
UTC−7
Daylight saving
Yes
IANA id
America/Denver
Major cities
- Denver , CO
- Salt Lake City , UT
- Albuquerque , NM
- Boise , ID
Related states & territories
Some states span multiple zones — these links cover places commonly associated with Mountain Time.
Convert into Mountain Time
Pick any city and local time — results highlight every U.S. zone, with Mountain Time called out.
Converting 12:00 in Tokyo, JP. Times use official IANA zones (DST applied automatically).
| U.S. zone | Local time | Date | Note |
|---|---|---|---|
| Eastern Time EST | — | — | — |
| Central Time CST | — | — | — |
| Mountain Time MST | — | — | — |
| Pacific Time PST | — | — | — |
| Alaska Time AKST | — | — | — |
| Hawaii–Aleutian Time HST · no DST | — | — | — |
| Arizona (Mountain Standard) MST · no DST | — | — | — |
| Atlantic Time (Puerto Rico) AST · no DST | — | — | — |
| Chamorro Time ChST · no DST | — | — | — |
| Samoa Standard Time SST · no DST | — | — | — |
Live clocks refresh about every 30s. Prefer a city page? Browse the U.S. time zones list.