Colorado Time Zone Map
Mountain Time, statewide.
Time zones in Colorado
| Zone | IANA | Standard | Daylight | Abbr |
|---|---|---|---|---|
| Mountain Time | America/Denver | UTC−7 | UTC−6 | MST / MDT |
Colorado is Mountain Time statewide (MST/MDT, UTC−7 in winter, UTC−6 in summer), with no Central areas; its city Denver follows the same clock.
Crossing the state line
Most of Colorado’s eastern border is a time-zone line: Kansas is on Central Time except the four western counties that match Colorado, and the Oklahoma Panhandle is Central. To the southwest, most of Arizona skips daylight saving, so in summer it runs an hour behind Denver.
Frequently asked questions
Which zone does Colorado follow?
Colorado is Mountain Time, statewide.
Is Colorado in a single time zone?
Yes — Colorado is wholly inside Mountain Time.
What time zone is Denver in?
Denver is on Mountain Time (MST / MDT — UTC−7 in winter, UTC−6 in summer, IANA zone America/Denver).
Sources: zone boundaries from the U.S. Department of Transportation’s time zone regulations (49 CFR Part 71); offsets and daylight saving rules from the IANA time zone database. See Data Sources for how this site uses them.