When Do the Clocks Change in Colorado?

Time Zones in Colorado

Colorado keeps one clock statewide, covering the whole state. It is 10:24 AM there right now.

What Actually Changes: Sunrise and Sunset

The hour on the clock is not the part anyone notices. This is what the change does to daylight in Denver, comparing the day before with the day after.

The amount of daylight barely moves across those two days — roughly the same number of hours either side. What moves is where those hours sit: the clock change shifts them from the evening to the morning, or back again. Full sunrise and sunset detail for Denver.

What Stands Out About Colorado

Solar noon is at 12:46 PM, not noon

The sun reaches its highest point over Denver at 12:46 PM, so the clock runs 47 minutes ahead of the sun. That gap has nothing to do with Daylight Saving Time and never changes: it is simply where Colorado sits inside an hour-wide time zone.

A northern state feels the change hardest

Daylight in Denver swings by 5h 38m across the year, from 14h 59m at midsummer down to 9h 21m in December. Losing an hour of evening on top of that is why the November change lands so much harder in Colorado than it does in the south.

Dark before the working day ends

After the change the sun sets in Denver at 4:56 PM. For most of the winter that means leaving work in the dark, which is the single most common complaint about the November change and the reason states keep voting for permanent Daylight Saving Time they are not allowed to adopt.

The clock changes at the state line

Colorado borders 3 states on a different clock right now: Nebraska, Kansas, Oklahoma. Crossing any of those borders moves the time, which matters for anyone commuting, delivering or scheduling across the line — and for phones, which switch silently and without asking.

The Next Clock Changes in Colorado

The next move is backwards, which is the one people notice: an hour more sleep, and sunset arriving before most of the working day is over. US clocks change on the second Sunday in March and the first Sunday in November. These are the next dates that rule produces for Colorado, computed from the current time zone rules rather than a fixed list — if the rules change, these dates change with them.

Why Colorado Keeps the Clock It Does

Denver gives Mountain Time its reference point — the IANA zone for the whole band is named America/Denver. Colorado borders Arizona at the Four Corners, which is the one place in the country where a state that observes Daylight Saving Time meets one that does not, at a single point.

The practical consequence is that every time difference involving Colorado shifts by an hour on Sunday, November 1, 2026 — and with 3 neighbouring states already on a different clock, this is a state where knowing the date matters at the border as much as it does across the country.

To check an exact gap on an exact date, use the time zone converter, or the meeting planner for a whole group at once.

Crossing the State Line

These neighbouring states are on a different clock from Colorado today. A state border is the most common place to lose or gain an hour without expecting to.

Current Time in Colorado Cities