Current local time in Boulder, United States
The live clock above shows the time in Boulder. Boulder is in the America/Denver time zone, UTC−6 right now (MDT).
| Country | United States |
|---|---|
| Region | Colorado |
| Population | about 107,000 |
| Coordinates | 40.04° N, 105.25° W |
| Time zone | America/Denver |
| Abbreviation | MST / MDT |
| UTC offset | UTC−7 (winter) / UTC−6 (summer) |
| Daylight saving time | Yes |
Daylight saving time
Boulder uses daylight saving time: clocks switch between UTC−7 (MST) and UTC−6 (MDT). The next change is on Sunday, November 1, 2026, when clocks go back one hour.
Sunrise, sunset and daylight
Today: sunrise …, sunset …, .
| 2026 | Sunrise | Sunset | Daylight |
|---|---|---|---|
| March equinox | 7:04 AM | 7:12 PM | 12 h 7 min |
| June solstice | 5:32 AM | 8:33 PM | 15 h 1 min |
| September equinox | 6:48 AM | 6:58 PM | 12 h 10 min |
| December solstice | 7:19 AM | 4:38 PM | 9 h 19 min |
Clock time vs. sun time
The sun is highest over Boulder at about 12:10 PM in mid-January, and about 1:06 PM in mid-July. On standard time, local clocks run about 1 minutes ahead of the sun, because Boulder sits at 105.2° W, while its time zone is centred on 105.0° W.
Boulder time compared with other cities
| City | Time now | Compared with Boulder |
|---|---|---|
| New York | 2 hours ahead | |
| Los Angeles | 1 hour behind | |
| London | 7 hours ahead | |
| Paris | 8 hours ahead | |
| Dubai | 11 hours ahead in Jan, 10 hours ahead in Jul | |
| Mumbai | 12.5 hours ahead in Jan, 11.5 hours ahead in Jul | |
| Shanghai | 15 hours ahead in Jan, 14 hours ahead in Jul | |
| Tokyo | 16 hours ahead in Jan, 15 hours ahead in Jul | |
| Sydney | 18 hours ahead in Jan, 16 hours ahead in Jul |
Nearby cities
| City | Distance | Time now vs Boulder |
|---|---|---|
| Denver | 40 km (25 mi) | same time |
| Aurora | 53 km (33 mi) | same time |
| Fort Collins | 60 km (37 mi) | same time |
| Greeley | 60 km (37 mi) | same time |
| Colorado Springs | 136 km (85 mi) | same time |
| Pueblo | 203 km (126 mi) | same time |
| Provo | 544 km (338 mi) | same time |
| Albuquerque | 562 km (349 mi) | same time |
Other cities in United States
- New York
- Los Angeles
- Chicago
- Houston
- Philadelphia
- Dallas
- Miami
- Boston
- Detroit
- Atlanta
- Washington DC
- Phoenix
- San Francisco
- San Diego
- Denver
- Seattle
- Irvine
- Pittsburgh
Questions people ask
What time zone is Boulder in?
Boulder is in the America/Denver time zone, UTC−7, or UTC−6 during daylight saving time.
Does Boulder have daylight saving time?
Boulder uses daylight saving time: clocks switch between UTC−7 (MST) and UTC−6 (MDT). The next change is on Sunday, November 1, 2026, when clocks go back one hour.
Why isn't noon in Boulder when the sun is highest?
Because time zones are wide. Boulder's clocks follow a zone centred on 105.0° W, so on standard time they run about 1 minutes ahead of the sun. Daylight saving time adds another hour.
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Time zone data: IANA tz database 2026e. Population: Natural Earth (approximate).