Time in Boulder, United States of America | Boulder Now
Thursday, 22 October 2026
Time zone information for Boulder
UTC -6
Mountain Time (MT) , currently 13 hours behind Thành phố Hồ Chí Minh
▪Part of the year: UTC -7 / Mountain Standard Time (MST)
▪Time in Boulder is 14 hours behind Thành phố Hồ Chí Minh when on standard time, and 13 hours behind Thành phố Hồ Chí Minh when on daylight saving time.
▪The IANA time zone identifier for Boulder is
America/Denver.March8Sunday2026
Latest change: Daylight saving time started
- ▪Switched to UTC -6 / Mountain Daylight Time (MDT).
- ▪The time was set forward one hour from 02:00 to 03:00 local time.
November1Sunday2026
Next change: Standard time begins
- ▪Switch to UTC -7 / Mountain Standard Time (MST).
- ▪The time will be set backward one hour from 02:00 to 01:00 local time.
Sunrise, sunset, day length and solar time for Boulder
- ▪Sunrise: 07:19
- ▪Sunset: 18:11
- ▪Day length: 10h 52m
- ▪Solar noon: 12:45
- ▪Current time in Boulder is currently 45 minutes ahead of solar time.
Boulder on map
- ▪Location: Colorado, United States of America
- ▪Latitude: 40,01. Longitude: -105,27
- ▪Population: 106,803
- ▪Elevation: 1624 m
Time difference
from Boulder
Sun cycle
Sunrise 07:19
Solar noon 12:45Sunset 18:11
Time zone & DST
- IANA identifier
America/Denver- Abbreviation
- MDT
- UTC offset
- UTC-06:00
- Daylight saving
- In effect
- DST Ends
- 1 Nov 2026in 9 days, 18 hours
- Current Unix epoch
- 1792674371
Sun & astronomy
- Sunrise
- 07:19
- Sunset
- 18:11
- Solar noon
- 12:45
- Day length
- 10h 52m
- Night length
- 13h 07m
- Civil twilight
- 06:51 – 18:38
Geography & country
- Country
- United States of America
- Region / State
- Colorado
- Coordinates
- 40.015°, -105.271°
- Elevation
- 1624 m
- Population
- 106,803
Nearby places
Compare Boulder with other time zones
Find the perfect meeting time or see what time it is across world capitals.