Current Time in Boulder, Colorado, USA
12:32:03 PM
12:32:03
MDT (Mountain Daylight Time) · UTC−06:00
America/Denver
Time zone details
Boulder is observing daylight saving time in 2026
Daylight in Boulder
Location facts
Place
- Country
- USA
- State
- Colorado
- County
- Boulder County
- Place type
- City or town
- Country currency
- US Dollar (USD)
Practical
- Languages
- English, Spanish, Hawaiian, French
- Dialing code
- +1
- Population
- 106,803
- Elevation
- 1,624 m
Geography
- Geographic coordinates
- 40° 00' N / 105° 16' W
Convert Boulder time
Compare Boulder with another city or time zone
Popular conversions (current offsets)
All times shown relative to Boulder local time
Clock changes in Boulder
2:00 AM MDT1:00 AM MST
Clocks move back 1 hour
2026
past
Daylight saving time starts
2:00 AM MST3:00 AM MDT
Clocks move forward 1 hour
upcoming
Daylight saving time ends
2:00 AM MDT1:00 AM MST
Clocks move back 1 hour
Future clock changes, 2027–2030
Sun & Moon details
Sun
- Sunrise
- Solar noon
- Sunset
- Daylight duration
- 12 hr 37 min2 min 35 sec shorter than the previous day
Twilight
- Civil twilight
- –
- Nautical twilight
- –
- Astronomical twilight
- –
View full Sun & Moon detailsHide full Sun & Moon details
Friday, September 11, 2026
View Boulder on SavvyTime's time-zone map
Sun
- Sunrise
- Sunset
- Day length
- 12 hr 37 min2 min 35 sec shorter than the previous day
- Solar noon
- (54.3° altitude)
Civil twilight
- Dawn to dusk
- –
Additional twilight
- Nautical dawn to dusk
- –
- Astronomical dawn to dusk
- –
Moon
- Phase
- New Moon (0% illuminated)
- Moonrise
- Moonset
- Previous principal phase
- New Moon — Thursday, September 10, 2026 at
- Next principal phase
- First Quarter — Friday, September 18, 2026 at
Seven-day daylight outlook
| Local date | Sunrise | Sunset | Day length | Daily change |
|---|---|---|---|---|
| 12 hr 37 min | 2 min 35 sec shorter than the previous day | |||
| 12 hr 34 min | 2 min 35 sec shorter than the previous day | |||
| 12 hr 32 min | 2 min 36 sec shorter than the previous day | |||
| 12 hr 29 min | 2 min 35 sec shorter than the previous day | |||
| 12 hr 26 min | 2 min 36 sec shorter than the previous day | |||
| 12 hr 24 min | 2 min 36 sec shorter than the previous day | |||
| 12 hr 21 min | 2 min 36 sec shorter than the previous day |
Weather forecast for Boulder
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Plan around Boulder
Time context
Boulder follows the same clock and daylight-saving rules as Denver
Current time offsetUTC−06:00 (MDT)
View time differencesUpcoming public holidays in Colorado
- Frances Xavier Cabrini Day
- Veterans Day
- Thanksgiving Day
Nearby scheduled airports for Boulder, Colorado, USA
Rocky Mountain Metropolitan AirportBJCMedium airport · Serves Denver17.6 km southeast
Source: OurAirports record · BJC / KBJC
About 17.6 km (10.9 mi) southeast of Boulder
Scheduled airline service in source data
Denver International AirportDENLarge airport · Serves Denver53.7 km east-southeast
Source: OurAirports record · DEN / KDEN
About 53.7 km (33.4 mi) east-southeast of Boulder
Scheduled airline service in source data
Cheyenne Regional Jerry Olson FieldCYSMedium airport · Serves Cheyenne133 km north-northeast
Source: OurAirports record · CYS / KCYS
About 133 km (82.4 mi) north-northeast of Boulder
Scheduled airline service in source data
Nearby places
Frequently asked questions
- What time zone is Boulder in?
- Boulder currently uses Mountain Daylight Time (MDT). Its IANA time zone is America/Denver.
- When is the next clock change in Boulder?
- Clocks in Boulder move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from MDT (UTC−06:00) to MST (UTC−07:00)
- Is Boulder currently on daylight saving time?
- Boulder is observing daylight saving time in 2026
- What is the UTC offset in Boulder right now?
- Boulder is currently UTC−06:00