Boulder — Local Time

06:58:38
Sunday, July 19, 2026
MDT(Mountain Daylight Time)UTC-6
Sunrise
05:47
Sunset
20:27
Day Length
14h 39m
Solar Noon
13:07
Sun is highest in the sky
Civil Dawn: 05:16 · Civil Dusk: 20:58
05:4720:27
Golden hour · Morning
05:48 – 06:27
Golden hour · Evening
19:47 – 20:26
-1min vs yesterday

Daylight Saving Time

MST → MDTMar 8, 2026Clocks spring forward 1 hour
MDT → MSTNov 1, 2026Clocks fall back 1 hour
Next change: Nov 1, 2026 (in 105d)

🌒Moon Phase

Waxing Crescent
Illumination: 23%
Moonrise: 11:07 · Moonset: 23:31
First Quarter · 3d

Time Difference

New York
08:58+2h
London
13:58+7h
Paris
14:58+8h
Athens
15:58+9h
Moscow
15:58+9h
Dubai
16:58+10h
Mumbai
18:28+11h 30m
Beijing
20:58+14h
Tokyo
21:58+15h
Sydney
22:58+16h

Distance Calculator

Calculate the air distance from Boulder to any city worldwide

Boulder, United States
40° 1' N, 105° 16' W

Upcoming Holidays

Mon, Sep 7Labor Day
50d
Mon, Oct 12Columbus Day
85d
Wed, Nov 11Veterans Day
115d
Thu, Nov 26Thanksgiving Day
130d
Fri, Dec 25Christmas Day
159d
View All Holidays →

Nearby Cities

Gunbarrel8.5 km
MDT
Superior11.1 km
MDT
Niwot13.0 km
MDT
Louisville12.5 km
MDT
Gold Hill13.1 km
MDT
Jamestown15.0 km
MDT
Lafayette15.6 km
MDT
Leyden20.3 km
MDT
Lyons23.3 km
MDT

Frequently Asked Questions

What time is it in Boulder?

The current local time in Boulder, United States is displayed above in real-time. Boulder uses the MDT timezone (UTC-6).

Does Boulder observe daylight saving time?

Yes, Boulder observes daylight saving time. Clocks spring forward in March 2026 and fall back in November 2026.

When does the sun rise and set in Boulder?

Today in Boulder, sunrise is at 05:47 and sunset is at 20:27. The total day length is 14h 39m.

What is the UTC offset for Boulder?

Boulder is in the MDT timezone with a UTC offset of UTC-6. The IANA timezone identifier is America/Denver.