Current Time in Boulder, United States of America

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Check the current local time in Boulder, United States of America, including timezone, daylight saving time information and time difference details.

Boulder, United States of America Administrative region

Online clock — Boulder

Online clock — Boulder

America/Denver

Online clock — Boulder

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Business hours and time difference: Boulder

Use the time converter to plan calls, meetings, and working hours between your location and Boulder, United States of America. Time calculations use the America/Denver time zone and automatically adjust for daylight saving time when applicable.

Sunrise and sunset in Boulder

Sunrise / Sunset

Day length: 10 h 18 m 40 s

Sunrise
Sunset
Solar noon
Civil twilight
Nautical twilight
Day length change
−134 s
Longest day
June 21, 2026 — 15 h 1 m 35 s
Shortest day
December 21, 2026 — 9 h 19 m 4 s
Sun azimuth
↑ 110° ESE ↓ 250° WSW
Golden hour
06:35 AM–07:14 AM / 04:15 PM–04:54 PM
Blue hour
06:07 AM–06:17 AM / 05:11 PM–05:22 PM
Zodiac sign
Scorpio

Moon

Phase: Waning crescent

Moonrise
Moonset
Moon azimuth
↑ 92° E ↓ 264° W
Illumination
12%
Constellation
Libra
Age
26.2 d
Distance
386,329 km
Next new
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Next first quarter
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Daylight Saving Time in Boulder

Daylight Saving Time

Daylight Saving Time in Boulder

Inactive — MST

DST starts

Summer time starts



02:00 03:00 (+1 hour forward)

DST ends

Standard time starts



02:00 01:00 (−1 hour back)

About Boulder

40.0925, -105.3577

Map

Boulder is a region of United States of America, located in North America. The population of Boulder is 330,758 people.

Continent North America
Country United States of America
Region Boulder
Largest city Boulder
ISO US / USA
Population 330,758
TLD .us
Currency USD — Dollar
Coordinates 40.0925, -105.3577

Current time in popular cities of Boulder

20 / 20
City ▲Time
Allenspark America/Denver (—)—
Altona America/Denver (—)—
Boulder America/Denver (—)—
Coal Creek America/Denver (—)—
Eldorado Springs America/Denver (—)—
Erie America/Denver (—)—
Gunbarrel America/Denver (—)—
Jamestown America/Denver (—)—
Lafayette America/Denver (—)—
Lazy Acres America/Denver (—)—
Longmont America/Denver (—)—
Louisville America/Denver (—)—
Lyons America/Denver (—)—
Mountain Meadows America/Denver (—)—
Nederland America/Denver (—)—
Niwot America/Denver (—)—
Paragon Estates America/Denver (—)—
Pine Brook Hill America/Denver (—)—
Saint Anton Highlands America/Denver (—)—
Superior America/Denver (—)—

Current time in other cities of Boulder

15 / 15
City ▲Time
Bark Ranch America/Denver (—)—
Bonanza Mountain Estates America/Denver (—)—
Crisman America/Denver (—)—
Eldora America/Denver (—)—
Glendale America/Denver (—)—
Gold Hill America/Denver (—)—
Hidden Lake America/Denver (—)—
Leyner America/Denver (—)—
Seven Hills America/Denver (—)—
Seven Hills America/Denver (—)—
Sugarloaf America/Denver (—)—
Sunshine America/Denver (—)—
Tall Timber America/Denver (—)—
Valmont America/Denver (—)—
Ward America/Denver (—)—

Current time in other cities of United States of America

20 / 20
City ▲Time
Baltimore America/New_York (—)—
Boston America/New_York (—)—
Brooklyn America/New_York (—)—
Charlotte America/New_York (—)—
Columbus America/New_York (—)—
Denver America/Denver (—)—
Fort Worth America/Chicago (—)—
Fresno America/Los_Angeles (—)—
Houston America/Chicago (—)—
Indianapolis America/Indiana/Indianapolis (—)—
Miami America/New_York (—)—
Milwaukee America/Chicago (—)—
Nashville America/Chicago (—)—
Omaha America/Chicago (—)—
Philadelphia America/New_York (—)—
Portland America/Los_Angeles (—)—
Raleigh America/New_York (—)—
The Bronx America/New_York (—)—
Tucson America/Phoenix (—)—
Washington D.C. America/New_York (—)—

Districts and counties of Colorado

FAQ

What time is it in Boulder now?

The current local time in Boulder is —.

What timezone is Boulder in?

Boulder uses the timezone America/Denver.

When does DST start in Boulder?

Daylight saving time in Boulder starts on March 8, 2026.

When does DST end in Boulder?

Daylight saving time in Boulder ends on November 1, 2026.

What country does Boulder belong to?

Boulder is a region of United States of America.

What is the population of Boulder?

The population of Boulder is 330,758 people.

What are the alternative names for Boulder?

Boulder is also known as: Boulder, Boulderi maakond, Boulder konderria, Boulder Kūn, Boulder megye, Comitatul Boulder, Comté de Boulder, Condado de Boulder, Condado han Boulder, Contea di Boulder.

Current Time in Boulder, United States of America