Time » United States » Boulder

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Boulder Time Zone

Abbreviation: MDT - Mountain Daylight Time
UTC Offset: UTC-6
Boulder, Colorado, USA is 6 hours behind UTC.
DST Changes: Daylight Saving Time is currently being observed in Boulder.
Date DST Started: 12 March 2023
Clocks are turned forward 1 hour.
Date DST Ends: 05 November 2023
Clocks are turned backward 1 hour.






Boulder time comparison:
See the time difference between Boulder, Colorado, USA and other cities and time zones


Boulder City Information

Country: USA
State: Colorado
Latitude: 40° 01' North
Longitude: 105° 17' West
Area Code: +1-303 / 720

Convert in Boulder to other cities


Boulder Time Difference



Airports near Boulder, Colorado, USA
  • Boulder Municipal Airport (WBU): about 3 miles northeast of Boulder