Skip to content
Global ClockTime zone converter & meeting planner
PAGES
SETTINGS
Clock
Working hours
Start
09
End
18
Theme

AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

CURRENT LOCAL TIME

Time in Boulder, United States

· Mountain Daylight Time

MDT · UTC−6—— H FROM YOUAMERICA/DENVER

Do more with Boulder

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Boulder and other cities on screen as live clocks, under an animated sky and sun.

Boulder against your time zone

Reading your time zone to compare it with Boulder…

Boulder compared with your time zone, hour by hour, with the working-hour overlap shaded
Zone00:00 your time01:00 your time02:00 your time03:00 your time04:00 your time05:00 your time06:00 your time07:00 your time08:00 your time09:00 your time10:00 your time11:00 your time12:00 your time13:00 your time14:00 your time15:00 your time16:00 your time17:00 your time18:00 your time19:00 your time20:00 your time21:00 your time22:00 your time23:00 your time
Boulder——000102030405060708091011121314151617181920212223
Your time——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Boulder time zone facts

IANA time zoneAmerica/Denver
Offset nowUTC−6 (MDT)
Standard offsetUTC−7 (MST)
Next clock change1 Nov 2026, 02:00 → 01:00
CountryUnited States (US)
Population107,349
Coordinates40.02, -105.27
Places in this zone21

Next clock change: Sunday 1 November 2026, when Boulder moves to UTC−7. Regions change on their own schedules, so the gap between Boulder and cities elsewhere is not fixed — daylight saving explained covers the weeks it goes strange.

Best hours to reach Boulder

From New York
2 hours ahead of Boulder · their morning
09:00–16:00
11:00–18:00 EDT
From San Francisco
1 hour behind Boulder · their morning
10:00–18:00
09:00–17:00 PDT
From Bengaluru
11½ hours ahead of Boulder · their morning
22:00–00:00
09:00–11:00 IST

Local times in Boulder on the left, the caller’s own clock on the right. Computed from the working-hour overlap for today’s offsets.

About time in Boulder

Boulder keeps Mountain Daylight Time, UTC−6 from UTC at the moment. Clocks move twice a year, so the same wall-clock time is a different instant in summer and winter — this page reads the offset in force today rather than an average.

Boulder shares the zone America/Denver with Denver, El Paso, Albuquerque, Colorado Springs, so a time here is also the time there. One canonical page per zone keeps the difference honest: the settlement name changes, the clock does not.

Offsets and daylight saving rules come from the IANA time zone database — see IANA time zone notes for what that data does and does not promise about future dates.

Boulder converted to other zones

Each opens a comparison page with both cities on one timeline.

Cities on the same offset today

Also covered by this page

COMMON QUESTIONS

What time is it in Boulder right now?

The clock at the top of this page reads the current time in Boulder to the second. Boulder is on Mountain Daylight Time, UTC−6 — the same clock as every other place in the zone America/Denver.

Does Boulder observe daylight saving time?

Yes. Boulder is on UTC−6 now and UTC−7 outside daylight saving. The next change is Sunday 1 November 2026, when clocks go back.

What time zone is Boulder in?

Boulder uses the IANA zone America/Denver, currently MDT (UTC−6). Abbreviations are for reading — the zone identifier is the unambiguous name, and it is what you should store in your own systems.

Which other places read the same time as Boulder?

Denver, El Paso, Albuquerque, Colorado Springs, Aurora all sit in America/Denver, so they read exactly the same clock, daylight saving changes included.