Time in Boulder, United States

4:21:04 pm

Saturday, October 31, 2026

2 hours behind New York.

DaylightSunset 6 pm · in 1 h 39 min

Call now?

Fine for a personal call.

Daytime on a Saturday in Boulder: most people are up and about.

Sun today

Sunset 6 pm

Sunrise 7:29 am · 10 h 31 min of daylight

Time zone

MDT · UTC-6

On Sunday, November 1, 2026, Boulder turns its clocks back an hour, to UTC-7.

Your day against Boulder’s

Boulder’s working day, 9 am–6 pm, is 11 am to 8 pm your time.

At 6:21 pm for you it’s 4:21 pm in Boulder.

New York

Boulder

Add Boulder to my board Sunrise and sunset in Boulder See it on the day and night map

Sunrise and sunset

On October 31, sunrise 7:29 am, sunset 6 pm: 10 h 31 min of daylight. Sunrise and sunset in Boulder

Golden hour today

On October 31: 7:12–8:07 am and 5:21–6:17 pm. Golden hour and blue hour in Boulder

Time zone

Mountain Time: MST (UTC-7) in winter, MDT (UTC-6) in summer. America/Denver What MDT means

Next clock change

On Sunday, November 1, 2026, Boulder turns its clocks back an hour, to UTC-7. Clock changes in the US and Canada

Country

Boulder is in the United States, in the Mountain zone: one of 6 time zones there. Time across the United States

Same clock

Denver keeps the same clock as Boulder, all year.

Sunset today nearby

Denver5:59 pm
Aurora5:58 pm
Fort Collins5:58 pm
Greeley5:57 pm
Colorado Springs6 pm
Pueblo6 pm
Provo6:25 pm
Albuquerque6:13 pm

More cities in the United States

Time in other cities

Embed this clock

Boulder’s time, sunrise and sunset, live on your own site. Paste the HTML into any page, or the link into Notion.

HTML

<iframe src="https://meridian-clock.com/embed/time/boulder?size=square&theme=auto" width="300" height="300" style="border:0;border-radius:16px" title="Time in Boulder" loading="lazy" referrerpolicy="strict-origin"></iframe>
<p style="margin:4px 0 0;font-size:12px"><a href="https://meridian-clock.com/time/boulder">World clock by Meridian</a></p>

Link, for Notion’s /embed

Keep the line under the clock: it tells your readers where the time comes from. More about the clock

Questions

Is it day or night in Boulder right now?

Daylight in Boulder. Sunset at 6 pm, in 1 h 39 min. Daytime on a Saturday in Boulder: most people are up and about.

What time zone is Boulder in?

Boulder is on Mountain Time: MST (UTC-7) in winter, MDT (UTC-6) in summer. Its zone in the time zone database is America/Denver.

Does Boulder use daylight saving time?

Yes. Boulder is on UTC-7 in winter and UTC-6 in summer. On Sunday, November 1, 2026, Boulder turns its clocks back an hour, to UTC-7.

When are sunrise and sunset in Boulder today?

On October 31, sunrise 7:29 am, sunset 6 pm: 10 h 31 min of daylight.

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