What time is it in Thornton, Colorado?

Thornton is currently on daylight saving time. The next change is Sunday, November 1, 2026, when 2:00 am becomes 1:00 am local time.

Thornton sits at 39.92°N, 104.94°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in Thornton.

The clock says the same thing everywhere in Mountain Daylight Time, but the sun does not. Over Thornton it is highest at 12:51 pm today — 51 minutes after clock noon.

At 104.9°W, Thornton sits well toward the western edge of its zone, which is why the sun stays up later here than the clock suggests. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 1 minute in Thornton, and the day is getting shorter by 3 minutes a day. Across the year it swings 5 hours 40 minutes, from 15 hours at the June solstice down to 9 hours 20 minutes in December.

At 39.9°N that puts Thornton between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.