Time in Thornton, Colorado now
Thornton is in Colorado and uses Mountain Time. The clock on this page is live, and the times below are worked out for the coordinates of Thornton.
- State
- Colorado
- Time zone
- Mountain Time
- Offset from UTC now
- Daylight saving time
- Yes, 8 Mar to 1 Nov
- Population
- 133,451
- Coordinates
- 39.8680° N, 104.9719° W
Sunrise and sunset in Thornton.
Worked out for 39.8680° N, 104.9719° W from the position of the sun, and updated every minute. On the longest day of 2026 the sun is up in Thornton for 15h 0m, and on the shortest day for 9h 20m.
- Sunrise
- Sunset
- Day length
- Solar noon
- Moon phase
- Moon lit
Thornton compared with other cities.
How the clock in Thornton lines up with the rest of the United States and a few cities around the world, right now.
| City | Time zone | Local time | From Thornton |
|---|---|---|---|
| New York | Eastern Time | --:-- | |
| Chicago | Central Time | --:-- | |
| Denver | Mountain Time | --:-- | |
| Phoenix | Mountain Time without daylight saving | --:-- | |
| Los Angeles | Pacific Time | --:-- | |
| Honolulu | Hawaii-Aleutian Time | --:-- | |
| London | United Kingdom | --:-- | |
| Dubai | United Arab Emirates | --:-- | |
| Tokyo | Japan | --:-- | |
| Sydney | Australia | --:-- |
Time in places near Thornton.
The closest places listed for Colorado, with the distance from Thornton and their local time. See every place on the Colorado page.
When the clocks change in Thornton.
Thornton follows the national rules: clocks go forward one hour on the second Sunday of March and back one hour on the first Sunday of November, at 2:00 local time.
- 8 March 2026 Clocks go forward 1 hour Daylight saving time starts at 2:00 local time
- 1 November 2026 Clocks go back 1 hour Daylight saving time ends at 2:00 local time
- 14 March 2027 Clocks go forward 1 hour Daylight saving time starts at 2:00 local time
- 7 November 2027 Clocks go back 1 hour Daylight saving time ends at 2:00 local time
Sunrise and sunset above move with the clock change, so evenings are an hour lighter from Sunday, 8 March 2026.
Quick answers about time in Thornton.
Short answers about the time zone, sunrise, clock changes and neighbours of Thornton.
01
What time is it in Thornton right now?
Thornton is on Mountain Time, UTC-7, and UTC-6 during daylight saving time. The clock at the top of this page shows the current local time and updates every minute.
02
What time zone is Thornton in?
Thornton uses Mountain Time, the same zone as the rest of Colorado in most cases. The Colorado page shows every zone used in the state.
03
Does Thornton observe daylight saving time?
Yes. Clocks in Thornton go forward one hour on Sunday, 8 March 2026 and back one hour on Sunday, 1 November 2026, both at 2:00 local time.
04
What time does the sun rise in Thornton?
Today's sunrise and sunset are shown live on this page. On the longest day of 2026 the sun rises at 05:31 and sets at 20:31, and on the shortest day it rises at 07:17 and sets at 16:37.
05
How long is the longest day in Thornton?
The sun is up for 15h 0m on the June solstice and for 9h 20m on the December solstice. Day length changes fastest around the equinoxes in March and September.
06
What is the time difference between Thornton and New York?
Thornton is 2 hours behind New York all year.
07
What is the time difference between Thornton and London?
Thornton is 7 hours behind London for most of the year. The gap changes for a few weeks each spring and autumn, because the United States and the United Kingdom change their clocks on different dates.
08
How many people live in Thornton?
Thornton has about 133,451 people, which makes it one of the places listed for Colorado on Time Dates. Population figures come from GeoNames.
09
Where is Thornton?
Thornton sits at 39.8680° N, 104.9719° W in Colorado, about 9 miles from Denver.
10
Which places are closest to Thornton?
The closest places listed are Northglenn, 1 miles away, Welby, 2 miles away and Sherrelwood, 3 miles away. Each one shows its own local time on this page.