Time in Thornton, Colorado right now
Thornton, Colorado runs on Mountain Time, UTC-7 in winter and UTC-6 during daylight saving. The live clock above updates every minute for the exact 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 times in Thornton today.
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
Time difference between Thornton and other cities.
Thornton is 2 hours behind New York all year, so plan calls to the East Coast with that gap in mind.
| 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 | --:-- |
Thornton time zone and daylight saving time.
Thornton changes clocks on Sunday, 8 March 2026 and Sunday, 1 November 2026, both at 2:00 local time, moving from UTC-7 to UTC-6 and back. Clock change dates come from the IANA time zone database.
- 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.
Direct answers on Thornton time, the Mountain Time zone, UTC offsets, the 2026 clock change dates and the closest towns.
01
What time is it in Thornton right now?
Thornton is on Mountain Time, UTC-7 in winter and UTC-6 during daylight saving time. The live clock at the top of this page updates every minute.
02
What time zone is Thornton in?
Thornton uses Mountain Time (MT), at UTC-7 in winter and UTC-6 in daylight saving time.
03
Does Thornton observe daylight saving time?
Yes. Clocks in Thornton go forward on Sunday, 8 March 2026 and back on Sunday, 1 November 2026, both at 2:00 local time.
04
What time does the sun rise in Thornton?
On the longest day of 2026 the sun rises at 05:31 and sets at 20:31 in Thornton. 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.
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, based on the 2026 GeoNames population update.
09
Where is Thornton, Colorado?
Thornton sits at 39.8680° N, 104.9719° W in Colorado, about 9 miles from Denver, in the UTC-7 zone.
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, all in the UTC-7 zone as Thornton.