Where the America/Denver time zone is used
Countries: 🇺🇸 United States.
Area covered: Mountain (most areas).
Also known in software as: America/Shiprock, Navajo, US/Mountain.
Largest cities on America/Denver
DenverColorado
El PasoTexas
AlbuquerqueNew Mexico
Colorado SpringsColorado
AuroraColorado
Salt Lake CityUtah
Fort CollinsColorado
LakewoodColorado
West Valley CityUtah
ThorntonColorado
BillingsMontana
WestminsterColorado
America/Denver time zone
Mountain Time
Mountain Daylight Time (MDT)
IANA: America/Denver · UTC−6
Daylight saving time in America/Denver
In effect now
Next change: Sun 1 Nov, clocks go back 1 hour (02:00 → 01:00)
Sunrise and sunset in America/Denver today
Sunrise 06:54 · Sunset 18:44
Daylight 11h 50m · Solar noon 12:49
Time in America/Denver vs major world cities
| City | Local time | Difference from America/Denver |
|---|
| New York | Thu | 2 hours ahead |
| Los Angeles | Thu | 1 hour behind |
| London | Thu | 7 hours ahead |
| Paris | Thu | 8 hours ahead |
| Dubai | Thu | 10 hours ahead |
| Mumbai | Thu | 11.5 hours ahead |
| Singapore | Fri | 14 hours ahead |
| Tokyo | Fri | 15 hours ahead |
| Sydney | Fri | 16 hours ahead |
| Johannesburg | Thu | 8 hours ahead |
| São Paulo | Thu | 3 hours ahead |
| Chicago | Thu | 1 hour ahead |
What time zone is America/Denver in?
America/Denver is on Mountain Time (MDT, UTC−6). The IANA identifier is America/Denver.
Does America/Denver observe daylight saving time?
Yes. America/Denver is on daylight saving time now. The next changes:
- Sunday 1 November 2026: clocks go back at 02:00 to 01:00 (MDT → MST)
- Sunday 14 March 2027: clocks go forward at 02:00 to 03:00 (MST → MDT)
- Sunday 7 November 2027: clocks go back at 02:00 to 01:00 (MDT → MST)
America/Denver in software and databases
Older software may still use America/Shiprock, Navajo, US/Mountain; these are aliases of America/Denver and give identical times.
Standard offset UTC−7, daylight saving offset UTC−6 (as of 2026).
October 2026 calendar for America/Denver
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| | | 1 | 2 | 3 | 4 |
| 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 29 | 30 | 31 | |
Frequently asked questions about America/Denver
What time zone is America/Denver in?
Mountain Time (MDT), UTC−6; IANA zone America/Denver.
When do the clocks change in America/Denver?
Next on Sunday 1 November 2026, when clocks go back from 02:00 to 01:00.