America/Denver time zone

America/Denver is an IANA time zone used in United States. It is on standard time now, UTC−7 (MST), until Sunday, March 14, 2027.

America/Denver at a glance

UTC offset now	UTC−7
Standard time	UTC−7 (MST)
Daylight saving time	UTC−6 (MDT)
Abbreviations	MST, MDT
Used in	United States
Next clock change	Sunday, March 14, 2027

How America/Denver keeps time

Standard time in America/Denver is UTC−7 (MST). During daylight saving time the zone moves 1 hour to UTC−6 (MDT). The table lists the recent and upcoming changes as recorded in tz database version 2026e.

Recent and upcoming changes in America/Denver

Date	Change	New offset
Sunday, March 9, 2025	Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM	UTC−6
Sunday, November 2, 2025	Clocks go back 1 hour: 2:00 AM becomes 1:00 AM	UTC−7
Sunday, March 8, 2026	Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM	UTC−6
Sunday, November 1, 2026	Clocks go back 1 hour: 2:00 AM becomes 1:00 AM	UTC−7
Sunday, March 14, 2027	Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM	UTC−6
Sunday, November 7, 2027	Clocks go back 1 hour: 2:00 AM becomes 1:00 AM	UTC−7
Sunday, March 12, 2028	Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM	UTC−6
Sunday, November 5, 2028	Clocks go back 1 hour: 2:00 AM becomes 1:00 AM	UTC−7

Countries and cities on America/Denver

America/Denver is used in United States. These are the largest cities in our list that follow it.

America/Denver compared with other time zones

Differences change during the year when one side moves to or from daylight saving time, so the table shows January and July separately.

City	Time now	Difference now	In January	In July
New York (United States)	--:--	2 h ahead	2 h ahead	2 h ahead
Los Angeles (United States)	--:--	1 h behind	1 h behind	1 h behind
London (United Kingdom)	--:--	7 h ahead	7 h ahead	7 h ahead
Paris (France)	--:--	8 h ahead	8 h ahead	8 h ahead
Dubai (United Arab Emirates)	--:--	11 h ahead	11 h ahead	10 h ahead
Mumbai (India)	--:--	12 h 30 min ahead	12 h 30 min ahead	11 h 30 min ahead
Singapore	--:--	15 h ahead	15 h ahead	14 h ahead
Tokyo (Japan)	--:--	16 h ahead	16 h ahead	15 h ahead
Sydney (Australia)	--:--	18 h ahead	18 h ahead	16 h ahead
UTC	--:--	7 h ahead	7 h ahead	6 h ahead

Other zones on UTC−7 right now

These IANA zones show the same time as America/Denver today. Their clock-change rules may differ.

Using America/Denver in software

Store and send the zone as its IANA name, America/Denver, not as a fixed offset. A fixed offset such as UTC−7 gives the wrong result after the next clock change.

Show the current time in America/Denver:

// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'America/Denver', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('America/Denver'))
// PHP
(new DateTime('now', new DateTimeZone('America/Denver')))->format('c');
# Shell
TZ=America/Denver date

Tools for time in America/Denver

Convert a time to or from America/Denver: pick a date and time and see it in every city on your list.
Add Denver to your world clock to keep it next to your own time.
Find a meeting time that falls inside office hours in America/Denver and the other cities you work with.
Open a full-screen clock for your own time zone.

Frequently asked questions

What is the UTC offset of America/Denver?

UTC−7 in standard time and UTC−6 during daylight saving time. Right now it is UTC−7.

When does America/Denver change clocks next?

The next change is on Sunday, March 14, 2027 at 2:00 AM local time. The change after that is on Sunday, November 7, 2027.

What abbreviation does America/Denver use?

MST in standard time and MDT during daylight saving time. Abbreviations are not unique, so use the zone name America/Denver in software.

Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.