Mountain Time Zone

Time Zone of a Place
Time zone of

What is the Mountain Time Zone?

Answer

Mountain Time Zone
UTC−7 (MST) and UTC−6 (MDT)

The same offset as a plain number: UTC−7.

Time Zone Facts

Abbreviations
MST / MDT
Standard time
UTC−7
Daylight saving time
UTC−6
Clock changes
daylight time from March 8, 2026 and standard time from November 1, 2026
Daylight saving time in effect now
Yes

Where This Zone Applies

The clocks do not change everywhere in this zone. On standard time all year: Arizona and Mesa, Arizona.
PlaceStandard timeClock changes
Canada — Alberta and the Northwest TerritoriesUTC−7Forward only
Canada — Yukon, which has kept Mountain Standard Time all year round since 2020UTC−7No
United States — Arizona, which keeps Mountain Time all year (except the Navajo Nation)UTC−7No
United States — the Rocky Mountain statesUTC−7Yes
AlbertaUTC−7Forward only
ArizonaUTC−7No
British Columbia — the Peace River area — Dawson Creek, Fort St. John, Fort Nelson — and Creston, all on MST all yearUTC−7No
ColoradoUTC−7Yes
Idaho — the southern two-thirds, including Boise and Idaho FallsUTC−7Yes
MontanaUTC−7Yes
Nebraska — the western panhandle, including Scottsbluff and North PlatteUTC−7Yes
New MexicoUTC−7Yes
Saskatchewan — Lloydminster and the strip along the Alberta border, which keep Alberta’s clockUTC−7Forward only
South Dakota — the west beyond the Missouri River, including Rapid CityUTC−7Yes
Texas — the two far-western counties, El Paso and HudspethUTC−7Yes
UtahUTC−7Yes
WyomingUTC−7Yes
Kansas — four counties in the far west: Greeley, Hamilton, Sherman and WallaceUTC−7Yes
North Dakota — the southwestern corner: Bowman, Slope, Golden Valley and Billings countiesUTC−7Yes
Oregon — most of Malheur County in the southeast, including Ontario and ValeUTC−7Yes
AlbuquerqueUTC−7Yes
CalgaryUTC−7Forward only
DenverUTC−7Yes
EdmontonUTC−7Forward only
Mesa, ArizonaUTC−7No
Santa Fe, New MexicoUTC−7Yes

Time Difference

UTC
6 hours behind
Eastern Time
2 hours behind
Central Time
1 hour behind
Pacific Time
1 hour ahead
Moscow Time
MSK−10 in standard time, MSK−9 in daylight time

Current time in the zone

UTC−6 — subtract 6 hours from UTC

Related Calculations

See Also

Time Zone of a Place

This reference shows what time zone a place is in: the name of the zone and its abbreviations, the UTC offset in standard and daylight time, whether the clocks change there and when, plus the difference from UTC, from the four US zones and from Moscow. For example, it can help you find out what is the Mountain Time Zone? (The answer is: UTC−7 (MST) and UTC−6 (MDT)). Pick a place or a zone (e.g. 'Mountain Time') and hit the 'Find out' button.
Time Zone of a Place
Time zone of

Named Time Zones

Time zoneStandard timeDaylight saving time
Australian Central TimeUTC+9:30UTC+10:30
Australian Eastern TimeUTC+10UTC+11
Australian Western TimeUTC+8not observed
Brasília TimeUTC−3not observed
Central European TimeUTC+1UTC+2
Central TimeUTC−6UTC−5
Chamorro TimeUTC+10not observed
East Africa TimeUTC+3not observed
Eastern European TimeUTC+2UTC+3
Eastern TimeUTC−5UTC−4
Greenwich Mean TimeUTCUTC+1
Hawaii–Aleutian TimeUTC−10not observed
Hong Kong TimeUTC+8not observed
India Standard TimeUTC+5:30not observed
Irish TimeUTCUTC+1
Irkutsk TimeUTC+8not observed
Israel TimeUTC+2UTC+3
Japan Standard TimeUTC+9not observed
Kaliningrad TimeUTC+2not observed
Kamchatka TimeUTC+12not observed
Korea Standard TimeUTC+9not observed
Krasnoyarsk TimeUTC+7not observed
Magadan TimeUTC+11not observed
Mexican Central TimeUTC−6not observed
Mexican Northwest TimeUTC−8UTC−7
Mexican Pacific TimeUTC−7not observed
Mexican Southeast TimeUTC−5not observed
Moscow TimeUTC+3not observed
Mountain TimeUTC−7UTC−6
Newfoundland TimeUTC−3:30UTC−2:30
New Zealand TimeUTC+12UTC+13
Omsk TimeUTC+6not observed
Pacific TimeUTC−8UTC−7
Samara TimeUTC+4not observed
Samoa TimeUTC−11not observed
South Africa Standard TimeUTC+2not observed
Vladivostok TimeUTC+10not observed
Western European TimeUTCUTC+1
Yakutsk TimeUTC+9not observed
Yekaterinburg TimeUTC+5not observed

FAQ

What is the Mountain Time Zone?

Mountain Time Zone UTC−7 (MST) and UTC−6 (MDT)

Where does the Mountain Time Zone apply?

Among the places in this reference: Alberta, Arizona, Colorado, Montana and New Mexico.

Do the clocks change in the Mountain Time Zone?

Yes: UTC−7 in standard time and UTC−6 in daylight time. The clocks do not change everywhere in this zone. On standard time all year: Arizona and Mesa, Arizona.

What does MST stand for?

MST is the standard time of the zone (UTC−7), and MDT its daylight time (UTC−6).

See Also