Also known as: Mountain Standard Time (MST) and Mountain Daylight Time (MDT)
Areas with same time currently (UTC -6).
Currently has same time zone offset as MDT (UTC -6) but different time zone name.
The term Mountain Time (MT) is often used to denote the local time in areas observing either Mountain Daylight Time (MDT) or Mountain Standard Time (MST).
In other words, in locations observing Daylight Saving Time (DST) during part of the year, Mountain Time is not static but switches between MDT and MST.
Mountain Time UTC Offset
Mountain Standard Time is 7 hours behind Coordinated Universal Time (UTC).
Mountain Daylight Time is 6 hours behind UTC.
What Is Mountain Time?
Mountain Time (MT) is the second westernmost time zone in the United States and Canada. It is also used in Mexico.
The MT time zone is the least populated time zone in the US. It spans from northern Canada to Mexico near the equator.
In North America, Mountain Time shares a border with Central Time (CT) in the east and with Pacific Time (PT) in the west.
What Does MT Time Zone Mean?
Unlike other time zone denominations, which have a fixed time, Mountain Time refers to a geographical area where the time changes twice yearly as Daylight Saving Time (DST) begins and ends. Mountain Standard Time is UTC-7, while Mountain Daylight Time is UTC-6.
Most North American time zones also have generic terms, including Pacific Time (PT), Central Time (CT), Eastern Time (ET), and Atlantic Time (AT).
Converting Mountain Time to Other US Time Zones
- Mountain Time (MT) is 2 hours behind Eastern Time (ET).
To convert MT to ET, you have to add two hours. - Mountain Time (MT) is 1 hour behind Central Time (CT).
To convert MT to CT, you have to add one hour. - Mountain Time (MT) is 1 hour ahead of Pacific Time (PT).
To convert MT to PT, you have to subtract one hour.
Time Zone Converter: UTC to MT
Where and when is Mountain Time observed?
North America
US states using MST in the winter and MDT in the summer
- Arizona - Navajo Nation only
- Colorado
- Idaho - most of the state except western counties
- Kansas - some western counties only
- Montana
- Nebraska - western counties
- New Mexico
- North Dakota - South-Western parts
- Oregon - parts of Malheur county only
- South Dakota - western counties
- Texas - a few counties in west
- Utah
- Wyoming
Canadian provinces/territories using MST in the winter and MDT in the summer
- Alberta
- British Columbia - a few eastern communities
- Northwest Territories
- Nunavut - Kugluktuk, Cambridge Bay only (Other parts use EST/EDT or EST only)
- Saskatchewan - only Lloydminster
Mexican states using MST in the winter and MDT in the summer
- Baja California Sur
- Chihuahua
- Nayarit
- Sinaloa
MST all year round
Some locations, such as the ones below don't switch and are in MST all year long.