What is Mountain Daylight Time?
You need to keep in mind that this time zone is an identifier for a time offset that is 6 hours behind the UTC time zone
This time pattern is maintained using highly accurate atomic clocks matched to the Earth's rotation.
In this section, you will learn key facts about this time zone and stay well informed.
The IANA time zone identifier used is Etc/GMT+6.
Please be aware that this time zone is observed during Daylight Saving Time
(DST) in the spring, summer, and autumn months.
During the winter months, clocks went back one hour to the UTC-7
offset and Mountain Standard Time
About This Time Pattern
Abbreviation: MDT Time
Time Offset: UTC-6, UTC-06:00
DST Began: 2nd Sunday in March (clocks go forward one hour).
DST Ends: 1st Sunday in November (clocks went back one hour).
MDT Time Time Map
This time zone is a time offset that subtracts 6 hours from Coordinated Universal Time
In the map above we highlight the entire region covered by this time zone.
Its main cities and territories are:
In the map above we highlight the entire region covered by the time zone.
This time offset is also observed during standard time and daylight saving time for various geographic regions.
You need to be very careful finding these time zones that may have different names and abbreviations, but have the same UTC offset:
Central Standard Time (CST)
Central Time (CT)
Easter Island Standard Time (EAST)
Galápagos Time (GALT)
Sierra Time Zone (S)
This time zone is used in the following countries:
In Canada, this time zone is present in the provinces and territories of Alberta, British Columbia
(northeastern and southeastern regions), Northwest Territories (Tungsten), Nunavut
(Kitikmeot Region) and Saskatchewan (Lloydminster).
In the Mexico, this time zone is present in the states of Baja California Sur, Chihuahua, Nayarit (except for the Bahía de Banderas municipality) and Sinaloa.
In the USA, this time offset is present in the states of Colorado
, New Mexico
The MDT time zone is the least populated time zone in the United States, the exact specification for the location of time zones and the dividing lines between zones is set out in the Code of Federal Regulations at 49 CFR 71.