MDT – Mountain Daylight Time
Time zone offset: UTC - 6 hours
MDT is 6 hours behind of Coordinated Universal Time (UTC)
Note that MDT is a daylight saving time/summer time zone. It is generally only used during the summer in the places listed below, during the winter MST is used instead
Time zone abbreviations: MDT, HAR
Full name is Mountain Daylight Time
HAR – Heure Avancée des Rocheuses (French)
Email time zone indicator: -0600
An email sent from someone in the MDT time zone will have the time zone listed as "-0600" in the headers of the email. (However, "-0600" does not have to be in MDT, as other time zones could have the same UTC offset).
MDT is used in the summer in these US states (MST during winter)
* Arizona - Navajo Nation only
* Colorado
* Idaho
* Kansas
* Montana
* Nebraska
* New Mexico
* North Dakota
* Oregon
* South Dakota
* Texas
* Utah
* Wyoming
MDT is used during summer in these Canadian provinces (MST during winter)
* Alberta
* British Columbia
* Northwest Territories
* Saskatchewan - only Lloydminster
MDT is used during summer in these Mexican states (MST during winter)
* Baja California Sur
* Chihuahua
* Nayarit
* Sinaloa
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