Mountain Daylight Time

English

Time zone map of the United States, with regions observing Mountain Daylight Time in pink

Time zone map of Canada, with regions observing Mountain Daylight Time in light red

Proper noun

Mountain Daylight Time

1. The time zone that encompasses the states around the Rocky Mountains in the United States, and in Alberta, the cross-border city of Lloydminster and its surrounding rural municipalities in Saskatchewan, the Northwest Territories, southeastern British Columbia and the western third of Nunavut in Canada from the second Sunday of March to the first Sunday of November; it is six hours behind Coordinated Universal Time (UTC-6), and one hour ahead of Mountain Standard Time.

   Synonym: MDT (initialism)

Translations

time zone

• French: heure avancée des Rocheuses (fr) f

See also

• Atlantic Daylight Time
• Central Daylight Time
• Eastern Daylight Time
• Pacific Daylight Time