Abbreviation / Name
MDT - Mountain Daylight Time
MST - Mountain Standard Time
UTC / GMT Offset
-6:00 hours during Mountain Daylight Time, currently in use.
-7:00 hours during Mountain Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
November 1 at 01:00 local time. DST starts annually on the same date and time.. Clocks are turned 1 hour forward. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
March 14 at 01:59 local time. DST ends annually on the same date and time.. Clocks are turned 1 hour backward. Also called Fall Back or switch to Winter Time.
Ehri, Eri, Iri, ary, ary klradw, eri, yi li, Ери, Ири, Эри, إري, اری، کلرادو, ایری، کولوراڈو, एरी, 伊利
40° 03' N Latitude / 105° 02' W Longitude
International Dialing Code