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About MDT
MDT (Mountain Daylight Time) is the daylight saving time observed in parts of North America during the warmer months of the year. The time zone offset of MDT is UTC−06:00, which means it is 6 hours behind Coordinated Universal Time (UTC).
Mountain Daylight Time is used to extend evening daylight during spring and summer. When daylight saving time ends, regions observing MDT switch back to Mountain Standard Time (MST), which has a UTC offset of UTC−07:00.
MDT is observed in several areas of the United States and Canada, including cities such as Denver, Calgary, Edmonton, and Albuquerque. It is one of the major daylight saving time zones used across North America.