Home   Time Zones   Abbreviations   MDT – Mountain Daylight Time

MDT – Mountain Daylight Time (Daylight Saving Time)

Time Zone names, codes and abbreviations for Standard Time and Daylight Saving Time (DST) around the world.

Also known as: MDST – Mountain Daylight Saving Time, NAMDT – North American Mountain Daylight Time

No locations currently on MDT. Would you like to see MST?

North America: MDT is currently not observed because locations are on standard time and are observing MST.

Time zone map of MDT
No locations currently on MDT.
Observes MDT part of the year.
Areas with same time currently (UTC -6).
No locations are currently on MDT – Mountain Daylight Time.
Observes MDT – Mountain Daylight Time part of the year, but not currently.
Currently has same time zone offset as MDT (UTC -6) but different time zone name.

Mountain Daylight Time (MDT) is 6 hours behind Coordinated Universal Time (UTC). This time zone is a Daylight Saving Time time zone and is used in: North America.

This time zone is often called Mountain Daylight Time.

See full time zone map

Winter Time & DST

This time zone is a daylight saving/summer time zone, in the winter some places will switch to the corresponding standard time zone: MST (Mountain Standard Time).

Where and When is MDT Observed?

North America

U.S. states using MDT in the summer and MST in the winter:

Canadian provinces/territories using MDT in the summer and MST in the winter:

Mexican states using MDT in the summer and MST in the winter:

Other Time Zones in UTC -6

Some time zones exist that have the same offset as MDT, but can be found under a different name: