MST to MDT Converter

MDT is 1h 0m ahead of MST. When it's 12:00 PM MST, it's 1:00 PM MDT.

From

MST · UTC-7

9:09:45PM

Mountain Standard Time

e.g. Denver, Phoenix

To

MDT · UTC-6

10:09:45PM

Mountain Daylight Time

e.g. Denver

Open in World ClockMDT → MST
9:00 AM MST=10:00 AM MDT
12:00 PM MST=1:00 PM MDT
5:00 PM MST=6:00 PM MDT

Hourly conversion (MST → MDT)

MSTMDT
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM(+1 day)

Shaded rows are within standard working hours (8am–6pm) on both sides.

MST (UTC−7) is the standard-time offset; most of the US Mountain region uses MDT (UTC−6) in summer.

More MST conversions

Frequently asked questions

What is the time difference between MST and MDT?
MDT is 1h 0m ahead of MST. MST is UTC-7 and MDT is UTC-6.
What is 12:00 PM MST in MDT?
12:00 PM MST is 1:00 PM MDT.
Does MST change for daylight saving time?
MST (UTC−7) is the standard-time offset; most of the US Mountain region uses MDT (UTC−6) in summer.