MDT to AST Converter

AST is 2h 0m ahead of MDT. When it's 12:00 PM MDT, it's 2:00 PM AST.

From

MDT · UTC-6

10:09:45PM

Mountain Daylight Time

e.g. Denver

To

AST · UTC-4

12:09:45AM

Atlantic Standard Time

e.g. Halifax, Puerto Rico

Open in World ClockAST → MDT
9:00 AM MDT=11:00 AM AST
12:00 PM MDT=2:00 PM AST
5:00 PM MDT=7:00 PM AST

Hourly conversion (MDT → AST)

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

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

More MDT conversions

Frequently asked questions

What is the time difference between MDT and AST?
AST is 2h 0m ahead of MDT. MDT is UTC-6 and AST is UTC-4.
What is 12:00 PM MDT in AST?
12:00 PM MDT is 2:00 PM AST.
Does MDT change for daylight saving time?
MDT is a fixed offset of UTC-6 and does not itself change for daylight saving time.