AST to MST/MDT time converter

MST/MDT is 9 hours behind AST. When it is 9:00 AM in AST, it is 12:00 AM in MST/MDT.

AST UTC+3

Friday, October 16, 2026

MST/MDT MDT

Friday, October 16, 2026

AST
Arabia Standard Time
Fri, Oct 16
UTC+3
MST/MDT
Mountain Standard Time
Fri, Oct 16
MDTUTC-6-9h
Finding your time zone…
Shared working hours (9:00–18:00)

AST to MST/MDT conversion table

Every hour of today in AST and the matching time in MST/MDT. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in AST (7:00 AM – 9:00 AM in MST/MDT): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because AST and MST/MDT switch clocks on different dates:

  • Oct 16, 2026 – Nov 1, 2026: -9h
  • Nov 1, 2026 – Mar 14, 2027: -10h
  • Mar 14, 2027 – Oct 16, 2027: -9h

More conversions

MST to AST (Arabia)AST (Arabia) to UTCAST (Arabia) to GMTAST (Arabia) to ESTAST (Arabia) to CSTAST (Arabia) to PSTAST (Arabia) to CETAST (Arabia) to MSKAST (Arabia) to GSTAST (Arabia) to PKTAST (Arabia) to ISTAST (Arabia) to SGTAST (Arabia) to PHT
UTC to MSTGMT to MSTEST to MSTCST to MSTPST to MSTCET to MSTMSK to MSTGST to MSTPKT to MSTIST to MSTSGT to MSTPHT to MST

Questions and answers

What is the time difference between AST and MST/MDT?

MST/MDT is 9 hours behind AST.

What time is it in MST/MDT when it is 9 AM in AST?

When it is 9:00 AM in AST, it is 12:00 AM in MST/MDT.

When is the best time to call MST/MDT from AST?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in AST (7:00 AM – 9:00 AM in MST/MDT): working hours on one side, early or late on the other.

Does the time difference between AST and MST/MDT change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.