AST
Riyadh
MST
Denver
Convert AST to MST
Arabia Standard Time to Mountain Standard Time — Denver is 9 hours behind Riyadh
8:27 PM
Friday, March 27, 2026
UTC+3
11:27 AM
Friday, March 27, 2026
UTC-6
Quick Facts
Time Difference
-9 hours
AST Full Name
Arabia Standard Time
MST Full Name
Mountain Standard Time
AST to MST Conversion Table
AST (Riyadh)
MST (Denver)
12:00 AM
3:00 PM(Mar 26)
1:00 AM
4:00 PM(Mar 26)
2:00 AM
5:00 PM(Mar 26)
3:00 AM
6:00 PM(Mar 26)
4:00 AM
7:00 PM(Mar 26)
5:00 AM
8:00 PM(Mar 26)
6:00 AM
9:00 PM(Mar 26)
7:00 AM
10:00 PM(Mar 26)
8:00 AM
11:00 PM(Mar 26)
9:00 AM
12:00 AM
10:00 AM
1:00 AM
11:00 AM
2:00 AM
12:00 PM
3:00 AM
1:00 PM
4:00 AM
2:00 PM
5:00 AM
3:00 PM
6:00 AM
4:00 PM
7:00 AM
5:00 PM
8:00 AM
6:00 PM
9:00 AM
7:00 PM
10:00 AM
8:00 PM
11:00 AM
9:00 PM
12:00 PM
10:00 PM
1:00 PM
11:00 PM
2:00 PM
Related Conversions
About AST and MST Time Zones
AST (Arabia Standard Time) is UTC+3 and is the standard time zone for Riyadh. MST (Mountain Standard Time) is UTC-6 and is the standard time zone for Denver.
When it's 12:00 PM (noon) in Riyadh (AST), it's 3:00 AM in Denver (MST). The time difference between AST and MST is 9 hours.
Use our world clock tool to compare Riyadh and Denver with a visual timeline, or browse more timezone conversions.