MST to AST

Mountain Standard Time

Mountain Standard Time (MST)

MST is 7 hours behind Universal Time (UTC-7)

↑ ↓

Atlantic Standard Time

Atlantic Standard Time (AST)

AST is 4 hours behind Universal Time (UTC-4)

MST to AST Time Conversion

When it is 12:00 PM in MST, it is 3:00 PM in AST.

📞The best time to schedule a call is between 9 AM and 2 PM in MST, which is between 12 PM and 5 PM in AST.

Time difference between MST and AST

MST is 3 hours behind AST.

🕐 Add 3 hours to MST time to get AST time.

MST uses 7 hours behind Universal Time (UTC-7) and AST uses 4 hours behind Universal Time (UTC-4).

MST to AST time conversion chart (24 hours)

Highlighted rows are overlapping 9-to-5 business hours – the best time to schedule a call between MST and AST.

MST Time		AST Time
12 AM MST Time	↔	3 AM AST Time
1 AM MST Time	↔	4 AM AST Time
2 AM MST Time	↔	5 AM AST Time
3 AM MST Time	↔	6 AM AST Time
4 AM MST Time	↔	7 AM AST Time
5 AM MST Time	↔	8 AM AST Time
6 AM MST Time	↔	9 AM AST Time
7 AM MST Time	↔	10 AM AST Time
8 AM MST Time	↔	11 AM AST Time
9 AM MST Time	↔	12 PM AST Time
10 AM MST Time	↔	1 PM AST Time
11 AM MST Time	↔	2 PM AST Time

MST Time		AST Time
12 PM MST Time	↔	3 PM AST Time
1 PM MST Time	↔	4 PM AST Time
2 PM MST Time	↔	5 PM AST Time
3 PM MST Time	↔	6 PM AST Time
4 PM MST Time	↔	7 PM AST Time
5 PM MST Time	↔	8 PM AST Time
6 PM MST Time	↔	9 PM AST Time
7 PM MST Time	↔	10 PM AST Time
8 PM MST Time	↔	11 PM AST Time
9 PM MST Time	↔	12 AM AST Time
10 PM MST Time	↔	1 AM AST Time
11 PM MST Time	↔	2 AM AST Time

MST to AST - Frequently Asked Questions

Q

What is the time difference between MST and AST?

A

MST is 3 hours behind AST.

Q

Is MST ahead of or behind AST?

A

MST is behind AST by 3 hours.

Q

When it is 9:00 AM in MST, what time is it in AST?

A

It is 12:00 PM in AST.

Convert MST Time to Popular Time Zones

Convert Time in Popular Time Zones to AST