AST to CST

CST is currently not used in any location. Locations using this time are currently using CDT time.

Atlantic Standard Time

Atlantic Standard Time (AST)

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

↑ ↓

Cuba Standard Time

Cuba Standard Time (CST)

CST is 5 hours behind Universal Time (UTC-5)

AST to CST Time Conversion

When it is 12:00 PM in AST, it is 11:00 AM in CST.

📞The best time to schedule a call is between 10 AM and 5 PM in AST, which is between 9 AM and 4 PM in CST.

Time difference between AST and CST

AST is 1 hour ahead of CST.

🕐 Subtract 1 hour from AST time to get CST time.

AST uses 4 hours behind Universal Time (UTC-4) and CST uses 5 hours behind Universal Time (UTC-5).

AST to CST time conversion chart (24 hours)

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

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

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

AST to CST - Frequently Asked Questions

Q

What is the time difference between AST and CST?

A

AST is 1 hour ahead of CST.

Q

Is AST ahead of or behind CST?

A

AST is ahead of CST by 1 hour.

Q

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

A

It is 8:00 AM in CST.

Convert AST Time to Popular Time Zones

Convert Time in Popular Time Zones to CST