AST to KST

Atlantic Standard Time

Atlantic Standard Time (AST)

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

↑ ↓

Korean Standard Time

Korean Standard Time (KST)

KST is 9 hours ahead of Universal Time (UTC+9)

AST to KST Time Conversion

When it is 12:00 PM in AST, it is 1:00 AM the next day in KST.

📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.

Time difference between AST and KST

AST is 13 hours behind KST.

🕐 Add 13 hours to AST time to get KST time.

AST uses 4 hours behind Universal Time (UTC-4) and KST uses 9 hours ahead of Universal Time (UTC+9).

AST to KST time conversion chart (24 hours)

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

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

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

AST to KST - Frequently Asked Questions

Q

What is the time difference between AST and KST?

A

AST is 13 hours behind KST.

Q

Is AST ahead of or behind KST?

A

AST is behind KST by 13 hours.

Q

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

A

It is 10:00 PM in KST.

Convert AST Time to Popular Time Zones

Convert Time in Popular Time Zones to KST