Time in AST and KST
The time difference between Atlantic Standard Time (AST) and Korea Standard Time (KST) is 13 hours. Korea Standard Time is 13 hours ahead of Atlantic Standard Time.
This means 9am AST is 10pm KST and 5pm AST is 6am KST (next day).
Atlantic Standard Time
- The current local time in AST is 2:48 pm (July 18, 2026)
- AST time zone offset is UTC-04:00
Korea Standard Time
- The current local time in KST is 7:48 pm (July 18, 2026)
- KST time zone offset is UTC+09:00
How to convert Atlantic Standard Time to Korea Standard Time?
Add 13 hours to Atlantic Standard Time to get Korea Standard Time.
Time in AST
00:00
Time in KST
00:00
Use the slider above to convert Atlantic Standard Time to Korea Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| AST | KST |
|---|---|
| 12am | 1pm |
| 1am | 2pm |
| 2am | 3pm |
| 3am | 4pm |
| 4am | 5pm |
| 5am | 6pm |
| 6am | 7pm |
| 7am | 8pm |
| 8am | 9pm |
| 9am | 10pm |
| 10am | 11pm |
| 11am | 12am |
| 12pm | 1am |
| 1pm | 2am |
| 2pm | 3am |
| 3pm | 4am |
| 4pm | 5am |
| 5pm | 6am |
| 6pm | 7am |
| 7pm | 8am |
| 8pm | 9am |
| 9pm | 10am |
| 10pm | 11am |
| 11pm | 12pm |