Time Difference: Seoul vs Washington DC
Seoul
3:38:20 PM KST
Sunday, April 5, 2026
13h
13h
Washington DC
2:38:20 AM EDT
Sunday, April 5, 2026
Washington DC is 13 hours behind Seoul.
Quick Reference
- Seoul
- KST (GMT+9)
No Daylight Saving Time
- Washington DC
- EDT (GMT-4)
EST starts on Nov 1, 2026
Frequently Asked Questions
- What is the time difference between Seoul and Washington DC?
- Washington DC is 13 hours behind Seoul.
- When is the best time to call from Seoul to Washington DC?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Seoul uses KST and Washington DC uses EDT.