Time Difference: Seoul vs St. John's
Seoul
12:31:17 AM KST
Saturday, November 14, 2026
12h 30m
12h 30m
St. John's
12:01:17 PM NST
Friday, November 13, 2026
St. John's is 12.5 hours behind Seoul.
Quick Reference
- Seoul
- KST (GMT+9)
No Daylight Saving Time
- St. John's
- NST (GMT-3:30)
NDT starts on Mar 14, 2027
Frequently Asked Questions
- What is the time difference between Seoul and St. John's?
- St. John's is 12.5 hours behind Seoul.
- When is the best time to call from Seoul to St. John's?
- 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 St. John's uses NST.