There are no overlapping standard business hours (9am - 5pm). Use the interactive converter above to visually compare hours side by side.

Seoul

KST (GMT+9)

No Daylight Saving Time

St. John's

NST (GMT-3:30)

NDT starts on Mar 14, 2027

What is the best time to schedule a meeting between Seoul and St. John's?

There are no overlapping business hours. Consider early morning or late evening meetings, or use the interactive converter on this page to find a workable time slot.

How many hours apart are Seoul and St. John's?

St. John's is 12.5 hours behind Seoul.

Does the overlap change with daylight saving time?

St. John's observes daylight saving time (NDT starts on Mar 14, 2027) but Seoul does not, so the overlap may shift by an hour seasonally. The interactive converter on this page always reflects the current offset, even across daylight saving transition.