TimeThereSeoul to Seattle time difference
Seattle is 16h behind Seoul (as of 2026-09-30).
Seoul does not use daylight saving time. Seattle does, so the gap changes twice a year.
Every gap change in 2026 and 2027
Gap means how far Seattle is from Seoul. Times are local at the moment the new gap starts.
2026
| Seoul time | Seattle time | Gap |
|---|---|---|
| Sun, Mar 8, 19:00 | Sun, Mar 8, 03:00 | 17h behind to 16h behind (shrinks) |
| Sun, Nov 1, 18:00 | Sun, Nov 1, 01:00 | 16h behind to 17h behind (grows) |
2027
| Seoul time | Seattle time | Gap |
|---|---|---|
| Sun, Mar 14, 19:00 | Sun, Mar 14, 03:00 | 17h behind to 16h behind (shrinks) |
| Sun, Nov 7, 18:00 | Sun, Nov 7, 01:00 | 16h behind to 17h behind (grows) |
Business hours overlap
- 17h behind: Working days of 9:00 to 18:00: 2h shared (Seoul 09:00 to 11:00 is Seattle 16:00 to 18:00). Working days of 8:00 to 20:00: 5h shared (Seoul 08:00 to 13:00 is Seattle 15:00 to 20:00).
- 16h behind: Working days of 9:00 to 18:00: 1h shared (Seoul 09:00 to 10:00 is Seattle 17:00 to 18:00). Working days of 8:00 to 20:00: 4h shared (Seoul 08:00 to 12:00 is Seattle 16:00 to 20:00).
FAQ
What is the time difference between Seoul and Seattle?
Seattle is 17h behind from Jan 1, 2026, then 16h behind from Mar 8, 2026, then 17h behind from Nov 1, 2026, then 16h behind from Mar 14, 2027, then 17h behind from Nov 7, 2027. The exact number depends on daylight saving time.
When does the time difference between Seoul and Seattle change?
It changes on Mar 8, 2026, Nov 1, 2026, Mar 14, 2027, Nov 7, 2027 (dates in Seoul time).
What are good meeting times for Seoul and Seattle?
Working days of 9:00 to 18:00: 2h shared (Seoul 09:00 to 11:00 is Seattle 16:00 to 18:00). Working days of 8:00 to 20:00: 5h shared (Seoul 08:00 to 13:00 is Seattle 15:00 to 20:00). Check the table above because the gap moves on the dates listed.
Related pairs
- Seoul to San Francisco
- Seoul to Los Angeles
- Seoul to New York
- Seoul to Chicago
- Seoul to Austin
- Seoul to Toronto
- Seoul to London
- Seoul to Berlin
Data comes from the IANA time zone database as built into Node.js. Later rule changes by governments can move these dates.
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