Seattle to Seoul time converter
Seoul is 16 hours ahead of Seattle. When it is 9:00 AM in Seattle, it is 1:00 AM (Mon, Oct 19) in Seoul.
4:21 AM in Seattle, Sunday, October 18, 2026
Seattle to Seoul conversion table
Every hour of today in Seattle and the matching time in Seoul. Light rows are typical working hours (9:00–18:00).
| Seattle | Seoul |
|---|---|
| 12:00 AM | 4:00 PM |
| 1:00 AM | 5:00 PM |
| 2:00 AM | 6:00 PM |
| 3:00 AM | 7:00 PM |
| 4:00 AM | 8:00 PM |
| 5:00 AM | 9:00 PM |
| 6:00 AM | 10:00 PM |
| 7:00 AM | 11:00 PM |
| 8:00 AM | 12:00 AM+1 day |
| 9:00 AM | 1:00 AM+1 day |
| 10:00 AM | 2:00 AM+1 day |
| 11:00 AM | 3:00 AM+1 day |
| 12:00 PM | 4:00 AM+1 day |
| 1:00 PM | 5:00 AM+1 day |
| 2:00 PM | 6:00 AM+1 day |
| 3:00 PM | 7:00 AM+1 day |
| 4:00 PM | 8:00 AM+1 day |
| 5:00 PM | 9:00 AM+1 day |
| 6:00 PM | 10:00 AM+1 day |
| 7:00 PM | 11:00 AM+1 day |
| 8:00 PM | 12:00 PM+1 day |
| 9:00 PM | 1:00 PM+1 day |
| 10:00 PM | 2:00 PM+1 day |
| 11:00 PM | 3:00 PM+1 day |
Best time to call or meet
Both sides are at work from 5:00 PM – 6:00 PM in Seattle (9:00 AM – 10:00 AM in Seoul).
Daylight saving time and the difference
The difference changes during the year because Seattle and Seoul switch clocks on different dates:
- Oct 18, 2026 – Nov 1, 2026: +16h
- Nov 1, 2026 – Mar 14, 2027: +17h
- Mar 14, 2027 – Oct 18, 2027: +16h
Distance
Seattle and Seoul are 8,322 km (5,171 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Seattle and Seoul?
Seoul is 16 hours ahead of Seattle.
What time is it in Seoul when it is 9 AM in Seattle?
When it is 9:00 AM in Seattle, it is 1:00 AM (Mon, Oct 19) in Seoul.
When is the best time to call Seoul from Seattle?
Both sides are at work from 5:00 PM – 6:00 PM in Seattle (9:00 AM – 10:00 AM in Seoul).
Does the time difference between Seattle and Seoul change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.