Time Difference Between San Francisco and Seoul
Seoul is 16h ahead of San Francisco.
This is the standard-time difference as of 2026. If either city observes daylight saving time, the actual difference can shift by up to an hour for part of the year — the live clocks below always show the current real-time difference.
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Working Hours Overlap
For each hour of San Francisco's working day (9:00-18:00), here is the corresponding local time in Seoul. Rows highlighted green fall within standard working hours (9:00-18:00) in both cities.
| San Francisco | Seoul | Both working hours? |
|---|---|---|
| 9 AM | 1 AM | No |
| 10 AM | 2 AM | No |
| 11 AM | 3 AM | No |
| 12 PM | 4 AM | No |
| 1 PM | 5 AM | No |
| 2 PM | 6 AM | No |
| 3 PM | 7 AM | No |
| 4 PM | 8 AM | No |
| 5 PM | 9 AM | Yes |
| 6 PM | 10 AM | No |
Best Time to Meet
- 5 PM-6 PM in San Francisco (9 AM-10 AM in Seoul) works for both sides — it falls within standard 9 AM-6 PM working hours in both time zones.
San Francisco
San Francisco uses the America/Los_Angeles IANA time zone, currently at UTC-7. This zone observes daylight saving time.
Seoul
Seoul uses the Asia/Seoul IANA time zone, currently at UTC+9. This zone does not observe daylight saving time.