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Time difference between San Francisco and Seoul
San Francisco
—
Seoul
—
Seoul is 17 hours ahead of San Francisco right now.
Does the gap change?
The gap isn't fixed. San Francisco changes its clocks for daylight saving time and Seoul doesn't, so the difference moves during the year:
- From around March 15, 2027: Seoul ahead by 16 hours
- From around November 8, 2027: Seoul ahead by 17 hours
Best time to meet
Office hours in Seoul and San Francisco overlap for about 1 hour a day, from 4 PM to 5 PM in San Francisco (9 AM to 10 AM in Seoul).
City details
San Francisco to Seoul, hour by hour
| San Francisco | Seoul | ||
|---|---|---|---|
| 12 AM | Night | 5 PM | Early or late |
| 1 AM | Night | 6 PM | Early or late |
| 2 AM | Night | 7 PM | Early or late |
| 3 AM | Night | 8 PM | Early or late |
| 4 AM | Night | 9 PM | Early or late |
| 5 AM | Night | 10 PM | Night |
| 6 AM | Night | 11 PM | Night |
| 7 AM | Early or late | 12 AM (Mon) | Night |
| 8 AM | Early or late | 1 AM (Mon) | Night |
| 9 AM | Work hours | 2 AM (Mon) | Night |
| 10 AM | Work hours | 3 AM (Mon) | Night |
| 11 AM | Work hours | 4 AM (Mon) | Night |
| 12 PM | Work hours | 5 AM (Mon) | Night |
| 1 PM | Work hours | 6 AM (Mon) | Night |
| 2 PM | Work hours | 7 AM (Mon) | Early or late |
| 3 PM | Work hours | 8 AM (Mon) | Early or late |
| 4 PM | Work hours | 9 AM (Mon) | Work hours |
| 5 PM | Early or late | 10 AM (Mon) | Work hours |
| 6 PM | Early or late | 11 AM (Mon) | Work hours |
| 7 PM | Early or late | 12 PM (Mon) | Work hours |
| 8 PM | Early or late | 1 PM (Mon) | Work hours |
| 9 PM | Early or late | 2 PM (Mon) | Work hours |
| 10 PM | Night | 3 PM (Mon) | Work hours |
| 11 PM | Night | 4 PM (Mon) | Work hours |
Based on today's clocks. Work hours are 9 AM to 5 PM.