Time difference between Seoul and San Francisco
San Francisco is 16 hours behind Seoul
Right now
Seoul
20:55
KST ·
UTC+9
San Francisco
04:55
PDT ·
UTC-7
Best time for a call between Seoul and San Francisco
These cities are too far apart for a meeting inside everyone’s working day. Someone will have to take it early or late.
- 09:00 Seoul 17:00 San Francisco
- 10:00 Seoul 18:00 San Francisco
- 11:00 Seoul 19:00 San Francisco
Hour by hour: Seoul to San Francisco
Working hours are shaded. The rows marked with a star are the ones we recommend for a call.
| Seoul (reference) | San Francisco | |
|---|---|---|
| 00:00 | 08:00 (previous day) | |
| 01:00 | 09:00 (previous day) | |
| 02:00 | 10:00 (previous day) | |
| 03:00 | 11:00 (previous day) | |
| 04:00 | 12:00 (previous day) | |
| 05:00 | 13:00 (previous day) | |
| 06:00 | 14:00 (previous day) | |
| 07:00 | 15:00 (previous day) | |
| 08:00 | 16:00 (previous day) | |
| ★ | 09:00 | 17:00 (previous day) |
| ★ | 10:00 | 18:00 (previous day) |
| ★ | 11:00 | 19:00 (previous day) |
| 12:00 | 20:00 (previous day) | |
| 13:00 | 21:00 (previous day) | |
| 14:00 | 22:00 (previous day) | |
| 15:00 | 23:00 (previous day) | |
| 16:00 | 00:00 | |
| 17:00 | 01:00 | |
| 18:00 | 02:00 | |
| 19:00 | 03:00 | |
| 20:00 | 04:00 | |
| 21:00 | 05:00 | |
| 22:00 | 06:00 | |
| 23:00 | 07:00 |
Table built for October 12, 2026. The live values above update in your browser.
Daylight saving time
San Francisco changes its clocks and Seoul does not, so the difference between them is not the same all year.
Frequently asked questions
What is the time difference between Seoul and San Francisco?
San Francisco is 16 hours behind Seoul
What is the best time to call between Seoul and San Francisco?
There is no hour that falls inside normal working hours in both cities. The least painful option is 09:00 Seoul / 17:00 San Francisco.
Does the difference between Seoul and San Francisco change during the year?
San Francisco changes its clocks and Seoul does not, so the difference between them is not the same all year.