Time difference between Seoul and San Francisco
San Francisco is 16 hours behind Seoul
Right now
Seoul
01:38
KST ·
UTC+9
San Francisco
09:38
PDT ·
UTC-7
Best time for a call between Seoul and San Francisco
Hours highlighted in green work for everyone on the list.
- 08:00 Seoul 16:00 San Francisco
- 09:00 Seoul 17:00 San Francisco
- 07:00 Seoul 15:00 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 August 27, 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?
The most convenient slot is 08:00 Seoul / 16:00 San Francisco. That keeps the call inside working hours in both cities.
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.