Time Difference Between San Francisco and Seoul
San Francisco is normally 17 hours behind Seoul.
This page shows the live time difference between San Francisco, United States and Seoul, South Korea. San Francisco uses the America/Los_Angeles time zone (UTC-8 standard) and Seoul uses Asia/Seoul (UTC+9 standard), so San Francisco is normally 17 hours behind Seoul. Because San Francisco observes daylight saving time, the exact gap can shift by an hour during the year. The clocks above update live, so you always see the current difference, which is handy for scheduling calls, meetings and travel between the two cities.
San Francisco
- Country
- United States
- Time zone
- America/Los_Angeles
- Standard offset
- UTC-8
- Daylight saving
- Observed
- Current offset
- …
Seoul
- Country
- South Korea
- Time zone
- Asia/Seoul
- Standard offset
- UTC+9
- Daylight saving
- Not observed
- Current offset
- …
Best time to schedule a meeting
San Francisco and Seoul overlap for 1 hour of the working day: 16:00-17:00 in San Francisco, which is 09:00-10:00 in Seoul. That window is the realistic slot for a live call.
- Overlap
- 1 hour
- Window in San Francisco
- 16:00 - 17:00
- Window in Seoul
- 09:00 - 10:00
Based on a 9:00 to 17:00 working day in each city. The window above updates live, so it already accounts for daylight saving in either city.
Related time differences
- Amsterdam vs San Francisco
- Amsterdam vs Seoul
- Auckland vs San Francisco
- Auckland vs Seoul
- Bangkok vs San Francisco
- Bangkok vs Seoul
- Beijing vs San Francisco
- Beijing vs Seoul
- Berlin vs San Francisco
- Berlin vs Seoul
Compare any other two places on the time difference hub, or open the interactive world time zone map to pin cities and compare live.
Frequently asked questions
What is the time difference between San Francisco and Seoul?
San Francisco is normally 17 hours behind Seoul (San Francisco is UTC-8, Seoul is UTC+9). Daylight saving time can change this by an hour, so the live clocks above always show the current difference.
Is San Francisco ahead of or behind Seoul?
San Francisco is behind Seoul by 17 hours under standard time.
Do San Francisco and Seoul use daylight saving time?
San Francisco observes daylight saving time; Seoul does not.
What is the best time to schedule a meeting between San Francisco and Seoul?
Their working hours overlap for 1 hour: 16:00 to 17:00 in San Francisco, which is 09:00 to 10:00 in Seoul. That is the best window for a live call.