San Francisco is currently 16 hours behind of Seoul. Seoul is on UTC+9 and San Francisco is on UTC-7.
Because Seoul and San Francisco do not start and end daylight saving time together, the gap between them is not constant. Over the next twelve months it takes 2 different values.
| Seoul | San Francisco |
|---|---|
| 12:00 AM | 7:00 AM (previous day) |
| 1:00 AM | 8:00 AM (previous day) |
| 2:00 AM | 9:00 AM (previous day) |
| 3:00 AM | 10:00 AM (previous day) |
| 4:00 AM | 11:00 AM (previous day) |
| 5:00 AM | 12:00 PM (previous day) |
| 6:00 AM | 1:00 PM (previous day) |
| 7:00 AM | 2:00 PM (previous day) |
| 8:00 AM | 3:00 PM (previous day) |
| 9:00 AM | 4:00 PM (previous day) |
| 10:00 AM | 5:00 PM (previous day) |
| 11:00 AM | 6:00 PM (previous day) |
| 12:00 PM | 7:00 PM (previous day) |
| 1:00 PM | 8:00 PM (previous day) |
| 2:00 PM | 9:00 PM (previous day) |
| 3:00 PM | 10:00 PM (previous day) |
| 4:00 PM | 11:00 PM (previous day) |
| 5:00 PM | 12:00 AM |
| 6:00 PM | 1:00 AM |
| 7:00 PM | 2:00 AM |
| 8:00 PM | 3:00 AM |
| 9:00 PM | 4:00 AM |
| 10:00 PM | 5:00 AM |
| 11:00 PM | 6:00 AM |
| Seoul | San Francisco |
|---|---|
| 12:00 AM | 8:00 AM (previous day) |
| 1:00 AM | 9:00 AM (previous day) |
| 2:00 AM | 10:00 AM (previous day) |
| 3:00 AM | 11:00 AM (previous day) |
| 4:00 AM | 12:00 PM (previous day) |
| 5:00 AM | 1:00 PM (previous day) |
| 6:00 AM | 2:00 PM (previous day) |
| 7:00 AM | 3:00 PM (previous day) |
| 8:00 AM | 4:00 PM (previous day) |
| 9:00 AM | 5:00 PM (previous day) |
| 10:00 AM | 6:00 PM (previous day) |
| 11:00 AM | 7:00 PM (previous day) |
| 12:00 PM | 8:00 PM (previous day) |
| 1:00 PM | 9:00 PM (previous day) |
| 2:00 PM | 10:00 PM (previous day) |
| 3:00 PM | 11:00 PM (previous day) |
| 4:00 PM | 12:00 AM |
| 5:00 PM | 1:00 AM |
| 6:00 PM | 2:00 AM |
| 7:00 PM | 3:00 AM |
| 8:00 PM | 4:00 AM |
| 9:00 PM | 5:00 AM |
| 10:00 PM | 6:00 AM |
| 11:00 PM | 7:00 AM |
Taking a working day of 9:00 AM to 6:00 PM on both sides, the overlap in Seoul local time is 9:00 AM to 10:00 AM, which is 5:00 PM onward in San Francisco.
San Francisco is 16 hours behind of Seoul right now. That gap is not constant through the year, because the two places change their clocks on different dates.
9:00 AM in Seoul is 5:00 PM the previous day in San Francisco.
Assuming a 9:00 AM to 6:00 PM working day on both sides, the overlap in Seoul local time is 9:00 AM to 10:00 AM.
For the current time on its own, with the daylight saving dates that apply and the working week in that country, see time in Seoul or time in San Francisco.