Singapore is currently 15 hours ahead of San Francisco. San Francisco is on UTC-7 and Singapore is on UTC+8.
Because San Francisco and Singapore 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.
| San Francisco | Singapore |
|---|---|
| 12:00 AM | 3:00 PM |
| 1:00 AM | 4:00 PM |
| 2:00 AM | 5:00 PM |
| 3:00 AM | 6:00 PM |
| 4:00 AM | 7:00 PM |
| 5:00 AM | 8:00 PM |
| 6:00 AM | 9:00 PM |
| 7:00 AM | 10:00 PM |
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM (next day) |
| 10:00 AM | 1:00 AM (next day) |
| 11:00 AM | 2:00 AM (next day) |
| 12:00 PM | 3:00 AM (next day) |
| 1:00 PM | 4:00 AM (next day) |
| 2:00 PM | 5:00 AM (next day) |
| 3:00 PM | 6:00 AM (next day) |
| 4:00 PM | 7:00 AM (next day) |
| 5:00 PM | 8:00 AM (next day) |
| 6:00 PM | 9:00 AM (next day) |
| 7:00 PM | 10:00 AM (next day) |
| 8:00 PM | 11:00 AM (next day) |
| 9:00 PM | 12:00 PM (next day) |
| 10:00 PM | 1:00 PM (next day) |
| 11:00 PM | 2:00 PM (next day) |
| San Francisco | Singapore |
|---|---|
| 12:00 AM | 4:00 PM |
| 1:00 AM | 5:00 PM |
| 2:00 AM | 6:00 PM |
| 3:00 AM | 7:00 PM |
| 4:00 AM | 8:00 PM |
| 5:00 AM | 9:00 PM |
| 6:00 AM | 10:00 PM |
| 7:00 AM | 11:00 PM |
| 8:00 AM | 12:00 AM (next day) |
| 9:00 AM | 1:00 AM (next day) |
| 10:00 AM | 2:00 AM (next day) |
| 11:00 AM | 3:00 AM (next day) |
| 12:00 PM | 4:00 AM (next day) |
| 1:00 PM | 5:00 AM (next day) |
| 2:00 PM | 6:00 AM (next day) |
| 3:00 PM | 7:00 AM (next day) |
| 4:00 PM | 8:00 AM (next day) |
| 5:00 PM | 9:00 AM (next day) |
| 6:00 PM | 10:00 AM (next day) |
| 7:00 PM | 11:00 AM (next day) |
| 8:00 PM | 12:00 PM (next day) |
| 9:00 PM | 1:00 PM (next day) |
| 10:00 PM | 2:00 PM (next day) |
| 11:00 PM | 3:00 PM (next day) |
With a working day of 9:00 AM to 6:00 PM on both sides there is no overlap at all between San Francisco and Singapore. One side has to take the call outside office hours, so the usual compromise is early morning in the west or late evening in the east.
Singapore is 15 hours ahead of San Francisco right now. That gap is not constant through the year, because the two places change their clocks on different dates.
9:00 AM in San Francisco is 12:00 AM the next day in Singapore.
There is no overlap between a 9:00 AM to 6:00 PM working day in San Francisco and the same in Singapore. One side has to meet outside office hours.
For the current time on its own, with the daylight saving dates that apply and the working week in that country, see time in San Francisco or time in Singapore.