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Time difference between San Francisco and Hong Kong
San Francisco
—
Hong Kong
—
Hong Kong is 15 hours ahead of San Francisco right now.
Does the gap change?
The gap isn't fixed. San Francisco changes its clocks for daylight saving time and Hong Kong doesn't, so the difference moves during the year:
- From around November 2, 2026: Hong Kong ahead by 16 hours
- From around March 15, 2027: Hong Kong ahead by 15 hours
Best time to meet
Normal office hours in Hong Kong and San Francisco don't overlap. The most workable window is 4 PM to 10 PM in San Francisco, which is 7 AM to 1 PM in Hong Kong, with one side starting early or finishing late.
For a recurring meeting, it's fairest to rotate which city takes the inconvenient slot.
City details
San Francisco to Hong Kong, hour by hour
| San Francisco | Hong Kong | ||
|---|---|---|---|
| 12 AM | Night | 3 PM | Work hours |
| 1 AM | Night | 4 PM | Work hours |
| 2 AM | Night | 5 PM | Early or late |
| 3 AM | Night | 6 PM | Early or late |
| 4 AM | Night | 7 PM | Early or late |
| 5 AM | Night | 8 PM | Early or late |
| 6 AM | Night | 9 PM | Early or late |
| 7 AM | Early or late | 10 PM | Night |
| 8 AM | Early or late | 11 PM | Night |
| 9 AM | Work hours | 12 AM (Thu) | Night |
| 10 AM | Work hours | 1 AM (Thu) | Night |
| 11 AM | Work hours | 2 AM (Thu) | Night |
| 12 PM | Work hours | 3 AM (Thu) | Night |
| 1 PM | Work hours | 4 AM (Thu) | Night |
| 2 PM | Work hours | 5 AM (Thu) | Night |
| 3 PM | Work hours | 6 AM (Thu) | Night |
| 4 PM | Work hours | 7 AM (Thu) | Early or late |
| 5 PM | Early or late | 8 AM (Thu) | Early or late |
| 6 PM | Early or late | 9 AM (Thu) | Work hours |
| 7 PM | Early or late | 10 AM (Thu) | Work hours |
| 8 PM | Early or late | 11 AM (Thu) | Work hours |
| 9 PM | Early or late | 12 PM (Thu) | Work hours |
| 10 PM | Night | 1 PM (Thu) | Work hours |
| 11 PM | Night | 2 PM (Thu) | Work hours |
Based on today's clocks. Work hours are 9 AM to 5 PM.