Time difference between Hong Kong and San Francisco
Hong Kong is 15h ahead of San Francisco. This gap is not fixed: daylight saving time moves it between +15h and +16h during the year.
Hong Kong
Hong Kong SAR China
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San Francisco
United States
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When the working days overlap
A 9-to-5 working day in Hong Kong does not overlap one in San Francisco at all — somebody has to take the call outside office hours.
Time zones compared
| City | Time zone | UTC offset |
|---|---|---|
| Hong Kong · Hong Kong SAR China | Asia/Hong_Kong | UTC+8 |
| San Francisco · United States | America/Los_Angeles | UTC−7 |
Frequently asked questions
- What is the time difference between Hong Kong and San Francisco?
- Hong Kong is 15h ahead of San Francisco. This gap is not fixed: daylight saving time moves it between +15h and +16h during the year.
- Does the time difference between Hong Kong and San Francisco change during the year?
- Yes. Because of daylight saving time the gap moves between +15h and +16h.
- When is the best time to call San Francisco from Hong Kong?
- There is no overlap between standard working days, so one side has to call early or late.