Hong Kong zone
GMT+8 (GMT+8)
San Francisco zone
PDT (GMT-7)
Difference
15 hours behind Hong Kong
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in Hong Kong. Filled cells mark when 9 AM – 5 PM in Hong Kong and San Francisco both apply.
0 hours per day
- Hong Kong
- GMT+8
- San Francisco
- GMT-7
- Difference
- -15h
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in San Francisco for an hour in Hong Kong.
| Hong Kong | San Francisco | Day | Window |
|---|---|---|---|
| 12:00 AM | 9:00 AM | previous day | — |
| 1:00 AM | 10:00 AM | previous day | — |
| 2:00 AM | 11:00 AM | previous day | — |
| 3:00 AM | 12:00 PM | previous day | — |
| 4:00 AM | 1:00 PM | previous day | — |
| 5:00 AM | 2:00 PM | previous day | — |
| 6:00 AM | 3:00 PM | previous day | — |
| 7:00 AM | 4:00 PM | previous day | — |
| 8:00 AM | 5:00 PM | previous day | — |
| 9:00 AM | 6:00 PM | previous day | — |
| 10:00 AM | 7:00 PM | previous day | — |
| 11:00 AM | 8:00 PM | previous day | — |
| 12:00 PM | 9:00 PM | previous day | — |
| 1:00 PM | 10:00 PM | previous day | — |
| 2:00 PM | 11:00 PM | previous day | — |
| 3:00 PM | 12:00 AM | same day | — |
| 4:00 PM | 1:00 AM | same day | — |
| 5:00 PM | 2:00 AM | same day | — |
| 6:00 PM | 3:00 AM | same day | — |
| 7:00 PM | 4:00 AM | same day | — |
| 8:00 PM | 5:00 AM | same day | — |
| 9:00 PM | 6:00 AM | same day | — |
| 10:00 PM | 7:00 AM | same day | — |
| 11:00 PM | 8:00 AM | same day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in Hong Kong and San Francisco do not overlap. Plan calls for early Hong Kong morning or late Hong Kong evening, and rotate the burden between sides.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Hong Kong time to San Francisco time
Hong Kong follows the Asia/Hong_Kong time zone (currently GMT+8, GMT+8), while San Francisco follows America/Los_Angeles (currently PDT, GMT-7). San Francisco is 15 hours behind Hong Kong right now.
San Francisco observes daylight saving time, while Hong Kong does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Hong Kong
Does not observe daylight saving time.
San Francisco
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Reverse this conversion
San Francisco to Hong Kong
Open the converter
Plan a meeting between Hong Kong and San Francisco
More conversions from Hong Kong
Frequently asked questions
- How many hours is Hong Kong from San Francisco?
- San Francisco is 15 hours behind Hong Kong right now.
- What time is 9:00 AM Hong Kong in San Francisco?
- 9:00 AM in Hong Kong is 6:00 PM (previous day) in San Francisco.
- What time is 5:00 PM Hong Kong in San Francisco?
- 5:00 PM in Hong Kong is 2:00 AM in San Francisco.
- When do Hong Kong and San Francisco business hours overlap?
- Standard 9 AM - 5 PM working hours in Hong Kong and San Francisco do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between Hong Kong and San Francisco?
- San Francisco observes daylight saving time while Hong Kong does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Hong Kong
Local time page
Time in San Francisco