When it is 12:00 PM in San Mateo, it is 3:00 AM the next day in Hong Kong.
📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.
San Mateo is 15 hours behind Hong Kong.
🕐 Add 15 hours to San Mateo time to get Hong Kong time.
San Mateo uses 7 hours behind Universal Time (UTC-7) and Hong Kong uses 8 hours ahead of Universal Time (UTC+8).
| San Mateo Time | Hong Kong Time | |
|---|---|---|
| 12 AM San Mateo Time | ↔ | ☼ 3 PM Hong Kong Time |
| 1 AM San Mateo Time | ↔ | ☼ 4 PM Hong Kong Time |
| 2 AM San Mateo Time | ↔ | ☼ 5 PM Hong Kong Time |
| 3 AM San Mateo Time | ↔ | ☼ 6 PM Hong Kong Time |
| 4 AM San Mateo Time | ↔ | ☼ 7 PM Hong Kong Time |
| ☼ 5 AM San Mateo Time | ↔ | 8 PM Hong Kong Time |
| ☼ 6 AM San Mateo Time | ↔ | 9 PM Hong Kong Time |
| ☼ 7 AM San Mateo Time | ↔ | 10 PM Hong Kong Time |
| ☼ 8 AM San Mateo Time | ↔ | 11 PM Hong Kong Time |
| ☼ 9 AM San Mateo Time | ↔ | 12 AM Hong Kong Time |
| ☼ 10 AM San Mateo Time | ↔ | 1 AM Hong Kong Time |
| ☼ 11 AM San Mateo Time | ↔ | 2 AM Hong Kong Time |
| San Mateo Time | Hong Kong Time | |
|---|---|---|
| ☼ 12 PM San Mateo Time | ↔ | 3 AM Hong Kong Time |
| ☼ 1 PM San Mateo Time | ↔ | 4 AM Hong Kong Time |
| ☼ 2 PM San Mateo Time | ↔ | ☼ 5 AM Hong Kong Time |
| ☼ 3 PM San Mateo Time | ↔ | ☼ 6 AM Hong Kong Time |
| ☼ 4 PM San Mateo Time | ↔ | ☼ 7 AM Hong Kong Time |
| ☼ 5 PM San Mateo Time | ↔ | ☼ 8 AM Hong Kong Time |
| ☼ 6 PM San Mateo Time | ↔ | ☼ 9 AM Hong Kong Time |
| ☼ 7 PM San Mateo Time | ↔ | ☼ 10 AM Hong Kong Time |
| ☼ 8 PM San Mateo Time | ↔ | ☼ 11 AM Hong Kong Time |
| 9 PM San Mateo Time | ↔ | ☼ 12 PM Hong Kong Time |
| 10 PM San Mateo Time | ↔ | ☼ 1 PM Hong Kong Time |
| 11 PM San Mateo Time | ↔ | ☼ 2 PM Hong Kong Time |
San Mateo is 15 hours behind Hong Kong.
San Mateo is behind Hong Kong by 15 hours.
It is 12:00 AM the next day in Hong Kong.