When it is 12:00 PM in San Mateo, it is 3:00 AM the next day in Shanghai.
📞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 Shanghai.
🕐 Add 15 hours to San Mateo time to get Shanghai time.
San Mateo uses 7 hours behind Universal Time (UTC-7) and Shanghai uses 8 hours ahead of Universal Time (UTC+8).
| San Mateo Time | Shanghai Time | |
|---|---|---|
| 12 AM San Mateo Time | ↔ | ☼ 3 PM Shanghai Time |
| 1 AM San Mateo Time | ↔ | ☼ 4 PM Shanghai Time |
| 2 AM San Mateo Time | ↔ | ☼ 5 PM Shanghai Time |
| 3 AM San Mateo Time | ↔ | ☼ 6 PM Shanghai Time |
| 4 AM San Mateo Time | ↔ | ☼ 7 PM Shanghai Time |
| ☼ 5 AM San Mateo Time | ↔ | 8 PM Shanghai Time |
| ☼ 6 AM San Mateo Time | ↔ | 9 PM Shanghai Time |
| ☼ 7 AM San Mateo Time | ↔ | 10 PM Shanghai Time |
| ☼ 8 AM San Mateo Time | ↔ | 11 PM Shanghai Time |
| ☼ 9 AM San Mateo Time | ↔ | 12 AM Shanghai Time |
| ☼ 10 AM San Mateo Time | ↔ | 1 AM Shanghai Time |
| ☼ 11 AM San Mateo Time | ↔ | 2 AM Shanghai Time |
| San Mateo Time | Shanghai Time | |
|---|---|---|
| ☼ 12 PM San Mateo Time | ↔ | 3 AM Shanghai Time |
| ☼ 1 PM San Mateo Time | ↔ | ☼ 4 AM Shanghai Time |
| ☼ 2 PM San Mateo Time | ↔ | ☼ 5 AM Shanghai Time |
| ☼ 3 PM San Mateo Time | ↔ | ☼ 6 AM Shanghai Time |
| ☼ 4 PM San Mateo Time | ↔ | ☼ 7 AM Shanghai Time |
| ☼ 5 PM San Mateo Time | ↔ | ☼ 8 AM Shanghai Time |
| ☼ 6 PM San Mateo Time | ↔ | ☼ 9 AM Shanghai Time |
| ☼ 7 PM San Mateo Time | ↔ | ☼ 10 AM Shanghai Time |
| ☼ 8 PM San Mateo Time | ↔ | ☼ 11 AM Shanghai Time |
| 9 PM San Mateo Time | ↔ | ☼ 12 PM Shanghai Time |
| 10 PM San Mateo Time | ↔ | ☼ 1 PM Shanghai Time |
| 11 PM San Mateo Time | ↔ | ☼ 2 PM Shanghai Time |
San Mateo is 15 hours behind Shanghai.
San Mateo is behind Shanghai by 15 hours.
It is 12:00 AM the next day in Shanghai.