When it is 12:00 PM in Rio Maior, it is 4:00 AM in San Diego.
📞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.
Rio Maior is 8 hours ahead of San Diego.
🕐 Subtract 8 hours from Rio Maior time to get San Diego time.
Rio Maior uses 1 hour ahead of Universal Time (UTC+1) and San Diego uses 7 hours behind Universal Time (UTC-7).
| Rio Maior Time | San Diego Time | |
|---|---|---|
| 12 AM Rio Maior Time | ↔ | ☼ 4 PM San Diego Time |
| 1 AM Rio Maior Time | ↔ | ☼ 5 PM San Diego Time |
| 2 AM Rio Maior Time | ↔ | ☼ 6 PM San Diego Time |
| 3 AM Rio Maior Time | ↔ | ☼ 7 PM San Diego Time |
| 4 AM Rio Maior Time | ↔ | 8 PM San Diego Time |
| 5 AM Rio Maior Time | ↔ | 9 PM San Diego Time |
| ☼ 6 AM Rio Maior Time | ↔ | 10 PM San Diego Time |
| ☼ 7 AM Rio Maior Time | ↔ | 11 PM San Diego Time |
| ☼ 8 AM Rio Maior Time | ↔ | 12 AM San Diego Time |
| ☼ 9 AM Rio Maior Time | ↔ | 1 AM San Diego Time |
| ☼ 10 AM Rio Maior Time | ↔ | 2 AM San Diego Time |
| ☼ 11 AM Rio Maior Time | ↔ | 3 AM San Diego Time |
| Rio Maior Time | San Diego Time | |
|---|---|---|
| ☼ 12 PM Rio Maior Time | ↔ | 4 AM San Diego Time |
| ☼ 1 PM Rio Maior Time | ↔ | ☼ 5 AM San Diego Time |
| ☼ 2 PM Rio Maior Time | ↔ | ☼ 6 AM San Diego Time |
| ☼ 3 PM Rio Maior Time | ↔ | ☼ 7 AM San Diego Time |
| ☼ 4 PM Rio Maior Time | ↔ | ☼ 8 AM San Diego Time |
| ☼ 5 PM Rio Maior Time | ↔ | ☼ 9 AM San Diego Time |
| ☼ 6 PM Rio Maior Time | ↔ | ☼ 10 AM San Diego Time |
| ☼ 7 PM Rio Maior Time | ↔ | ☼ 11 AM San Diego Time |
| ☼ 8 PM Rio Maior Time | ↔ | ☼ 12 PM San Diego Time |
| ☼ 9 PM Rio Maior Time | ↔ | ☼ 1 PM San Diego Time |
| 10 PM Rio Maior Time | ↔ | ☼ 2 PM San Diego Time |
| 11 PM Rio Maior Time | ↔ | ☼ 3 PM San Diego Time |
Rio Maior is 8 hours ahead of San Diego.
Rio Maior is ahead of San Diego by 8 hours.
It is 1:00 AM in San Diego.