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