When it is 12:00 PM in Concord, it is 1:00 AM the next day in Seoul.
📞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.
Concord is 13 hours behind Seoul.
🕐 Add 13 hours to Concord time to get Seoul time.
Concord uses 4 hours behind Universal Time (UTC-4) and Seoul uses 9 hours ahead of Universal Time (UTC+9).
| Concord Time | Seoul Time | |
|---|---|---|
| 12 AM Concord Time | ↔ | ☼ 1 PM Seoul Time |
| 1 AM Concord Time | ↔ | ☼ 2 PM Seoul Time |
| 2 AM Concord Time | ↔ | ☼ 3 PM Seoul Time |
| 3 AM Concord Time | ↔ | ☼ 4 PM Seoul Time |
| 4 AM Concord Time | ↔ | ☼ 5 PM Seoul Time |
| ☼ 5 AM Concord Time | ↔ | ☼ 6 PM Seoul Time |
| ☼ 6 AM Concord Time | ↔ | ☼ 7 PM Seoul Time |
| ☼ 7 AM Concord Time | ↔ | 8 PM Seoul Time |
| ☼ 8 AM Concord Time | ↔ | 9 PM Seoul Time |
| ☼ 9 AM Concord Time | ↔ | 10 PM Seoul Time |
| ☼ 10 AM Concord Time | ↔ | 11 PM Seoul Time |
| ☼ 11 AM Concord Time | ↔ | 12 AM Seoul Time |
| Concord Time | Seoul Time | |
|---|---|---|
| ☼ 12 PM Concord Time | ↔ | 1 AM Seoul Time |
| ☼ 1 PM Concord Time | ↔ | 2 AM Seoul Time |
| ☼ 2 PM Concord Time | ↔ | 3 AM Seoul Time |
| ☼ 3 PM Concord Time | ↔ | 4 AM Seoul Time |
| ☼ 4 PM Concord Time | ↔ | ☼ 5 AM Seoul Time |
| ☼ 5 PM Concord Time | ↔ | ☼ 6 AM Seoul Time |
| ☼ 6 PM Concord Time | ↔ | ☼ 7 AM Seoul Time |
| ☼ 7 PM Concord Time | ↔ | ☼ 8 AM Seoul Time |
| ☼ 8 PM Concord Time | ↔ | ☼ 9 AM Seoul Time |
| 9 PM Concord Time | ↔ | ☼ 10 AM Seoul Time |
| 10 PM Concord Time | ↔ | ☼ 11 AM Seoul Time |
| 11 PM Concord Time | ↔ | ☼ 12 PM Seoul Time |
Concord is 13 hours behind Seoul.
Concord is behind Seoul by 13 hours.
It is 10:00 PM in Seoul.