Sejong on 15 October 2026: sunrise 06:37, sunset 17:55, day length 11 h 17 min.
| Fact | Value |
|---|---|
| Time zone | Asia/Seoul |
| Offset | UTC+9 |
| Region | Sejong-si |
| Latitude | 36.5925 |
| Longitude | 127.2922 |
| Population | 394,630 |
Sejong has no clock change scheduled in the next year. The last year with a seasonal offset change was 1988. The offset now is UTC+9.
| Fact | Value |
|---|---|
| Longest day | 21 June 2026, 14 h 40 min |
| Shortest day | 22 December 2026, 9 h 40 min |
| Earliest sunrise | 05:11 on 13 June 2026 |
| Latest sunset | 19:53 on 29 June 2026 |
| Golden hour on the longest day | 21 June morning 05:12 to 05:51, evening 19:14 to 19:52 |
| Date | Holiday |
|---|---|
| 25 December 2026 | 기독탄신일 |
| 1 January 2027 | 신정 |
| 7 February 2027 | 설날 |
| City | 09:00 to 17:00 |
|---|---|
| London | Sejong and London have no hour that is 09:00 to 17:00 in both cities. |
| New York | Sejong and New York have no hour that is 09:00 to 17:00 in both cities. |