July 21, 2026 · Sejong, South Korea
Sunset in Sejong today is at 19:47. Day length is 14h 19m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Sejong's coordinates and updated daily.
Sejong lies at 37°N. At this latitude, day length varies moderately — from around 10 hours in midwinter to 14–15 hours in midsummer.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Sejong.
The longest day in Sejong is around 14h 40m (around June 21). The shortest is around 9h 39m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:38 | 07:43 | 9h 55m |
| February | 18:11 | 07:21 | 10h 51m |
| March | 18:38 | 06:44 | 11h 54m |
| April | 19:05 | 05:59 | 13h 6m |
| May | 19:31 | 05:25 | 14h 6m |
| June | 19:51 | 05:13 | 14h 39m |
| July | 19:50 | 05:24 | 14h 26m |
| August | 19:24 | 05:49 | 13h 35m |
| September | 18:41 | 06:13 | 12h 28m |
| October | 17:57 | 06:38 | 11h 19m |
| November | 17:24 | 07:09 | 10h 15m |
| December | 17:17 | 07:36 | 9h 41m |