July 21, 2026 · Kosan, North Korea
Sunset in Kosan today is at 19:53. Day length is 14h 30m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Kosan's coordinates and updated daily.
Kosan lies at 39°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 Kosan.
The longest day in Kosan is around 14h 54m (around June 21). The shortest is around 9h 26m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:32 | 07:48 | 9h 44m |
| February | 18:08 | 07:23 | 10h 44m |
| March | 18:37 | 06:44 | 11h 53m |
| April | 19:07 | 05:55 | 13h 11m |
| May | 19:36 | 05:19 | 14h 16m |
| June | 19:58 | 05:05 | 14h 52m |
| July | 19:56 | 05:18 | 14h 39m |
| August | 19:27 | 05:44 | 13h 43m |
| September | 18:41 | 06:12 | 12h 29m |
| October | 17:54 | 06:40 | 11h 15m |
| November | 17:18 | 07:13 | 10h 5m |
| December | 17:10 | 07:42 | 9h 28m |