July 21, 2026 · Koshigaya, Japan
Sunset in Koshigaya today is at 18:55. Day length is 14h 15m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Koshigaya's coordinates and updated daily.
Koshigaya lies at 36°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 Koshigaya.
The longest day in Koshigaya is around 14h 36m (around June 21). The shortest is around 9h 43m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 16:50 | 06:51 | 9h 59m |
| February | 17:22 | 06:30 | 10h 52m |
| March | 17:48 | 05:54 | 11h 55m |
| April | 18:14 | 05:09 | 13h 4m |
| May | 18:39 | 04:37 | 14h 3m |
| June | 18:59 | 04:25 | 14h 35m |
| July | 18:59 | 04:36 | 14h 23m |
| August | 18:33 | 05:00 | 13h 33m |
| September | 17:51 | 05:24 | 12h 27m |
| October | 17:07 | 05:47 | 11h 20m |
| November | 16:35 | 06:17 | 10h 18m |
| December | 16:29 | 06:44 | 9h 45m |