Longest and shortest day in Koto
In Koto, Japan, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 14h 19m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 10h 0m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 06:21 | 18:28 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 05:09 | 19:28 | 14h 19m |
| September equinox | Tuesday, 22 September 2026 | 06:04 | 18:14 | 12h 9m |
| December solstice | Monday, 21 December 2026 | 07:15 | 17:14 | 10h 0m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:19 | 17:33 | 10h 13m |
| February | 07:00 | 18:01 | 11h 1m |
| March | 06:28 | 18:24 | 11h 56m |
| April | 05:48 | 18:46 | 12h 58m |
| May | 05:18 | 19:08 | 13h 50m |
| June | 05:08 | 19:26 | 14h 18m |
| July | 05:19 | 19:26 | 14h 7m |
| August | 05:40 | 19:02 | 13h 22m |
| September | 06:00 | 18:23 | 12h 23m |
| October | 06:20 | 17:44 | 11h 24m |
| November | 06:46 | 17:16 | 10h 29m |
| December | 07:11 | 17:12 | 10h 1m |
Why the day gets longer and shorter in Koto
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Koto leans toward the Sun for part of the year and away for the rest. When it leans toward the Sun the days lengthen and the Sun climbs higher; half a year later the opposite happens. The size of the swing depends on how far Koto sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Koto
When is the longest day in Koto?
The longest day in Koto falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 14h 19m of daylight, sunrise at 05:09 and sunset at 19:28.
When is the shortest day in Koto?
The shortest day in Koto falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 10h 0m of daylight, sunrise at 07:15 and sunset at 17:14.
How much does day length change through the year in Koto?
Between the longest and shortest day, Koto gains and loses about 4h 19m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Koto's coordinates with SunCalc, not looked up from a table.