Longest and shortest day in Kawaguchi
In Kawaguchi, Japan, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 14h 35m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 9h 44m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 05:45 | 17:52 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 04:25 | 19:00 | 14h 35m |
| September equinox | Tuesday, 22 September 2026 | 05:28 | 17:38 | 12h 10m |
| December solstice | Monday, 21 December 2026 | 06:47 | 16:30 | 9h 44m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 06:50 | 16:50 | 9h 59m |
| February | 06:28 | 17:22 | 10h 53m |
| March | 05:53 | 17:48 | 11h 55m |
| April | 05:09 | 18:13 | 13h 5m |
| May | 04:36 | 18:39 | 14h 3m |
| June | 04:24 | 18:58 | 14h 34m |
| July | 04:36 | 18:57 | 14h 22m |
| August | 04:59 | 18:31 | 13h 32m |
| September | 05:23 | 17:49 | 12h 26m |
| October | 05:47 | 17:06 | 11h 19m |
| November | 06:16 | 16:34 | 10h 18m |
| December | 06:43 | 16:28 | 9h 45m |
Why the day gets longer and shorter in Kawaguchi
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Kawaguchi 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 Kawaguchi sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Kawaguchi
When is the longest day in Kawaguchi?
The longest day in Kawaguchi falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 14h 35m of daylight, sunrise at 04:25 and sunset at 19:00.
When is the shortest day in Kawaguchi?
The shortest day in Kawaguchi falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 9h 44m of daylight, sunrise at 06:47 and sunset at 16:30.
How much does day length change through the year in Kawaguchi?
Between the longest and shortest day, Kawaguchi gains and loses about 4h 51m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Kawaguchi's coordinates with SunCalc, not looked up from a table.