Longest and shortest day in Okayama
In Okayama, Japan, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 14h 29m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 9h 50m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 06:08 | 18:15 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 04:51 | 19:20 | 14h 29m |
| September equinox | Tuesday, 22 September 2026 | 05:51 | 18:01 | 12h 10m |
| December solstice | Monday, 21 December 2026 | 07:07 | 16:57 | 9h 50m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:11 | 17:16 | 10h 5m |
| February | 06:50 | 17:46 | 10h 56m |
| March | 06:15 | 18:11 | 11h 55m |
| April | 05:33 | 18:35 | 13h 2m |
| May | 05:02 | 18:59 | 13h 58m |
| June | 04:50 | 19:18 | 14h 28m |
| July | 05:02 | 19:17 | 14h 16m |
| August | 05:24 | 18:52 | 13h 28m |
| September | 05:46 | 18:11 | 12h 25m |
| October | 06:09 | 17:30 | 11h 21m |
| November | 06:37 | 16:59 | 10h 22m |
| December | 07:03 | 16:54 | 9h 51m |
Why the day gets longer and shorter in Okayama
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Okayama 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 Okayama sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Okayama
When is the longest day in Okayama?
The longest day in Okayama falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 14h 29m of daylight, sunrise at 04:51 and sunset at 19:20.
When is the shortest day in Okayama?
The shortest day in Okayama falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 9h 50m of daylight, sunrise at 07:07 and sunset at 16:57.
How much does day length change through the year in Okayama?
Between the longest and shortest day, Okayama gains and loses about 4h 39m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Okayama's coordinates with SunCalc, not looked up from a table.