🇯🇵 Japan
Autumn Equinox
Next observed on Wednesday, 23 September 2026.
When is Autumn Equinox in 2026?
Wednesday, 23 September 2026
Counting down to Autumn Equinox
What Autumn Equinox marks
The September equinox is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24.
Background summarised from Wikipedia — When sun appears directly over equator, available under CC BY-SA.
Autumn Equinox dates: 2026–2031
| Year | Date | Day | Full calendar |
|---|---|---|---|
| 2026 | Wednesday | Japan 2026 | |
| 2027 | Thursday | Japan 2027 | |
| 2028 | Friday | Japan 2028 | |
| 2029 | Sunday | Japan 2029 | |
| 2030 | Monday | Japan 2030 | |
| 2031 | Tuesday | Japan 2031 |
Frequently asked
When is Autumn Equinox in 2026?
Autumn Equinox falls on Wednesday, 23 September 2026 in Japan.
What day of the week is Autumn Equinox 2026?
Autumn Equinox 2026 falls on a Wednesday, 23 September 2026.
When is Autumn Equinox in 2027?
Autumn Equinox falls on Thursday, 23 September 2027.
Where is Autumn Equinox observed?
Observed nationally in Japan.
What does Autumn Equinox celebrate?
When sun appears directly over equator. The September equinox is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24.