Fall equinox
Wednesday, September 23, 2026
04:00 (Asia/Tokyo)
Days start growing shorter than nights in the north; spring begins in the south.
Seasons & Sun
Ōtsuki
Fall equinox
54 days away
Next event
Upcoming events
Fall equinox
Wednesday, September 23, 2026
04:00 (Asia/Tokyo)
Winter solstice
Tuesday, December 22, 2026
00:00 (Asia/Tokyo)
144 days away
Spring equinox
Saturday, March 20, 2027
18:00 (Asia/Tokyo)
232 days away
Summer solstice
Monday, June 21, 2027
13:00 (Asia/Tokyo)
325 days away
Fall equinox
Thursday, September 23, 2027
04:00 (Asia/Tokyo)
419 days away
Winter solstice
Wednesday, December 22, 2027
00:00 (Asia/Tokyo)
509 days away
Equinoxes
Day and night are nearly equal length worldwide. The Sun crosses the celestial equator — a key marker for seasonal change.
Solstices
The Sun reaches its northernmost or southernmost point in the sky. These are the longest and shortest days of the year.
Your hemisphere
Dates are shown in your local timezone. Season names reflect the Northern Hemisphere — the same astronomical event marks opposite seasons south of the equator.