September Equinox 2024 Olympics. On the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the northern hemisphere to the southern. Aman sehrawat in action against former world champion zelimkhan.
Spring equinox 20 march, summer solstice 21 june, autumn equinox 22 september, winter solstice 21 december. But what exactly is the autumnal equinox, and why does it start this year at.