Autumn Equinox 2024 South Africa. Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator,. Download the monthly calendar for the autumn of 2024.
December 21, 2024 at 1:20 am pst. The date of the equinox is not fixed, due to the earth’s.