Fall Equinox 2025 Southern Hemisphere. The autumnal equinox for the northern hemisphere and the first day of fall begin on the same day, at 8:44 a.m. This page provides date and time for autumnal equinox in the year 2025 for johannesburg, gauteng, south africa.

But if you hear another date mentioned,. In addition to equinoxes and solstices, two other astronomical periods occur yearly: