Fall Equinox 2024 Southern Hemisphere 2024. The 2024 fall equinox—also called the autumn equinox—takes place on sunday, september 22, 2024. Autumnal equinox marks the arrival of fall in the northern hemisphere.

Noaa) when is the first day of fall in 2024? However, it’s important to note that this only applies to the northern hemisphere, as the southern.