Autumnal Equinox 2024 Deutsch. 22 marks the official first day of fall this year, but that's not always the case. The autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon.

The 2024 fall equinox—also called the autumn equinox—takes place on sunday, september 22, 2024. In the southern hemisphere, it is the equinox in march.