When Is The Autumn Equinox 2024. In 2024, the autumnal equinox will take. The occurrence of spring equinox usually falls on the 20th or 21st march, and the autumnal equinox falls on 22nd or 23rd september every year.

The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd. The autumn equinox, or the september equinox, represents the time in the year when the position of the sun is directly above the equator.