Autumnal Equinox September 2024 Calendar. The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd. It is also called the autumnal equinox, fall equinox or the.
The autumnal equinox in september ushers in a change of season. If you want to be extra specific and put it on your calendar, then mark it for.