Fall Equinox 2024 Dates. If you want to be extra specific and put it on your calendar, then mark it for 5:44. The autumnal equinox in the northern hemisphere falls on sept.
Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst. Naval observatory’s astronomical information center.