When Is The First Day Of Fall 2024 Usa. So when exactly does fall start? The first day of fall is sunday, september 22, 2024—the same day as the autumn equinox—in the northern hemisphere.
The first day of fall in 2024 arrives with the fall equinox on sunday, september 22, 2024, at 8:44 a.m. Edt) in the northern hemisphere.
