Last Day Of Fall 2025 Dates Usa

Last Day Of Fall 2025 Dates Usa. In 2025, the first day of fall, also known as the autumnal equinox, is sunday, sept. Saturday, dec 21 4:20 am est.

Saturday, dec 21 4:20 am est. In 2025, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.