First Day Of Fall 2025 Usa. Main 2025 holidays and celebrations. January 1, 2025 new years day january 6, 2025 new student orientation january 7,.

Autumn 2025 starts on monday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth’s axis. United states 2025 holiday calendar with all major holidays and observances.