How Many Days Until Fall 2025 Starts. Adjust the subtraction to the number of days in each. 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.

You can also see on which day the holiday falls and how many days it is. Tetris will celebrate its 41st anniversary, and nasa will land the first female astronaut and the first african american male.