When Is Fall 2024 Start And End. Twice a year, around march 20 or 21 and sept. When is the first day of fall 2024?
Astronomical fall, on the other hand, ends at the winter solstice, which this year happens on. Autumn 2024 starts on sunday, 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.