When Is 1st Day Of Fall 2024. 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. The season change dates are based on the spring and fall equinoxes as well as the summer and winter solstices.
This marks the official shift from summer to autumn, bringing cooler weather, changing leaves, and. When local time reaches 2 a.m.,.