Fall 2024 Start Date And Time. The official start of autumn in northern hemisphere will soon be here with the arrival of the autumnal equinox. Autumnal equinox marks the end of summer and the beginning of fall.
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. More information is available from the office of the executive vice president.