Start Of Autumn 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. See see our 2024 fall foliage color map to get an idea of when fall leaves change their color.

In 2024, the exact time of the start of fall is at 12:44 uct (coordinated universal time). Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m.