Autumn 2024 Months And. In 2024, these are the astronomical dates and times for the start of each season: 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.

When is the autumnal equinox in 2024? Starts on tuesday, march 19 at 11:06 pm, and ends on june 20 at 4:51 pm.