Autumn 2024 Date And Time. In 2024 the autumnal equinox will occur on 22 september at 12.44pm gmt (1.44pm bst). This year the autumn will start on sunday september 22, 2024 (day of the fall equinox) and will end on saturday december 21, 2024 with the winter solstice.

The official first day of fall is officially sunday, september 22, 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.