Autumn 2024 Date. Autumn / fall equinox 2024 the autumn or fall equinox signals the end of summer on the astronomical calendar. On that day, the autumnal equinox will occur, marking the beginning of fall.

Here’s everything you should know about the fall equinox—plus our favorite fall facts, folklore,. 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.