Start Of Fall 2024 Date. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall. Here's everything you should know about the fall.

Autumn 2024 starts on sunday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the. Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the year in north.