Autumn Begins 2024 Date. The first day of fall is sunday, september 22, 2024—the same day as the autumn equinox—in the northern hemisphere. Edt, and the season will last for approximately 89 days and 20 hours , to december 21.

Here are the equinox and solstice dates—plus, answers to common questions about the seasons of. According to the meteorological calendar, the first autumn day is friday.