Fall 2024 Start Date In Usa. The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd. I f you are in the eastern time zone, then fall officially begins at 8:43 a.m., local time.

When do the four seasons start in 2024—for spring, summer, fall, and winter? Autumnal equinox marks the end of summer and the beginning of fall.