First Day Of Fall 2024 Time. When do the four seasons start in 2024โfor spring, summer, fall, and winter? The autumnal equinox for the northern hemisphere and the first day of fall begin on the same day, at 8:44 a.m.
The first day of fall this year, also known as the autumnal equinox is sunday, sept. The national weather service reported that the fall season officially starts on the autumnal equinox, which in 2024 occurs on sept.