Autumn Equinox 2024 Time Usa. The first day of fall in 2024 arrives with the fall equinox on sunday, september 22, 2024, at 8:44 a.m. Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator,.
The fall equinox will occur at exactly 8:44 a.m. Autumnal equinox โ is an astronomical phenomenon, when the sun in its visible motion along the ecliptic crosses the celestial equator.
