What Was The First Day Of Fall In 2025. The first day of fall typically occurs on september 22nd, 23rd, or 24th in the northern hemisphere. The following table shows the dates together with the exact time in which each of the seasons of the year begin.
The data correspond to the seasons of the year 2025. On the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the northern hemisphere to the southern.
