First Day Of Fall 2024 Date And Time Usa. Before that it occurred in 1959 and 1921. Eastern time on sunday, sept.

The 2024 autumnal equinox will occur on sunday, september 22, at 8:44 am eastern time, marking the official transition from summer to fall in the northern hemisphere. According to the farmer’s almanac, the exact time of the autumnal equinox in the.