First Day Of Fall 2025 Usaid. The 2025 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. 22, at exactly 8:43 a.m.
Autumn 2025 starts on sunday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the. The 2025 autumnal equinox happens at 8:43 a.m.