First Day Of Fall 2025 Time. First day of fall in 2025 is on sunday, the 22nd of september (22/9/2025). In 2025, the autumnal equinox falls on september 22nd, marking the official start of fall in the northern hemisphere.
This transition brings a delightful change in weather, creating. Est sunday, march 10, for spring forward and will end, or fall back, at 2 a.m.