What Is Fall Of 2025 Called. Autumn 2025 starts on monday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth's axis. In 2025, the autumnal (fall) equinox arrives on monday, september 22, marking the official first day of fall.
Here are the equinox and solstice dates—plus, answers to common questions about the seasons of. Autumn 2025 starts on monday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth’s axis.