Fall Equinox 2025 Dates Usa. The occurrence of spring equinox usually falls on the 20th or 21st march, and the autumnal equinox falls on 22nd or 23rd september every year. Use this opportunity to refresh the level of grace and harmony in your life.
It also lists astronomical sunrise and sunset timings on autumnal equinox day. 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.