Fall Equinox 2025 Dates And Times. Rajendra prakash gupt of jiwaji observatory noted that. 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.
The times of the solstices mark the beginning of summer and winter. September 22 at 8:43 a.m., eastern daylight time.