When Is The Fall Equinox 2025
When Is The Fall Equinox 2025. The autumn or fall equinox signals the end of summer on the astronomical calendar. Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the.
September 22, 2030 the autumnal equinox signals the official. Fall starts at the moment when the sun is directly over the equator, going from north to south: