When Is The Autumn Equinox 2025. โ in the southern hemisphere, the autumnal equinox takes place on march 20, 2025, at 03:07 gmt (march 19, 11:07 p.m. 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,.
With it come pumpkin spice lattes and harvest. โ autumnal equinox, two moments in the year when the sun is exactly above the equator and day and night are of equal length;