Autumn Equinox 2025. For a complete listing of the dates of the winter and summer solstices and spring and fall equinoxes through 2025, check out this site from the u.s. Autumnal equinox is the moment in which the sun enters libra.
It’s bringing summer to the southern hemisphere and winter to the northern hemisphere. The sun will shine directly on the equator and there will be nearly equal amounts of day and night throughout the world.