What Is Fall Equinox 2024 Mean. Autumnal equinox marks the end of summer and the beginning of fall. The autumnal equinox is a celestial event that marks the beginning of fall.
This sunday, the autumnal equinox is upon us, and with it, a shift to shorter days, longer nights and the astronomical start of fall in the northern. The autumn equinox, also known as the fall equinox, is a celestial event that marks the transition from summer to autumn in the northern hemisphere.