2024 Fall Equinox. The september equinox marks the beginning of fall in the northern hemisphere and the first day of spring in the southern hemisphere. The autumn or fall equinox signals the end of summer on the astronomical calendar.
Singer billie joe armstrong of the band green day performs on abc’s good morning america at rumsey playfield/summerstage, july 26, 2024, in new york. All around the world, the fall equinox has weaved its way into our cultures and traditions.