Autumn Equinox Southern Hemisphere 2024 Date. The autumnal equinox occurs in september each year, and in the northern hemisphere the date marks the end of summer and beginning of autumn. Eastern daylight time (5:44 a.m.

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 hemisphere. It also lists astronomical sunrise and sunset timings on autumnal equinox.