Autumnal And Vernal Equinoxes 2024 Pdf. 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. Our long, hot summer finally comes to an end on sunday at 8:48 a.m.

Edt with the autumnal equinox. 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.