Fall Equinox 2024 Usa Dates. At this specific time, earth's axis is tilted side. The autumnal equinox in the northern hemisphere falls on sunday, sept.

This sunday, the autumnal equinox is upon us, and with it, a shift to shorter days, longer nights and the astronomical start of. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.