Autumnal Equinox Day 2024 Map. Here's everything you should know about the fall equinox—plus our favorite fall facts, folklore,. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.

The autumnal equinox for this year occurs sunday, september 22, 2024,. In the northern hemisphere, the closest.