Fall 2024 Meaning In Usa. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall. The autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon.
The fall equinox is not on the same day each year, though it always falls. What are fall colors?:how changing leaves give off spectacular autumn palettes