Fall Equinox 2024 Meaning. Most people on earth will experience around 12 hours of day and 12 hours of night during september’s. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.

Discover all the essential details about the fall equinox—its significance, meaning, and the reasons we celebrate this remarkable event. The fall equinox is an important way to mark earth’s annual journey around the sun.