Fall 2024 Meaning In Usa Calendar. Untied states 2024 calendar online and printable for year 2024 with holidays, observances and full moons While meteorologists like to call fall at the beginning of september, astronomical autumn starts later, on the autumnal equinox.

Pacific daylight time) autumn begins astronomically. In 2024, the first day of fall, also known as the autumnal equinox, is sunday, sept.