When Is The First Day Of Fall 2024 Usa 2024.  — autumn 2024 starts on sunday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the. Labor day, often called the unofficial end to summer, has ushered a new season.

The first day of fall in the northern hemisphere is sunday, sept. Based on the astronomical method of determining the seasons, autumnal equinox marks the beginning of fall.