1st Day Of Fall 2025 Usa. This year the autumn will start on sunday september 22, 2024 (day of the fall equinox) and will end on saturday december 21, 2024 with the winter solstice. The first day of autumn often called fall (september equinox or autumnal equinox) is when the sun shines directly on the celestial equator passing from north to south and the length of day and night are almost the.
Online calendar of holidays and days off in united states for the autumn of 2025. The first day of autumn is in 2025 on september 22 (according to the astronomical definition).