When Does Fall Start 2025. Fall starts at the moment when the sun is directly over the equator, going from north to south: Find out the date when autumn (or fall) is in 2025 and count down the days until autumn (or fall) with a countdown timer.
On this day, clocks will move forward by one hour at 2:00 a.m., making it 3:00 a.m. Fall begins on september 22 or 23 and ends on december 21 or 22.