Autumn Equinox Southern Hemisphere 2024 Calendar. — the autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon. — autumn 2024 starts on sunday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the.
— december 21, 2024 at 1:20 am pst. — the equinox of september that’s what we call autumn equinox because it marks the beginning of this season for us who live in the northern hemisphere.