Autumn Equinox 2024 Southern Hemisphere Calendar. In 2024, the autumnal equinox will take place on september 22,at 08:44 a.m. — the autumn equinox, which comes around every september for the northern hemisphere, marks the official astronomical start of fall.
— 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. In 2024, autumn equinox in australia (southern hemisphere) will occur on tue, march 20, at.