Autumn Equinox 2024 Australia Map. On these days, everywhere on earth experiences roughly 12 hours of sunshine and 12 hours of darkness. This is the first day of astronomical summer and.

 — in the northern hemisphere, the closest autumnal equinox will take place on september 22, 2024, at 12:44 gmt (08:44 a.m. Cdt) and will last until the winter solstice on saturday,.