Fall Equinox 2024 Southern Hemisphere Map. The september equinox marks the beginning of fall in the northern hemisphere and the first day of spring in the southern hemisphere. It falls on december 21st or 22nd in the northern hemisphere and june 20th or 21st in the southern hemisphere.

Everything you need to know about the spring equinox 2024, including when it is, what it is and how it affects our planet. A nasa and noaa weather satellite captured this image of an autumnal equinox in 2019.