When Is The Autumnal Equinox 2024

When Is The Autumnal Equinox 2024. Autumnal equinox — is an astronomical phenomenon, when the sun in its visible motion along the ecliptic crosses the celestial equator. In the northern hemisphere, the autumnal equinox takes place on september 22, 2024, at 12:44 gmt (08:44 a.m.

Autumnal equinox, two moments in the year when the sun is exactly above the equator and day and night are of equal length; Equinoxes and solstices are two of the most important celestial events on earth.