AUTUMNAL EQUINOX 2021
The September equinox occurs the moment the Sun crosses the celestial equator – the imaginary line in the sky above the Earth’s equator – from north to south. This happens either on September 22, 23, or 24 every year. This year it happens Wednesday, September 22, 2021, (1921 UTC) 3:21 P.M. EDT in the Northern Hemisphere. The