September 22, 2021: The sun’s light is most direct at the equator at 2:21 p.m. CDT, signaling the beginning of the autumn season in the northern hemisphere.
Autumnal equinox
When the Curves Line Up
Watching the Sun, Moon and Planets
September 22, 2021: The sun’s light is most direct at the equator at 2:21 p.m. CDT, signaling the beginning of the autumn season in the northern hemisphere.