The autumnal equinox occurs between which events?

In the Northern Hemisphere the autumnal equinox falls about September 22 or 23, as the Sun crosses the celestial equator going south.

Explanation:

In the Southern Hemisphere the equinox occurs on March 20 or 21, when the Sun moves north across the celestial equator.

brave new world, aldous huxley (1932)

answeramicable; (friendly);