Question

The equinox, when day and night are of equal length, occurs twice a year: about March 21, and again about September 21 or 22. The adjective is equinoctial. more on equality

Accepted Answer

etymologically, “equal night,” a combination of aequus and nox, noctis, night. Word Power Made Easy SESSION 21

知识	The equinox, when day and night are of equal length, occurs twice a year: about March 21, and again about September 21 or 22. The adjective is equinoctial.
拓展	etymologically, “equal night,” a combination of aequus and nox, noctis, night.
《》	more on equality
出处	Word Power Made Easy SESSION 21

Equinox Day Night Equal Length Occurs A Year March