Definitions

1. noun

Either of the two dates in the year when day and night are approximately equal in length, occurring around March 20/21 and September 22/23.

“The farmers planned their harvests around the equinox to ensure the most favorable growing conditions.”

2. noun

A day or period of balance or equilibrium in any sphere of activity.

“The company reached an equinox in its sales, with both domestic and international revenue being equal.”