Equinox

/ˈɛkwɪnˌɒks/

/ˈikwəˌnɑks/

Equinox

(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic

either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length

Examples

1. Robbie opened his heart after a secret charity gig at London's Equinox club on Thursday.

2. Equinox, Barry's SLT, and SoulCycle, which comes out to about $500.

3. The equinoxes: the day when there’s equal day and night.

4. The spring equinox happens around March 21.