Equinox = the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20).
Translating: Happy Equinox
Spanish: Feliz Equinoccio
All you need to know about the March equinox, coming up this week: https://t.co/Q0Sp3nL3l8
— EarthSky (@earthskyscience) March 18, 2018