Equinox 2025 Vernal

Equinox 2025 Vernal. A solstice is the day when the sun is at its highest or lowest. During equinoxes, which happen twice a year,.

The start of astronomical spring, known as the vernal equinox, occurred yesterday, march 19, 2025, at 11:06 p.m. The vernal equinox — is an astronomical phenomenon when the sun, in its visible motion along the ecliptic, crosses the celestial equator.