Spring Solstice 2024. But on march 19, the astronomical winter ends and spring begins. A solstice is the day when the sun is at its highest or lowest.

Dates and times of equinoxes and solstices can be found in tables that list these events in coordinated. Spring equinox 2024 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic.