What Day Is The Spring Solstice 2024. The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere. What is the spring equinox and what happens on this day?
The astronomical start to summer varies each year depending on. 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.