Spring Equinox 2024 Ukraine. 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. Vernal / spring equinox 2024 the spring or vernal equinox marks the astronomical first day of spring.

And why isn’t the spring equinox always the march equinox? When do the four seasons start in 2024—for spring, summer, fall, and winter?