Spring Equinox 2024 Southern Hemisphere Time. 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. Visualize the current position of the sun relative to the seasons with the astro clock, a.

Learn about the autumnal equinox, when day and night are almost equal in length, and how it marks the start of astronomical autumn in the northern hemisphere. The next equinox occurs on march 19, 2024, at 11:06 p.m.