Spring Equinox 2024 Date And Time Usa. In 2024, the official first day of spring is tuesday, march 19. On march 19, the vernal equinox will see spring come to the northern hemisphere as the sun reaches the spot where the ecliptic and celestial equator cross each other.

In the southern hemisphere, the spring equinox takes place on september 22,. The date of the “equilux” — when sunrise and sunset are closest to 12 hours.