Spring Equinox 2024 Season. The spring equinox (march 19, 2024) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment of equal night across the world. Learn when spring equinox is in the calendar below.

The spring equinox occurs when the sun passes directly over the equator going from south to north, bringing nearly equal amounts of day and night to both hemispheres. In 2024, the march equinox happens on march 19 at 11:06 p.m.