First Day Of Spring 2024. On the equinoxes, the earth’s axis and orbit line up so both hemispheres get the same amount of sunlight. This year it starts on march 19 2024, at 11:06 p.m.
In 2024, the march equinox will occur on tuesday, march 19, at 11:06 p.m. The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere.