When'S The First Day Of Spring 2024. In 2024, the march equinox will occur on tuesday, march 19, at 11:06 p.m. This is also the start of the vernal equinox.

The spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere. In the northern hemisphere, the first day of spring will be on march 19, 2024.