First Day Of Spring 2024 March 21

First Day Of Spring 2024 March 21. Although the vernal equinox is often referred to as the “first day of spring,” there are different ways to define the season. In 2024, the vernal equinox occurred on march 19, signaling the start of spring in the northern hemisphere (and fall in the southern hemisphere).

First day of spring 2024. First, there are the astronomical seasons that generally are the main indicator of the seasons and the first day of spring is march 21.