Ali Melisse

1st Day Of Spring 2024 Pics. Edt on tuesday, march 19. The vernal equinox marks the start of the spring season for the northern hemisphere.

Here is a basic explanation of how astronomers and meteorologists. The first day of spring (march equinox or vernal equinox) is when the sun shines directly on the celestial equator passing from south to north and the length of day and night.