When Is The 1st Day Of Spring 2024. When is the first day of spring 2024? Hence, march equinox is known as spring equinox in the northern hemisphere.

The first day of spring 2024: 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 are almost the same.