First Day Of Spring 2025 Usa Calendar. Here are the equinox and solstice dates—plus, answers to common questions about the seasons of. There are four seasons in a year:

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. 46 rows 2025 holidays.