1st Day Of Spring 2025 Usa 2025. The first day of spring 2025 is tuesday, march 19. But what does it mean?
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. Here’s what to know about how we split up the year using the earth’s orbit.