1st Day Of Spring 2026. The first day of spring, also known as the vernal equinox, is a momentous occasion that heralds the arrival of a season marked by blooming flowers, longer days, and a sense of renewal. The first day of spring, also known as the vernal equinox, falls around march 20th or 21st each year in the northern hemisphere.

Online calendar of holidays and days off in united states for the spring of 2026. The march or vernal equinox is when the sun crosses the celestial equator, moving from south to north.