1st Day Of Spring 2024 Usa Calendar. Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m. For those of us in the northern hemisphere, this was marked by the.

Spring in the northern hemisphere begins on march 20, 2025, at 09:02 gmt (05:02 a.m. 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.