First Day Of 2025 Spring

First Day Of 2025 Spring. It is also called the spring quinox. In the northern hemisphere, the astronomical start of spring, also known as the spring equinox, will occur on thursday, march 20, at 5:01 am edt in 2025.

How many days until spring 2025? 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.