First Day Of Spring 2024 Countdown Clock

First Day Of Spring 2024 Countdown Clock. A breakdown of the countdown. 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.

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. The 2024 winter solstice, the shortest day of the year, happens on saturday, dec.