The first day of spring, also known as the spring equinox or vernal equinox, in 2025 is on March 20. Specifically, in the Northern Hemisphere, astronomical spring begins at 5:01 a.m. Eastern Daylight Time on March 20, 2025. This marks the point when day and night are approximately equal in length as the sun shines directly on the Earth's equator. After this day, daylight hours begin to exceed nighttime hours, signaling the start of spring. Astronomical spring ends around June 20 or 21, which is the summer solstice.
In the meteorological calendar, spring is defined as starting on March 1 and lasting through May 31, but the widely recognized start linked to the equinox is March 20.
