The spring equinox, also known as the vernal equinox, marks the official start of the season, which happens on Thursday, March 20, 2025.

Spring 2025 technically begins at 5:01 a.m. Eastern time that day as the sun moves directly over the Earth’s equator — the central line between the North Pole and the South Pole — bringing almost equal minutes of daylight and darkness all around the globe.

After the vernal equinox in March, the Northern Hemisphere tilts toward the sun until the June solstice, when the sun begins to migrate back south. At precisely 5:01 a.m. ET on Thursday, the sun's rays fall directly on the equator,

It’s far too early to try to fry an egg on the sidewalk, but according to weather lore, the spring equinox is an ideal time to try to balance an egg!