The spring equinox always falls on March 20 or 21 (and occasionally on March 19 in a leap year). In 2025, the big day is Thursday, March 20.

The vernal equinox marks the start of spring in the Northern Hemisphere — so does that mean this is the only day out of the year when you’ll be able to balance an egg? Or not see your own shadow?

This story was updated to add new information. Spring has sprung, bringing warmer days and blooming flowers. Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere.

This year's first day of spring in the Northern Hemisphere occurs precisely at 5:01 a.m. EST on March 20, according to NASA. The date and time of the equinox varies slightly from year to year.

The first day of spring is Thursday. The spring equinox will occur at 5:01 a.m. EDT on Thursday. An equinox occurs when the Earth's equator aligns with the sun, resulting in a "nearly" equal ...

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

Spring equinox has begun, but what is it exactly? by: The Associated Press Posted: Mar 20, 2025 / 03:00 PM EDT Updated: Mar 20, 2025 / 03:00 PM EDT Spring is almost here — officially, at least.

This story was updated to add new information. Spring has sprung, bringing warmer days and blooming flowers. Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere.