When is the spring equinox 2024? The spring equinox officially starts at 8:06 p.m. Arizona time on Tuesday, March 19. Need a break? Play the USA TODAY Daily Crossword Puzzle.

A tabebuia tree stands out against the blue sky ahead of the spring equinox on Friday, March 19, 2021, at Jensen Beach Causeway Park. These yellow trees have been in bloom around Martin County ...

Together, "equinox" means "equal night," which is precisely what the spring equinox is. In all areas throughout the world, both the length of daytime and nighttime are exactly 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.

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 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.

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.

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. This year, the equinox occurs on Tuesday, March 19 at 10:06 p.m.