Spring Equinox 2024 Images. The spring equinox happens each year, between march 20 and march 21, or, in a leap year, between march 19 and march 21. This is when the sun is exactly perpendicular to earth's equator.

Equinoxes mark the moments when the sun rises due east and sets due west for most places on earth. This year, 2024, being a leap year (the number,.