Did you know both the astronomical first day of spring and Easter Sunday are tied to the spring equinox? How they relate, ...

Its fall – or autumnal — equinox can land between Sept. 21 and 24. The solstices mark the times during the year when the Earth is at its most extreme tilt toward or away from the sun.

Its fall – or autumnal — equinox can land between Sept. 21 and 24. The solstices mark the times during the year when the Earth is at its most extreme tilt toward or away from the sun.

Spring Equinox is rapidly approaching. When is the first day of spring? What we know about when spring starts, winter ends, summer solstice and more.

Though equinoxes might not get the same attention as solstices, they're a lovely way to observe the seasons shifting. Let's get to know the vernal equinox, what it is and why it happens.

Ready for the first day of spring? What we know about the 2025 spring equinox, the autumnal equinox, summer and winter solstices and more.

The shift is called the vernal equinox, halfway between the winter and summer solstices when the Earth tilts one hemisphere the farthest from the sun. Here's what to know about spring. There are ...

equinox can fall between March 19 and 21 while the fall equinox hits sometime between September 21 and 24. What’s a solstice, then? Solstices mark the extreme points in Earth’s tilt.

The equinoxes occur when the sun is right above the equator, making day and night equally long. The solstices occur on the longest and shortest day of the year, respectively. In the Northern ...