It may still be sweltering in Florida, but the official first day of fall is right around the corner! The autumnal equinox falls in September every year and marks the official start of the fall ...

With the start of fall just over a month away ... that's called the summer solstice. This marks the first day of summer in the North and the first day of winter in the South.

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

As a result, both day and night are 12 hours long around the globe. The vernal, or spring, equinox was the first of two for the year: 2025's autumnal, or fall, equinox will occur on Monday ...

The first day of spring is marked by the vernal ... which mark the longest and shortest days of the year. The spring and autumn equinoxes are the halfway point between the solstices.