The summer solstice is almost here ... hours for the sun's zenith to get back to the equator and kick off the September equinox, followed by 89 days and 19 hours to complete the cycle with ...

September’s full moon will be the last one of the summer. Here are the details ... first full moon occurring nearest to the autumnal equinox, according to the Old Farmer’s Almanac.

Spring is arriving in the Northern Hemisphere with the vernal equinox. But have you heard the myth about balancing an egg on its end?

As the spring equinox approaches, northern lights hunters will scour the skies for breathtaking displays of color.

For the southern hemisphere, it signifies the opposite: shortening days and the dawning of summer. To illustrate ... the equator at the exact time of an equinox, your shadow would be at its ...

The start of spring is on Thursday, March 20, when the vernal equinox marks ... seasons of spring, summer, fall, and winter begin on the first of March, June, September, and December, respectively.