The equinox happens when the sun's rays square up with Earth so the day is about as long as night. From then on, the days get shorter, darker, and colder. Here's why. The first day of fall, also ...

The cycle of the seasons is not symmetrical, and it does not at all mirror the progression of the solstices and equinoxes. The vernal equinox was Monday. The mean temperature (average of low and high) ...

Meteorological spring starts on March 1 every year, while astronomical spring begins on the spring equinox, typically around March 20. The vernal equinox marks the first day of astronomical spring and ...

The summer solstice, which is approaching this week, typically marks the “official” start of summer, although it’s felt like summer in Florida for weeks. Solstices and equinoxes mark the first day of ...

I thought it was spring already? Maybe it seemed like it between the unseasonably warm winter temperatures and Punxsutawney Phil's prediction of an early spring. But on March 19, the astronomical ...

You may have heard us talk about "meteorological seasons" that don't match up with the seasons you typically see on the calendar. While that may sound weird, there is a reason meteorologists use these ...

WASHINGTON — The winter solstice, the astronomical start of winter, is this weekend. For those north of the equator, the solstice on Sunday, Dec. 21, marks the shortest day and longest night of the ...

The vernal equinox heralds the arrival of spring in the Northern Hemisphere (finally). But have you heard the myth about balancing an egg on its end? Freelance writer Amanda C. Kooser covers gadgets ...

The first day of fall, also called the autumnal equinox, arrives on Sunday and brings a change of seasons. In this astronomical event, which happens every year, the Earth and sun line up just right so ...