How many equinoxes are there on planet Earth?  Can you name them?

 There are two equinoxes on planet Earth. One in March and one in September. We learned back in Trivia Challenge #1 that the word equinox means "equal night" in Latin. That translates to mean that on the days of equinox, there is exactly the same amount of daytime as there is nightime.

The name of the March equinox is "vernal" (meaning green or growing - as it is in springtime); and, the name for the September equinox is "autumnal" (as in autumn).

The vernal equinox falls on the first day of northern-hemisphere spring; and, the autumnal equinox falls on the first day of autumn.

 Trivia Challenge #2