As the vernal equinox ... light displays. The equinox effect gives skywatchers an excellent opportunity to see the northern lights in their full splendor. The Last Quarter Moon: Clear Skies ...

measures how far east an object is of the point where the sun intersects the celestial equator on the vernal equinox. During the close approach and conjunction of the moon and Mars, the pair will ...

April’s full moon also has a religious moniker, the paschal moon. This refers to its connection with the vernal equinox — the official first day of spring — and the Easter holiday.