Equinox: nm (word coming from the Latin æquinoctium, from æquus “equal” and nox, noctis “night”).
The equinox is the period of the year when, the sun passing through the equator, the day has a duration equal to that of the night, from one polar circle to another.
Vernal Equinox, Vernal Equinox (March 21).
Autumn Equinox (September 23).
Equinoxes and Solstices.
Precession of the equinoxes.
Equinox tides, the highest of the year....
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