'''Equinox''' is the time when the [[sun]] crosses the [[earth]]'s [[equator]], making night and day of approximately equal length all over the earth. Equinox occurs about March 21 (the spring or vernal equinox) and September 22 (autumnal equinox) each year.<ref>http://www.weather.gov/glossary/index.php?letter=e</ref> | '''Equinox''' is the time when the [[sun]] crosses the [[earth]]'s [[equator]], making night and day of approximately equal length all over the earth. Equinox occurs about March 21 (the spring or vernal equinox) and September 22 (autumnal equinox) each year.<ref>http://www.weather.gov/glossary/index.php?letter=e</ref> |