(New page: '''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 s...)
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.[1]