An equinox occurs twice throughout the course of a year, when earth’s axis points neither toward nor away from the sun. how does an equinox affect the lengths of day and night? a] day and night are equal in length. b] day is longer than night. c] night is longer than day. d]the sun will not set, resulting in a 24-hour day. e] the sun will not rise, resulting in a 24-hour night.