V2 Vocabulary Building Dictionary
Definition: a day in which the sun passes the plane of the equator, making night and day exactly equal in length
Synonyms: vernal equinox, autumnal equinox
Tips: The two equinoxes each year are March 21 and September 23. These dates also mark the end of winter/beginning of spring and end of summer/beginning of fall.
There is a myth that an egg can balance on its end only during an equinox, when time is also balanced between day and night. (day when sun crosses equator)
Sally chose the vernal equinox as the first day of her spring cleaning. (day when sun crosses equator)
The autumnal equinox signifies the beginning of fall, when the sun falls below the equator. (when day and night are equal in length)
After the vernal equinox, the days begin to shorten in length. (cross of equator by sun)
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