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Tropic of Capricorn
line of southernmost latitude at which the Sun can be directly overhead / From Wikipedia, the free encyclopedia
The Tropic of Capricorn, or Southern tropic, is one of the five major circles of latitude of a map of the Earth. It is 23° 26′ 22″ south of the Equator.
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It marks the most southerly latitude at which the sun can appear directly overhead. This happens at the December solstice, when the southern hemisphere is tilted towards the sun to its maximum extent.