Tropic of Cancer

Line of northernmost latitude at which the Sun can be directly overhead

The Tropic of Cancer is the Earth's northernmost circle of latitude where the Sun can be seen directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted toward the Sun to its maximum extent. Similarly, at the latitude of the Tropic of Cancer, at solar midnight on the December solstice, the Sun will be 90 degrees below the horizon in all directions.

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