+The Tropic of Cancer is the northernmost line of [latitude](/wiki/latitude) on Earth where the Sun's rays can be directly overhead. This celestial event occurs annually at the June [solstice](/wiki/solstice), marking the start of summer in the Northern Hemisphere and its longest daylight hours.
+## See also
+- [Tropic Of Capricorn](/wiki/tropic_of_capricorn)
+- [Equator](/wiki/equator)
+- [Arctic Circle](/wiki/arctic_circle)
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