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      an imaginary line drawn right around Earth’s middle, like a belt.


The equator divides Earth into the Northern Hemisphere and the Southern Hemisphere.



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Drawing of Earth with arrows shows how the sun’s rays fall on Earth at the equator during the winter solstice
On the first day of winter, which is usually around December 21, the sun’s rays shine directly on the equator.
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Page Last Updated: July 16th, 2014
Page Editor: NASA Education