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Time really has no meaning on the North or South poles. But why? DigiPub/Getty Images
Time zones are headache fuel. Rapidly moving between them is a good way to screw up your sleep schedule; ask anyone who's traveled overseas on business.
They've also got political quirks here and there. The continental United States is split into four recognized time zones. Yet China — which is around the same size — has just one. Still, that's not to say the layout of Earth's time zones is totally random.
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By international custom, our planet is divided into a series of longitudinal lines that run from the North Pole ("