You're reading: The Economist: Changing the clocks is unpopular. Why do it?

Sometimes the decision to change a country’s time zone can be political. Despite its vastness, all of China runs on Beijing time—a decision taken by Mao Zedong in 1949 to instil unity. (Pity the poor people of Xinjiang province in China’s far west, where sometimes the sun does not rise until 10am.)

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