Phronesis
No. 025Factsince 1949Countries ·Geography ·Society

China spans five time zones but uses one

All of China runs on Beijing time. In the far west, the sun can rise after 10 a.m. in winter, so many people unofficially keep their own clock.

2 min read

China is about as wide as the continental United States, which uses four main time zones. China uses one: Beijing Time, UTC+8.

Five zones, then one

The Republic of China defined five time zones, from Kunlun (UTC+5:30) in the far west to Changpai (UTC+8:30) in the northeast. After the founding of the People’s Republic in 1949, the whole country moved to Beijing Time: a statement of national unity, written into the clock.

Life in the far west

In Xinjiang, more than 3,000 km west of Beijing, the result is strange. In winter, in westernmost Akto County, the sun rises at about 10:16 a.m. by the official clock.

So people adapt. Many in Xinjiang, especially Uyghurs, use an unofficial Xinjiang Time, two hours behind Beijing. Shops and offices often open from 10:00 to 19:00 Beijing Time, which is 8 to 5 local time. When arranging to meet, people often ask: “Beijing time or Xinjiang time?”

Why it’s interesting

Time zones feel like geography, but they are political choices. France spreads across twelve; Kiribati moved the date line; China, nearly as wide as the US, chose one, and the sun keeps its own schedule regardless.

Bring it up

“China is as wide as the continental US but uses a single time zone. In the far west the winter sun rises after ten in the morning.”

Follow the thread

  1. In contrastFrance has more time zones than any other country France has the most time zones; China, nearly as wide as the US, has just one.
  2. Same patternKiribati moved the International Date Line Time zones are political decisions, not natural facts.
  3. RelatedThree meals a day is a fairly modern habit Clocks and daily routines adjust to each other, officially or not.
  4. RelatedWhy Ramadan moves about 11 days earlier every year Calendars and clocks are human agreements laid over astronomy.

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