1949年，中国设定北京时间为全国统一时区，取代了1912年划定的5个不同时区。

In China, the decision in 1949 to establish a single national time zone on Beijing time replaced the previous system of five time zones which had been established in 1912.

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例如，没有时区的时间戳在单一地区的情况下可以接受，但在多地区环境中却不能。

For example, a timestamp with no time zone is acceptable for a single locale but useless in a multi-locale environment.

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1868年的11月2日，零时区：新西兰正式在全国采纳标准时间。

November 2, 1868, time zone: New Zealand officially adopts a standard time to be observed nationally.

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