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  2. Historical time zones of China - Wikipedia

    en.wikipedia.org/wiki/Historical_time_zones_of_China

    The time zones of China refer to the time zone divisions used in China between 1918 and 1949. The first time zone plan was proposed by the Central Observatory (now Beijing Ancient Observatory) of the Beiyang government in Peking (Beijing) in 1918. The proposal divided the country into five time zones: Kunlun (UTC+05:30), Sinkiang-Tibet (UTC+06: ...

  3. Time in China - Wikipedia

    en.wikipedia.org/wiki/Time_in_China

    The time in China follows a single standard time offset of UTC+08:00, where Beijing is located, even though the country spans five geographical time zones. It is the largest sovereign nation in the world that officially observes only one time zone. The nationwide standardized time is named Beijing Time (BJT; 北京时间) domestically and China ...

  4. History of time in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_time_in_the...

    The evolution of United States standard time zone boundaries from 1919 to 2024 in five-year increments. Plaque in Chicago marking the creation of the four time zones of the continental US in 1883 Colorized 1913 time zone map of the United States, showing boundaries very different from today Map of U.S. time zones during between April 2, 2006, and March 11, 2007.

  5. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    This is a list of the UTC time offsets, showing the difference in hours and minutes from Coordinated Universal Time (UTC), from the westernmost (−12:00) to the easternmost (+14:00). It includes countries and regions that observe them during standard time or year-round. The main purpose of this page is to list the current standard time offsets ...

  6. History of New Mexico - Wikipedia

    en.wikipedia.org/wiki/History_of_New_Mexico

    The history of New Mexico is based on archaeological evidence, attesting to the varying cultures of humans occupying the area of New Mexico since approximately 9200 BCE, and written records. The earliest peoples had migrated from northern areas of North America after leaving Siberia via the Bering Land Bridge.

  7. International Date Line - Wikipedia

    en.wikipedia.org/wiki/International_Date_Line

    The International Date Line around the antimeridian (180° longitude). The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean, roughly following the 180.0° line of longitude and deviating to pass around some ...

  8. Timeline of New Mexico history - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_New_Mexico_history

    Timeline of New Mexico history. Coordinates: 34.4071°N 106.1126°W. This timeline is a chronology of significant events in the history of the US State of New Mexico and the historical area that is now occupied by the state. 2000s 1900s Statehood 1800s Territory 1700s 1600s 1500s Before 1492.

  9. Standard time - Wikipedia

    en.wikipedia.org/wiki/Standard_time

    Standard time is the synchronization of clocks within a geographical region to a single time standard, rather than a local mean time standard. Generally, standard time agrees with the local mean time at some meridian that passes through the region, often near the centre of the region. Historically, standard time was established during the 19th ...