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  2. 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.

  3. Military time zone - Wikipedia

    en.wikipedia.org/wiki/Military_time_zone

    The military time zone system ensures clear communication in a concise manner, and avoids confusion when coordinating across time zones. As the ACP 121 standard, [1] the military time zone system is used by the armed forces for Australia, Canada, New Zealand, the United Kingdom, the United States, and many nations in NATO .

  4. Chamorro Time Zone - Wikipedia

    en.wikipedia.org/wiki/Chamorro_Time_Zone

    Chamorro Time Zone. UTC+10 highlighted on a world map. The Chamorro Time Zone, [1] formerly the Guam Time Zone, is a United States time zone which observes standard time ten hours ahead of Coordinated Universal Time ( UTC+10:00 ). The clock time in this zone is based on the mean solar time of the 150th meridian east of the Greenwich Observatory .

  5. Time in the Republic of Ireland - Wikipedia

    en.wikipedia.org/wiki/Time_in_the_Republic_of...

    Ireland uses Irish Standard Time ( IST, UTC+01:00; Irish: Am Caighdeánach Éireannach) in the summer months and Greenwich Mean Time ( UTC+00:00; Irish: Meán-Am Greenwich) in the winter period. [1] Roughly two-thirds of the Republic is located west of the 7.5°W meridian. Thus the local mean time in most of Ireland is closer to UTC-01:00 time ...

  6. Time in Jordan - Wikipedia

    en.wikipedia.org/wiki/Time_in_Jordan

    Time in Jordan. Time in Jordan is on Arabia Standard Time (AST) ( UTC+03:00 ). Before daylight saving time (DST) was abolished in October 2022, Jordan used EST ( UTC+02:00) with an offset of one hour ( UTC+03:00) during the summer months. Daylight saving time typically started on Friday during 26 February to 1 April and ended on the last Friday ...

  7. UTC+08:00 - Wikipedia

    en.wikipedia.org/wiki/UTC+08:00

    UTC+08:00 is an identifier for a time offset from UTC of +08:00. With an estimated population of 1.708 billion living within the time zone, roughly 21% of the world population, it is the most populous time zone in the world, as well as a possible candidate for ASEAN Common Time . This time zone is used in all predominantly Chinese-speaking ...

  8. UTC+14:00 - Wikipedia

    en.wikipedia.org/wiki/UTC+14:00

    150 degrees W. Date-time group. UTC+14:00 is an identifier for a time offset from UTC of +14:00. This is the earliest time zone on Earth, meaning that areas in this zone are the first to see a new day, and therefore the first to celebrate a New Year. It is also referred to as the "latest time zone" on Earth, as clocks in it always show the ...

  9. Railway time - Wikipedia

    en.wikipedia.org/wiki/Railway_time

    Railway time. Clock on The Exchange, Bristol, showing two minute hands, one for London time ( GMT) and one for Bristol time (GMT minus 11 minutes). Railway time was the standardised time arrangement first applied by the Great Western Railway in England in November 1840, the first recorded occasion when different local mean times were ...