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  2. 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 ...

  3. UTC−12:00 - Wikipedia

    en.wikipedia.org/wiki/UTC%E2%88%9212:00

    Central meridian. 180 degrees. Date-time group. Y. UTC−12:00: blue (December), orange (June), yellow (year-round), light blue (sea areas) UTC−12:00 is an identifier for a time offset from UTC of −12:00. It is the last to enter a New Year, and is sometimes referred to as the International Date Line West (IDLW) time zone. [ 1 ]

  4. UTC+14:00 - Wikipedia

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

    It is also referred to as the "latest time zone" on Earth, as clocks in it always show the 'latest' (i.e., most advanced) time of all time zones. UTC+14:00 stretches as far as 30° east of the 180° longitude line and creates a large fold in the International Date Line around the Pacific nation of Kiribati.

  5. 180th meridian - Wikipedia

    en.wikipedia.org/wiki/180th_meridian

    The 180th meridian on a map of Earth. The International Date Line zigzags around the 180th Meridian. The 180th meridian or antimeridian[1] is the meridian 180° both east and west of the prime meridian in a geographical coordinate system. The longitude at this line can be given as either east or west. On Earth, the prime and 180th meridians ...

  6. Military time zone - Wikipedia

    en.wikipedia.org/wiki/Military_time_zone

    The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone. The military time zone system ensures clear ...

  7. Time zone - Wikipedia

    en.wikipedia.org/wiki/Time_zone

    A time zone is an area which observes a uniform standard time for ... International Date Line – Imaginary line that demarcates the change of one calendar day to ...

  8. Prime meridian - Wikipedia

    en.wikipedia.org/wiki/Prime_meridian

    Prime meridian. A prime meridian is an arbitrarily chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle. This great circle divides a spheroid, like Earth, into two hemispheres ...

  9. Time in Kiribati - Wikipedia

    en.wikipedia.org/wiki/Time_in_Kiribati

    When the Republic of Kiribati was founded in 1979, it had three time zones: UTC+12:00 in the Gilbert Islands, UTC−11:00 in the Phoenix Islands and UTC−10:00 in the Line Islands. Gilbert was west of the international dateline and the Phoenix and Line Islands were east of it. This meant that the Gilbert Islands were nearly a full day ahead of ...