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3 days ago · The World's Columbian Exposition, also known as the Chicago World's Fair, was a world's fair held in Chicago from May 5 to October 31, 1893, to celebrate the 400th anniversary of Christopher Columbus 's arrival in the New World in 1492. [1] The centerpiece of the Fair, held in Jackson Park, was a large water pool representing the ...
Jun 11, 2024 · Since Jan. 1, 1972, the UTC frequency has been the TAI frequency, the difference between TAI and UTC has been kept at some integral number of seconds, and the difference between UT1 and UTC has been kept within 0.9 second by inserting a leap second into UTC as needed.
1 day ago · 日本標準時 （にほんひょうじゅんじ、 英: Japan Standard Time 、 略語 ： JST ）は、 総務省 所管の 国立研究開発法人情報通信研究機構（ NICT ） の 原子時計 で生成・供給される 協定世界時 （UTC）を9 時間 （ 東経135度 分の時差）進めた 時刻 （すなわち UTC+9 ）をもって、 日本 において 標準時 （ STDT ）としたものである [1] [2] [3] 。 同機構が決定するUTCは「UTC（NICT）」と称され、 [4] 、 国際度量衡局 が決定する協定世界時（UTC）との差が±10 ナノ秒 以内であることを目標として調整・管理されている [5] 。 単に 日本時間 と呼ばれることもある。
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Jun 6, 2024 · UTC, or Coordinated Universal Time, is the primary time standard by which the world regulates clocks and time. It is not a time zone, but a time standard that is the basis for civil time today. UTC is maintained within 0.9 seconds of Universal Time (UT1), which is determined by Earth’s rotation.
4 days ago · Overview. The ESO Very Large Telescope consists of an array of four 8-meter telescopes which can work independently or in combined mode. In this latter mode the VLT provides the total light collecting power of a 16 meter single telescope.
3 days ago · Universal Time (UT1) is a time standard that is determined by counting the time it takes the Earth to rotate once per day. It divides the time scale based on the change in the angle of the Earth relative to the mean Sun. Universal Time plays an important role in the fields of navigation and astronomy, as well as astro-geodesy.
