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In 1960, the U.S. Naval Observatory, the Royal Greenwich Observatory, and the UK National Physical Laboratory coordinated their radio broadcasts so that time steps and frequency changes were coordinated, and the resulting time scale was informally referred to as "Coordinated Universal Time".
This time zone is the basis of Coordinated Universal Time (UTC) and all other time zones are based on it. In ISO 8601, an example of the associated time would be written as 2069-01-01T12:12:34+00:00. It is also known by the following geographical or historical names: Greenwich Mean Time [1] Western European Time [1] Azores Summer Time [1]
Universal Time (UT or UT1) is a time standard based on Earth's rotation. [1] While originally it was mean solar time at 0° longitude, precise measurements of the Sun are difficult. Therefore, UT1 is computed from a measure of the Earth's angle with respect to the International Celestial Reference Frame (ICRF), called the Earth Rotation Angle ...
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.
In 1960, the International Radio Consultative Committee formalized the concept of Coordinated Universal Time (UTC), which became the new international civil time standard. UTC is, within about 1 second, mean solar time at 0°. [6] UTC does not observe daylight saving time.
Civil rights attorney Ben Crump announced he has filed a $100 million lawsuit against multiple government and law enforcement agencies for an alleged conspiracy that led to the 1965 assassination ...
Julie. An icon of the 1960s and onward, actor and singer Julie Andrews reps the 18th most popular girl's name of the decade. Perhaps because of her star roles in movies such as Mary Poppins (1964 ...
On the occasion of a leap second, such as at 23:59:60 on December 31, 2005, there is an extra second pause between the second and third beeps, to keep the speaking clock synchronised with Coordinated Universal Time: "At the third stroke, the time from BT will be, twelve o'clock precisely. Beep, Beep, <pause> Beep."