One of those revisions includes the adaptation of leap seconds which was formulated for feasible future measurements and calculations based on time. Several modifications have been done in the Coordinated Universal Time (UTC) ever since its establishment. The decision of whether to replace the Coordinated Universal Time or not is yet to be decided. This means that the Coordinated Universal Time or the Universal Time Coordinated was called Greenwich Mean Time before 1972. The Coordinated Universal Time (UTC) is one of the heirs of Greenwich Mean Time ( GMT). It is the primary source of measuring time by which several countries rectify time and clocks. UTC, which is also known as the Coordinated Universal Time, is a time zone that is followed by the entire world. Comparison Table Between UTC and PDT Parameters Of Comparison UTC PDT Full form Coordinated Universal Time Pacific Time Zone Time Difference seven hours ahead seven hours behind Effective since 1 January 1960 2007 Unit/formula used to measure atomic seconds UTC-7 hours or PDT+ 7 hours Followed by countries/places Entire world Western USA,Western Mexico,Western Canada What is UTC? In Canada and the USA, Pacific Time Zone is also known as the Pacific Standard Time (PST) while observing time from early November to mid-March and is known as the Pacific Daylight Time (PDT) during mid-March to early November. In order to observe standard time, these places minus eight hours from Coordinated Universal Time. Places such as Western United States, Western Canada, Western Mexico follow the Pacific Time Zone. PDT or The Pacific Time Zone is the time zone that is seven hours behind the Universal Time Zone. The CCIR, too, recommended several suggestions for the improvements of this time system. In one of its revisions, for feasible future time measurements, leap seconds were introduced. ![]() Several modifications were done ever since its inception. It will be the 137 th Airbus Defence and Space satellite to be launched by Arianespace.The UTC or the Coordinated Universal Time was the first-ever time system/zone put forth to the world on 1 January 1960. ![]()
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