![]() The term “mean” indicates the average time the clocks need to pass through the solar day. The name derives from the place where the solar time was standardised for everyone: it was established at The Royal Observatory Greenwich. The abbreviation of GMT stands for Greenwich Mean Time. Nevertheless, both of these time standards are widely used in the world for a similar purpose of time coordination. Although UTC and GMT indicate the same time, UTC is based on the more precise mechanism of time measurement. In particular, the concept of Coordinated Universal Time (UTC) was designed to provide a more accurate timekeeping system. The advancement of telecommunication technologies influenced the creation of an even more precise system of time identification. The primary difference remains to be the fact that GMT is the denomination of a timezone, while UTC is the title of the time standard. Therefore, the difference in time for other countries is indicated either by adding or subtracting hours from GMT time. The implementation of Greenwich Mean Time (GMT) was the first step to determine the time zone of other countries in regard to GMT+0. Especially, it was vital to have a standardised time zone for communication and military coordinations. Today, Greenwich Mean Time (GMT) is only the name of a time zone that is used by a few countries in Africa and Western Europe, including the UK during winter and all year in Iceland.With the globalisation and evolution of international relationships, the need for universal time identification has occurred. Since then, GMT is no longer a time standard. Until 1972, Greenwich Mean Time (also known as Zulu time) was the same as Universal Time (UT). UTC was adjusted several times until 1972, when leap seconds were introduced to keep UTC in line with the Earth's rotation, which is not entirely even, and less exact than atomic clocks. ![]() ![]() ![]() The name Coordinated Universal Time was officially adopted in 1967. In 1960, the International Radio Consultative Committee formalized the concept of UTC, and it was put into practice the year after. The transit circle is a part of the telescope's mechanics and it is still cited as the prime meridian's original reference (0° longitude). The reference line or starting point, the Prime Meridian, was determined to be the transit circle at the Royal Observatory in Greenwich, London. This is the basis for the 24-hour time zone system we know today.Īt the time, Greenwich Mean Time (GMT) was chosen as the world’s time standard. Universal Time (UT) was created at the International Meridian Conference in 1884. It is used to compare the pace provided by TAI with the actual length of a day on Earth. Universal Time (UT1): Also known as astronomical time or solar time, it refers to the Earth's rotation.International Atomic Time (TAI): A time scale that combines the output of some 400 highly precise atomic clocks worldwide, and provides the exact speed for our clocks to tick.Two components are used to determine UTC: The world's timing centers have agreed to keep their time scales closely synchronized - or coordinated - therefore the name Coordinated Universal Time. UTC is the time standard commonly used across the world. ©/stocknshares A Standard, Not a Time Zone The Greenwich Meridian in London, England. Business Date to Date (exclude holidays).
0 Comments
Leave a Reply. |