Coordinated Universal Time is "[t]he official timekeeping system of the world's nations since 1972."
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| - Coordinated Universal Time
- Coordinated Universal Time
- Coordinated Universal Time
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| - Coordinated Universal Time is "[t]he official timekeeping system of the world's nations since 1972."
- Для уменьшения большого объема двойного дублирования темы - ссылка на англорусскую Википедию:
* english: Coordinated Universal Time
* русский: Всемирное координированное время
- Coordinated Universal Time (UTC or CUT) is primary time standard around the world. It is the same as Greenwich Standard Time.
- UTC, or Coordinated Universal Time, is a time zone measure.
- Coordinated Universal Time or UTC is an atomic realization of Universal Time (UT) or Greenwich Mean Time (GMT), the astronomical basis for civil time. Time zones around the world are expressed as positive and negative offsets from UT.
- A diferencia del GMT, el UTC no se define por el sol o las estrellas, sino que se mide por los relojes atómicos. Debido a que la rotación de la Tierra se ralentiza, se retrasa con respecto al tiempo atómico. UTC se sincroniza con el día y la noche de UT1, al que se le añaden o quitan segundos intercalares (leap seconds) tanto a finales de junio como de diciembre, cuando resulta necesario. La puesta en circulación de los segundos intercalares se determina por el Servicio Internacional de Rotación de la Tierra, con base en sus medidas de la rotación de la tierra.
- Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich Mean Time. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose. If only limited precision is needed, clients can obtain the current UTC time from a number of official Internet UTC servers. For sub-microsecond precision, clients can obtain the time from satellite signals. Time zones around the world are expressed as positive or negative offsets from UTC, as in this list.
- Coordinated Universal Time or UTC is an atomic realization of Universal Time (UT) or Greenwich Mean Time (GMT), the astronomical basis for civil time. Time zones around the world are expressed as positive and negative offsets from UT. General information
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| abstract
| - Coordinated Universal Time is "[t]he official timekeeping system of the world's nations since 1972."
- Для уменьшения большого объема двойного дублирования темы - ссылка на англорусскую Википедию:
* english: Coordinated Universal Time
* русский: Всемирное координированное время
- Coordinated Universal Time (UTC or CUT) is primary time standard around the world. It is the same as Greenwich Standard Time.
- UTC, or Coordinated Universal Time, is a time zone measure.
- Coordinated Universal Time or UTC is an atomic realization of Universal Time (UT) or Greenwich Mean Time (GMT), the astronomical basis for civil time. Time zones around the world are expressed as positive and negative offsets from UT.
- Coordinated Universal Time or UTC is an atomic realization of Universal Time (UT) or Greenwich Mean Time (GMT), the astronomical basis for civil time. Time zones around the world are expressed as positive and negative offsets from UT. General information "UTC" is not a true acronym; it is a variant of Universal Time, UT, and has a modifier C (for "coordinated") appended to it just like other variants of UT. It may be regarded as a compromise between the English acronym "CUT" and the French acronym "TUC" (temps universel coordonné). It is sometimes erroneously expanded into "Universal Time Code". Originally, the local time at the Royal Greenwich Observatory in Greenwich, England was chosen as standard at the 1884 International Meridian Conference, leading to the widespread use of Greenwich Mean Time in order to set local clocks. This location was chosen because by 1884 two-thirds of all charts and maps already used it as their prime meridian.
- A diferencia del GMT, el UTC no se define por el sol o las estrellas, sino que se mide por los relojes atómicos. Debido a que la rotación de la Tierra se ralentiza, se retrasa con respecto al tiempo atómico. UTC se sincroniza con el día y la noche de UT1, al que se le añaden o quitan segundos intercalares (leap seconds) tanto a finales de junio como de diciembre, cuando resulta necesario. La puesta en circulación de los segundos intercalares se determina por el Servicio Internacional de Rotación de la Tierra, con base en sus medidas de la rotación de la tierra. "UTC" no es realmente una abreviatura; es una variante de tiempo universal, (universal time, abreviadamente UT) y su modificador C (para "coordinado"), añadido para expresar que es una variante más de UT. Se puede considerar como un compromiso entre la abreviatura inglesa "CUT" y la francesa "TUC". Los tiempos UTC de verdadera alta precisión sólo pueden ser determinados tras conocer el hecho de que el tiempo atómico se establece mediante la reconciliación de las diferencias observadas entre un conjunto de relojes atómicos mantenidos por un determinado número de oficinas del tiempo nacionales. Esto se hace bajo los auspicios de la Oficina Internacional de Pesas y Medidas (Bureau International des Poids et Mesures, BIPM). No obstante, los relojes atómicos son tan exactos que sólo los más precisos ordenadores de tiempo necesitan usar estas correcciones; y la mayoría de los usuarios de servicios de tiempo utilizan los relojes atómicos que han sido previamente referenciados a UTC, para estimar la hora UTC. UTC presenta problemas para los sistemas informáticos como Unix que guarda el tiempo como un número de segundos a partir de un tiempo de referencia. Debido a los segundos intercalares, es imposible determinar qué representación va a tener una fecha futura, debido a que el número de segundos intercalares que se han de incluir en la fecha son aún desconocidos. UTC es el sistema de tiempo utilizado por muchos estándares de Internet y la World Wide Web. En particular, se ha diseñado Network Time Protocol como una forma de distribuir el tiempo UTC en Internet. El propio servidor de Wikipedia utiliza UTC como base para su lista de actualizaciones de artículos.
- Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich Mean Time. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose. If only limited precision is needed, clients can obtain the current UTC time from a number of official Internet UTC servers. For sub-microsecond precision, clients can obtain the time from satellite signals. Time zones around the world are expressed as positive or negative offsets from UTC, as in this list. Coordinated Universal Time is based on International Atomic Time (TAI), a time standard calculated using a weighted average of signals from atomic clocks located in nearly 70 national laboratories around the world. The only difference between the two is that UTC is occasionally adjusted by adding a leap second in order to keep it within one second of UT1, which is defined by the Earth's rotation. In the 50 years up to and including 2011, a total of 34 leap seconds have been added; a 35th leap second is scheduled to be added on 30 June 2012. The UTC standard was officially standardized in 1961 by the International Radio Consultative Committee, after having been initiated by several national time laboratories. The system was adjusted several times over the following years, until leap seconds were adopted in 1972 in an effort to simplify future adjustments. A number of proposals have been made to replace it with a new system, which would eliminate leap seconds, but no consensus has yet been reached to do so.
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