Back to: "U"
UTC
- Usado para
- universal time coordinated
- Sinônimos
- coordinated universal time; universal time
- Definição1
- The basis for civil timekeeping. It is formally defined by a mathematical formula which relates UT to Greenwich mean sidereal time. Depending on the context, universal time and UT are commonly used to mean 1) UT0, which is dependent on the observer's location; 2) UT1, which removes the effect of the motion of the geographic pole; or 3) coordinated universal time (UTC). Since 1 January 1972, weather services have used UTC as the standard of time.
- Fonte1
- AMERICAN METEOROLOGICAL SOCIETY. Glossary of meteorology. [S.l., última modificação 05 oct. 2015]. Disponível em: < http://glossary.ametsoc.org/wiki/Main_Page >. Acesso em: 27 jul. 2022.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 5 to the Convention on International Civil Aviation: unites of measurement to be used in air and ground operations. 5th ed. Montreal, 2010. (Annex 5).
- Nota adicional1
- Universal Time Coordinated, also referred to as Z or GMT. Another Acronym: UT.
- Contexto
- Coordinated Universal Time (UTC) has now replaced Greenwich Mean Time (GMT) as the accepted international standard for clock time.
- Related Term
- GMT
- Português
- tempo universal coordenado