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Greenwich mean time
Sinônimos
Zulu time
Definição1
The arc of the equatorial measured westward intercepted between the Greenwich antemeridian and the meridian of the mean sun.
Fonte1
KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
Definição2
Greenwich Mean Time or GMT is the time displayed by the Shepherd Gate Clock at the Royal Observatory in Greenwich, London. When the sun is at its highest point exactly above the Prime Meridian, it is 12:00 noon at Greenwich.
Fonte2
WHAT is Greenwich mean time?. In: GREENWICH MEAN TIME.COM. [C1995?]. Disponível em: https://greenwichmeantime.com/what-is-gmt/ . Acesso em: 26 jan. 2022.
Fonte3
SPELLMAN, Frank R. The Handbook of Meteorology. Lanham, Maryland: Scarecrow Press, Inc., 2013. 237 p. ISBN 978-0-8108-8613-1.
Fonte4
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
Acronym in English: GMT.
Nota adicional2
GMT is now called Coordinated Universal Time (UTC) and is also known as Zulu time. UTC is 107 guard expressed in 24-hour format; for example, 7:00 P.M. is 1900 hours (say: nineteen hundred hours).
Nota adicional3
Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
Contexto
Morning and afternoon mixing heights are typically estimated from the vertical temperature profiles observed at selected National Weather Service stations taken at 1200 Greenwich Mean Time (GMT) and surface temperature measurements.
Coordinated Universal Time (UTC) has now replaced Greenwich Mean Time (GMT) as the accepted international standard for clock time.
Subárea1
Meteorology
Related Term
coordinated universal time
Português
tempo médio de Greenwich
Imagem

 Greenwich clock with standard measurements.

Greenwich clock with standard measurements.

Fonte: http://en.wikipedia.org/wiki/File:Greenwich_clock.jpg