universal time


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Related to universal time: coordinated universal time, Zulu time

universal time

n. Abbr. UT
The time at the Prime Meridian, calculated from the apparent rotation of the celestial sphere and used primarily by astronomers.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

universal time

n
1. (Units) (from 1928) name adopted internationally for Greenwich Mean Time (measured from Greenwich midnight), now split into several slightly different scales, one of which (UT1) is used by astronomers. Abbreviation: UT
2. (Units) Also called: universal coordinated time an internationally agreed system for civil timekeeping introduced in 1960 and redefined in 1972 as an atomic timescale. Available from broadcast signals, it has a second equal to the International Atomic Time (TAI) second, the difference between UTC and TAI being an integral number of seconds with leap seconds inserted when necessary to keep it within 0.9 seconds of UT1. Abbreviation: UTC
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

u·ni·ver·sal time

(yo͞o′nə-vûr′səl)
The mean time for the meridian at Greenwich, England (0° longitude), which runs through the former site of the Royal Observatory. It is used as a basis for calculating time throughout most of the world. Also called Greenwich Mean Time.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Universal Time

A measure of time that conforms, within a close approximation, to the mean diurnal rotation of the Earth and serves as the basis of civil timekeeping. Universal Time (UT1) is determined from observations of the stars, radio sources, and also from ranging observations of the moon and artificial Earth satellites. The scale determined directly from such observations is designated Universal Time Observed (UTO); it is slightly dependent on the place of observation. When UTO is corrected for the shift in longitude of the observing station caused by polar motion, the time scale UT1 is obtained. When an accuracy better than one second is not required, Universal Time can be used to mean Coordinated Universal Time. Also called ZULU time. Formerly called Greenwich Mean Time.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Universal Time - the local time at the 0 meridian passing through Greenwich, Englanduniversal time - the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere
time - the continuum of experience in which events pass from the future through the present to the past
coordinated universal time, UTC - Greenwich Mean Time updated with leap seconds
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
References in classic literature ?
There is not one universal time, except by an elaborate construction; there are only local times, each of which may be taken to be the time within one biography.
According to the notice, Pakistani airspace will be closed until June 14 at 23.59 (UTC) universal time. There is a difference of five hours between UTC and Pakistan time.
THE sun will be exactly vertical on the earth's equator on Wednesday (March 20) at 9:58pm Universal Time (UT).
According to the US Geological Survey (USGS), the tremblor was situated at a depth of 53 kilometers and struck off near the coast at 1:37 UTC (Coordinated Universal Time).
Based on the astronomical calculations, the Qatar Calendar House (QCH) has announced that the new crescent of the Hijric month "Rabia II 1440 H" will be born on Friday 29 Rabia I 1440 H (December 7, 2018 ) at 10:21am Doha local time (07:21am Universal Time).
1884: Greenwich was adopted as the universal time meridian of longitude.
1884: Greenwich was adopted as the universal time meridian of longitude, from which standard times throughout the world are calculated.
Alas, this is often but not always the case, at least as reckoned in Universal Time.
The "Atomic Ledger" project recorded over 20 million transactions, with Co-ordinated Universal Time (UTC) generated from atomic clocks, from three hours of trading to the ChainZy distributed ledger system.
It has decided to prevent all Qatari airlines and aircraft from crossing the Kingdom of Saudi Arabia's airspace as of from 6/6/2017 at 00:01 according to Coordinated Universal Time (UTC).
It decided to prevent all Qatari airlines and aircraft from crossing the Kingdom of Saudi Arabia's airspace as from 6/6/2017 at 00:01 according to Coordinated Universal Time (UTC).

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