Definitions for universal time

This page provides all possible meanings and translations of the word universal time

Princeton's WordNet

  1. Greenwich Mean Time, Greenwich Time, GMT, universal time, UT, UT1(noun)

    the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

Wiktionary

  1. Universal Time(ProperNoun)

    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.

Freebase

  1. Universal Time

    Universal Time is a time standard based on the rotation of the Earth. It is a modern continuation of Greenwich Mean Time, i.e., the mean solar time on the Prime Meridian at Greenwich, and GMT is sometimes used loosely as a synonym for UTC. In fact, the expression "Universal Time" is ambiguous, as there are several versions of it, the most commonly used being UTC and UT1. All of these versions of UT are based on the rotation of the Earth in relation to distant celestial objects, but with a scaling factor and other adjustments to make them closer to solar time.

Dictionary of Military and Associated Terms

  1. 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.

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