Что (кто) такое Coordinated Universal Time - определение
Coordinated Universal Time
![Graph showing the difference [[DUT1]] between UT1 and UTC (in seconds). Vertical segments correspond to leap seconds.](https://commons.wikimedia.org/wiki/Special:FilePath/Leapsecond.ut1-utc.svg?width=200 "Graph showing the difference [[DUT1]] between UT1 and UTC (in seconds). Vertical segments correspond to leap seconds.")
PRIMARY TIME STANDARD
Universal Time Coordinated; Universal Coordinated Time; UTC(Internet); UTC Internet; UTC (Internet); Zulu time; Universal Time Coordinate; Coordinated universal time; Co-ordinated Universal Time; Co-ordinated universal time; Universal co-ordinated time; Utc; U.T.C; U.T.C.; ITU-R TF.460-4; Zulu Time; UTC time; Universal Time Coordination; UTC; Temps Universel Coordonné; Universal Time, Coordinated; History of UTC; Time in Space; Universal time coordinated; Universal Time Co-ordinated; Coordinated Universal Time (UTC)
<time, standard> (UTC, World Time) The standard time common to
every place in the world. UTC is derived from {International
Atomic Time} (TAI) by the addition of a whole number of "leap
seconds" to synchronise it with Universal Time 1 (UT1), thus
allowing for the eccentricity of the Earth's orbit, the
rotational axis tilt (23.5 degrees), but still showing the
Earth's irregular rotation, on which UT1 is based.
Coordinated Universal Time is expressed using a 24-hour clock
and uses the Gregorian calendar. It is used in aeroplane
and ship navigation, where it also sometimes known by the
military name, "Zulu time". "Zulu" in the phonetic alphabet
stands for "Z" which stands for longitude zero.
UTC was defined by the International Radio Consultative
Committee (CCIR), a predecessor of the ITU-T. CCIR
Recommendation 460-4, or ITU-T Recommendation X.680 (7/94),
contains the full definition.
The language-independent international abbreviation, UTC, is
neither English nor French. It means both "Coordinated
Universal Time" and "Temps Universel Coordonné".
{BIPM
(http://bipm.fr/enus/5_Scientific/c_time/time_1.html) }.
{time/time.html">The Royal Observatory Greenwich
(http://rog.nmm.ac.uk/leaflets/time/time.html) }.
{History of UTC and GMT
(http://ecco.bsee.swin.edu.au/chronos/GMT-explained.html) }.
{U.S. National Institute of Standards & Technology
(http://its.bldrdoc.gov/fs-1037/dir-009/_1277.htm) }.
{UK National Physical Laboratory
(http://npl.co.uk/npl/ctm/time_scales.html) }.
{US Naval Observatory
(http://tycho.usno.navy.mil/systime.html) }.
{International Telecommunications Union
(http://itu.int/radioclub/rr/arts02.htm) }.
{Earth's irregular rotation
(http://foldoc.org/pub/misc/earth_rotation) }.
(2001-08-30)
Universal Time Coordinated
PRIMARY TIME STANDARD
Universal Time Coordinated; Universal Coordinated Time; UTC(Internet); UTC Internet; UTC (Internet); Zulu time; Universal Time Coordinate; Coordinated universal time; Co-ordinated Universal Time; Co-ordinated universal time; Universal co-ordinated time; Utc; U.T.C; U.T.C.; ITU-R TF.460-4; Zulu Time; UTC time; Universal Time Coordination; UTC; Temps Universel Coordonné; Universal Time, Coordinated; History of UTC; Time in Space; Universal time coordinated; Universal Time Co-ordinated; Coordinated Universal Time (UTC)
<time, standard> An incorrect term for {Coordinated Universal
Time}.
(2001-08-01)
Coordinated Universal Time
PRIMARY TIME STANDARD
Universal Time Coordinated; Universal Coordinated Time; UTC(Internet); UTC Internet; UTC (Internet); Zulu time; Universal Time Coordinate; Coordinated universal time; Co-ordinated Universal Time; Co-ordinated universal time; Universal co-ordinated time; Utc; U.T.C; U.T.C.; ITU-R TF.460-4; Zulu Time; UTC time; Universal Time Coordination; UTC; Temps Universel Coordonné; Universal Time, Coordinated; History of UTC; Time in Space; Universal time coordinated; Universal Time Co-ordinated; Coordinated Universal Time (UTC)
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time.
Википедия
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time.
Примеры употребления для Coordinated Universal Time
1. "You can toot your horn an extra second this year." Coordinated Universal Time coincides with winter time in London.
2. To fix this, the International Telecommunication Union in 1'72 stipulated that "Coordinated Universal Time," an atomic time used as the world standard, could not diverge from astronomical time by more than 0.' seconds.
3. The adjustment will be carried out by sticking an extra second into atomic clocks worldwide at the stroke of midnight Coordinated Universal Time, the widely adopted international standard, the U.S.
4. Although it is possible to have a negative leap second –– that is, a second deducted from Coordinated Universal Time –– so far all have been add–ons, reflecting the Earth‘s general slowing trend due to tidal breaking.
5. The extra second is added to Coordinated Universal Time (UTC) âЂ« the official world time, based on the performance of atomic clocks âЂ« to make it agree with astronomical time to within 0.' second.