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GMT [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-01-04

English

Subject field(s)
  • Metrology and Units of Measure
  • Chronology
  • Mathematical Geography
DEF

Greenwich time calculated from midnight at the Greenwich meridian (rather than from noon).

OBS

In 1925 the numbering system for GMT was changed so that the day began at midnight, as did the civil day. Some confusion in terminology resulted, though, and in 1928 the International Astronomical Union changed the designation of the standard time of the zero meridian to Universal Time which remains in general use. The term GMT is still used for some purposes (navigation) in English-speaking countries.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Chronologie
  • Géographie mathématique
DEF

Temps solaire moyen de Greenwich augmenté de douze heures, c'est-à-dire, dont le changement de quantième est à minuit plutôt qu'à midi.

OBS

Dans l'échelle de temps universel les jours sont comptés de 0 à 24 h avec changement de quantième à minuit. L'emploi [du terme temps moyen de Greenwich et] du sigle GMT ou de son équivalent français TMG est donc à proscrire.

OBS

temps universel (T.U.) : terme et abréviation en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 1

Record 2 2009-05-12

English

Subject field(s)
  • Metrology and Units of Measure
  • Chronology
  • Mathematical Geography
DEF

The mean solar time of the meridian of Greenwich used historically as the prime basis of standard time throughout the world .

OBS

Greenwich Mean Time; GMT: term and abbreviation officially approved by the Department of National Defence and the Canadian Forces.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Chronologie
  • Géographie mathématique
DEF

Temps solaire moyen de Greenwich où les jours sont comptés de 0 à 24 heures avec changement de quantième à midi.

OBS

temps moyen de Greenwich; TMG : terme et abréviation uniformisés par le ministère de la Défense nationale et les Forces canadiennes.

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Cronología
  • Geografía matemática
Save record 2

Record 3 1997-10-23

English

Subject field(s)
  • Ore Extraction and Transport

French

Domaine(s)
  • Extraction et transport du minerai
Key term(s)
  • GMT

Spanish

Save record 3

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