Astronautics Vocabulary

The Astronautics Vocabulary is a glossary of terms that pertain to the science and technology of spaceflight. This alphabetical list can be navigated by clicking on the letters A-Z displayed on this page.

Definition of Greenwich Mean Time (GMT)

Translation:
temps moyen de Greenwich (TMG)
Definition:
Astronomical unit based on the Sun's passage over Greenwich (noon). Not to be confused with the hour at which an event occurs in the UT system.
Other Definition:
None
Synonym:
None
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