Greenwich Mean Sidereal Time (GMST) — An Etymological Dictionary of Astronomy and Astrophysics

Greenwich Mean Sidereal Time (GMST)

زمان ِ اختری ِ میانگین ِ گرینویچ

zamân-e axtari-ye miyângin-e Greenwich

Fr.: temps sidéral moyen de Greenwich

The → sidereal time related to the angle between the → prime meridian and the → mean vernal equinox, measured in the plane of the equator.

See also: → mean; → Greenwich Meridian; → sidereal; → time.

An Etymological Dictionary of Astronomy and Astrophysics