Greenwich sidereal time


Also found in: Acronyms.

Greenwich sidereal time

(GST) The sidereal time on the Greenwich meridian. See also local sidereal time.

Greenwich sidereal time

[′gren·ich sī′dir·ē·əl ¦tīm]
(astronomy)
Local sidereal time at the Greenwich meridian. Abbreviated GST.

Greenwich sidereal time

The sidereal time elapsed since the transit of the Greenwich Meridian by the first point of the Aries.
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