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Related to sidereal time: Sidereal clock
Time based on the rotation of the earth with reference to the background of stars.
(Astronomy) time based upon the rotation of the earth with respect to the distant stars, the sidereal day being the unit of measurement. See also sidereal day
time measured by the diurnal motion of stars.
Time measured by Earth’s rotation against the stars.
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|Noun||1.||sidereal time - measured by the diurnal motion of stars|
cosmic time - the time covered by the physical formation and development of the universe
sidereal day, day - the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
sidereal year - the time for the earth to make one complete revolution around the sun, relative to the fixed stars
sidereal hour - 1/24 of a sidereal day
sidereal month - period between successive conjunctions with a star, 27.322 days