sidereal time

/saɪˌdɪriəl taɪm/
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Other forms: sidereal times

Definitions of sidereal time
  1. noun
    measured by the diurnal motion of stars
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    types:
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    day, sidereal 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
    type of:
    cosmic time
    the time covered by the physical formation and development of the universe
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