KnowraSidereal timeLinked fromLinked fromThe 17 pages that link to Sidereal time, each with the reason it gives.All 17Related 11Compared with 6SecondCompared with: It tracks rotation rather than the cesium frequency defining the second.Coordinated Universal TimeCompared with: It is an astronomy-focused rotational measure, unlike UTC’s atomic basis.Greenwich Mean TimeCompared with: It uses a different celestial reference from GMT’s mean solar basis.HourCompared with: A sidereal day is about four minutes shorter than a solar day, so its hours track a different cycle.Solar timeCompared with: A sidereal day is shorter than a solar day because Earth advances along its orbit.DayCompared with: It measures a rotation against the stars rather than the Sun.