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1. Sidereal Time

   Linked via "revolution around the Sun"

   A key conceptual point differentiating sidereal time from solar time is the definition of the day. A sidereal day is the time interval required for the Earth to rotate $360^\circ$ relative to the distant background stars/). This period is approximately 23 hours, 56 minutes, 4.09053 seconds of mean solar time.
   The divergence between solar time and sidereal time stems from the Earth's simultaneous …