Sidereal time /sadril/ is a time-keeping system that astronomers use to locate celestial objects. Using sidereal time it is possible to easily point a telescope to the proper coordinates in the night sky. Briefly, sidereal time is a ''time scale that is based on Earth's rate of rotation measured relative to the fixed stars'' rather than the Sun.

What's the best answer to this question: the sidereal day is determined by the earth's rotation with respect to the stars?
yes