BACK TO sidereal
sidereal vs. solar day
[ sahy-deer-ee-uhl ]
adjective
- determined by or from the stars: sidereal time.
- of or relating to the stars.
noun
- the time interval between two successive transits by the sun of the meridian directly opposite that of the observer; the 24-hour interval from one midnight to the following midnight.
- the period of time from sunrise to sunset.