Sidereal vs. Synodic

Siderealadjective

Of or relating to the stars.

Siderealadjective

(astronomy) Relating to a measurement of time relative to the position of the stars.

Siderealadjective

(astronomy) Relating to a measurement of time relative to the point of the vernal equinox.

Siderealadjective

Relating to the stars; starry; astral; as, sidereal astronomy.

Siderealadjective

Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day.

Siderealadjective

of or relating to the stars or constellations;

Siderealadjective

(of divisions of time) determined by daily motion of the stars;

Synodicadjective

of, related to or produced by a synod; synodal

Synodicadjective

(astronomy) Of or pertaining to the conjunction of two or more heavenly bodies

Synodicadjective

Of or pertaining to a synod; transacted in, or authorized by, a synod; as, synodical proceedings or forms.

Synodicadjective

Pertaining to conjunction, especially to the period between two successive conjunctions; extending from one conjunction, as of the moon or a planet with the sun, to the next; as, a synodical month (see Lunar month, under Month); the synodical revolution of the moon or a planet.