Slightly less than the 24 hours of a solar day (23 hours, 56 minutes, 4.1 seconds). Used in astronomy, sidereal means "when a star crosses the meridian" (the meridian is an imaginary circle around ...

“The mean tropical year is approximately 365 days, 5 hours, 48 minutes, 45 seconds.” See? Totally different: the sidereal ...

Judicious interpretation of planet transit and its effects ensure success of any task initiated under the influence of such transits. Below is the list of major planetary transits about to happen in ...