Post by selene on Aug 1, 2011 0:12:03 GMT
For year 2000, length in mean for synodic month (New Moon to New Moon) 29.530588 days (=29d 12h 44m 03s).
However, length in any single synodic month, can vary from 29.26 to 29.80 days.
From perturbing effects by Sun's gravity on Moon's eccentric orbit.
Each one hundred-year phase table, also indicates when any Sun or Moon eclipse takes place.
Eclipse for our Sun can occur only during New Moon, while Moon eclipses; can occur only during Full Moon.
Historians should note, this astronomical dating system used in these tables; includes year "0", while traditional BCE - CE dating convention; does not.
Thus, year "0" here corresponds for '1 BCE', year '-100' being '101 BCE', and so forth.
This old style Julian calendar were used for dates before 1582, while modern Gregorian calendar; now used after 1582.
Click on: moon phases.
However, length in any single synodic month, can vary from 29.26 to 29.80 days.
From perturbing effects by Sun's gravity on Moon's eccentric orbit.
Each one hundred-year phase table, also indicates when any Sun or Moon eclipse takes place.
Eclipse for our Sun can occur only during New Moon, while Moon eclipses; can occur only during Full Moon.
Historians should note, this astronomical dating system used in these tables; includes year "0", while traditional BCE - CE dating convention; does not.
Thus, year "0" here corresponds for '1 BCE', year '-100' being '101 BCE', and so forth.
This old style Julian calendar were used for dates before 1582, while modern Gregorian calendar; now used after 1582.
Click on: moon phases.