Internet Based
Moon Phase Calculator

                         time: ad2010-sep-08   16:55:26 UT+00h00m
                  day of week: wed
                          MJD: +00055447.705162
                           JD: +02455448.205162
                            t: +00003537.705162
                mean lunation: +001085.00238897
              mean moon phase: 000.86003°
                            ~ new moon
   ecliptic longitude of moon: 169.6°
    ecliptic latitude of moon: -4.7°
  horizontal parallax of moon: 01.022°
  geocentric distance of moon: 357738 km
    ecliptic longitude of sun: 165.9°
     ecliptic latitude of sun: 00.0°
   geocentric distance of sun: 150707083 km
ecliptic longitude difference: 003.7°

To calculate past or future moon phases, enter date and time below and click "calculate".
For the current moon phase, leave the input box blank and click "calculate".


Underlying algorithm was produced in a way that it should not contain errors.
It has been tested about 5 times on random dates between 6000BC and 10000AD.
All results of these tests agreed exactly with standard tables.
-author, August 2, 2001

back to the Moonstick Information Site