I am looking for an accurate way to calculate the moon phase and age very accuratly.
I would like to calculate the age to the second or 5 secon.
I have done a lot of googleing around and found a lot of different code, but the problem is how do I know a particular routine is accurate?
A lot give a rough estimate to the day which is OK but I would like it to the second or 5 seconds.
http://www.timeanddate.com/calendar/moonphases.html has what appears to be very accurate so something like that would be good.
Does anyone have a routine that is accurate in their programming kit? I should be able to convert most languages to c#
cheers
Chris