The ecclesiastical full moon however is not bullshit, but an effort to take into account the fact that the astronomical full moon can vary from one region to the next because of the moon's orbit.
Say what? Can you explain this in more detail because it doesn't make sense to me. Are you talking about consecutive full moons or the same full moon as seen from different regions?
I thought this sounded odd so I read up more on how the date is calculated. BAD MOVE, don't do it, you will go insane as to how stupid the whole Easter timing thing is. anyway..
The full moon occurs when you can draw a straight line from the sun, through the centre of the earth and the centre of the moon. This occurs at an exact moment in time, independent of any time zone on earth. But at any point in time the actual date on earth varies due to time zones. So a full moon might occur when it is 3:45pm on say Friday 3rd at one location but this *exact* point in time might be 2:45am on Saturday 4th at some other location with a larger longitude. So, what date is the full moon on, the 3rd or the 4th?
This dating method addresses that problem.http://en.wikipedia.org/wiki/Computus
I think stealing the date for Christmas from the pagans and fixing it was a much better idea than what the morons did for Easter. Like, I knew it was complex but this is bat-shit crazy.
Why do this? Why not just pick a date and be done with it like other religious dates. And it's to do with lunar cycles? Seriously, WTF? Good use for a time machine and a baseball bat. Idiots...but nothing new there I guess.