Aaron Brown (asb@CSUA.Berkeley.EDU)
Tue, 14 Dec 1999 15:40:29 -0800 (PST)

I don't see how the coincidence of full moon with the solstace should have
anything to do with the brightness of the moon.  The only significance
is that from the northern hemisphere the full moon will be up in the sky 
for a longer time than usual.  Am I wrong?

> The coincidence of Full Moon with the solstice is about every 19
> years...the ol' Metonic Cycle.  

Shouldn't it be once every roughly 29 years?  Since there are roughly 29
days in a lunar month, there is a 1/29 chance that the full moon will fall
on the same day as the solstace in a given year.  On the other hand, I am
aware of the 19 year cycle you mention.  But we can't both be right...


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