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Re: Lunar Phases in Calendar

From: tomas
Subject: Re: Lunar Phases in Calendar
Date: Thu, 19 Nov 2020 10:05:09 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, Nov 19, 2020 at 04:34:49AM +0100, Christopher Dimech wrote:
> Not Complicated.  Just a ball rotating.

That depends on whether you're talking about the
moon itself (then "a ball rotating" is a pretty
good approximation indeed, although, if you look
closely, you're into N-body problems, but I don't
have to tell that to /you/, I think ;-)

Or whether you're approaching it from the viewpoint
of human calendars, trying to make sense of several
incommensurable (and not really constant) observational
constants (solar day, solar year, lunar month) and
to try to fit them into each other. There, the human
creativity has been impressive indeed :-)

So those kinds of "calendars" are, as Byung-Hee politely
puts it, "complicated".

 - t

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