bug#61460: 30.0.50; Calendar shows eclipse for quarter moon

[Eli Zaretskii]

> Cc: 61460@debbugs.gnu.org
> From: Michael Heerdegen <michael_heerdegen@web.de>
> Date: Mon, 13 Feb 2023 11:04:46 +0100
> 
> Ulrich Mueller <ulm@gentoo.org> writes:
> 
> > No, it is the "argument of latitude" (and yes, the nomenclature is
> > slighly confusing). Its value is 0° for the ascending node, which is
> > what we want.
> >
> > https://en.wikipedia.org/wiki/Argument_of_latitude
> > | It is the sum of the more commonly used true anomaly and argument
> > | of periapsis.
> 
> Thank you very much.  So "argument" is like the argument of a complex
> number, and this one correlates with the latitude, or something like
> that.  Hmm, I think adding some small comments to the code would not
> harm, you seem to understand it.

Yes, please add such comments there, and thanks.