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

From: Michael Heerdegen <[email-masked]>
Date: Mon, 13 Feb 2023 07:01:15 +0100

Michael Heerdegen <[email-masked]> writes:

> Why is our calculation so complicated?

Why the is latitude of the moon:

#+begin_src emacs-lisp
(moon-lat (mod
            (+ 21.2964
               (* 390.67050646 index)
               (* -0.0016528 time time)
               (* -0.00000239 time time time))
            360.0))
#+end_src

calculated as a mod 360.0 value?  I would expect this for the longitude,
latitude should be in -90°...90° AFAIU.  Is it a typo?

Michael.