I have enabled the inclusion of astronomical information in my agenda
displays, using Diary.org, including the following:
#%%(diary-astro-day-number)
%%(diary-phases-of-moon)
#%%(diary-sunrise-sunset)

I commented out the first and last, as the clutter is unacceptable to me.
However, I realliy need to keep the phases of the moon.

Tomorrow is the new moon.  Due to time of day of the New Moon, it might
actually be tonight.  And I'd like to be notified in advance, a day or two,
and it would be interesting, for similar reasons to have notice in my agenda
of New Moons and Full Moons a day or two passed.  In fact, I really need to
know how many days past New Moon it is today, as I am watching out for
spawning of corals.

Can anyone suggest how I can do this?

Alan

"...can the human soul be glimpsed through a microscope? Maybe, but you'd
definitely need one of those very good ones with two eyepieces."

   -- Woody Allen, quoted by B. A. Palevitz