1. Moonage

Marvelous!  It works!  I just tried Ad Rienks' 'moonage' program, and it
came out right on the nose (except that certain phases, which are usually
calculated to occur at a particular hour and minute, sometimes last two or
three days according to the program -- but so what?)

A couple of years ago I calculated the date of full moon in October, 2002,
and it turned out to be on the 20th.  I picked that month out of thin air.
This was very much a brute-force calculation, and I had no assurance that it
was anywhere near correct.  Now the moonage program says I hit it dead on.

Wally Riley
wryly at mindspring.com

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2. Moonage

Wally Riley wrote:

>Marvelous!  It works!  I just tried Ad Rienks' 'moonage' program, and it=

>came out right on the nose (except that certain phases, which are usuall=
y
>calculated to occur at a particular hour and minute, sometimes last two =
or
>three days according to the program -- but so what?)

Thanks for the compliments, but as you can see in the header of the
program,
it is only an Euphoria translation of a C program by someone else. The
program
can of course be changed in such a way that it only says 'new moon' when
the
moon_age is 0, etc.

>A couple of years ago I calculated the date of full moon in October, 200=
2,
>and it turned out to be on the 20th.  I picked that month out of thin ai=
r.
>This was very much a brute-force calculation, and I had no assurance tha=
t
it
>was anywhere near correct.  Now the moonage program says I hit it dead o=
n.

How did you calculate this by 'brute force'? Is there an algorithm
different from the
one used in moon_age?

Ad Rienks

Ad_Rienks at compuserve.com

>Wally Riley

>wryly at mindspring.com

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