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Re: moon visible by day...

Subject: Re: moon visible by day...
From: Bruggeman, Jan (JanB@XXX.XXX)
Date: Wed Feb 07 2001 - 09:38:28 EST

hello all,

<quote>
The day (24 h) is (used to be) divided into 4 "quarters", 2 for day (first
and last) and 2 for the night (also called first and last).

This means that the start of the day is 0600 and the start of the night is
1800. Wright ?
<end quote>

if declination is 0, yes. otherwise, we do not see 180 of the object's
rotation. It can be more, when the declination of the object is towards us,
or less, if otherwise.

as example, consider the sun in summer: declination is to our side: we see
more than 180 degrees of the path of the sun, which makes for a longer day.
Winter is just the inverse: declination is away from us. Expressed this way,
it holds true wherever you are.

This also accounts for the small differences between my theoretical and your
practical approach.

greetings,
mvg,
Jan Bruggeman - ON4AIN
mail : jan@XXX.XXX
web : http://jan.bruggeman.com



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