Re: local units

[Logical Language Group <lojbab@ACCESS.DIGEX.NET>]

Sorry, I keep being fooled by your net address into thinking you are in the
Astronomy Dept.  Astronomers don't use degrees in sky positions of "longitude",
but instead divide the sky into 24 "hours" of 'right ascension', each of
which corresponds to 15 degrees of sky 'longitude', meaning that there is
an exact conversion between the two.  But sky positions are always given as
"right ascension" and "declination" (= latitude, ranging like normal from
-90 to +90 degrees).

lojbab