Lunar Horns and Latitude
I am asking this question on behalf of my partner who is
a middle school science teacher with the Palm Springs Unified
School District. After a lifetime in Seattle my casual observation
of the moon, it seems the tips of the crescent moon typically form
a line pointing to my horizon, perhaps 30 degrees or so from
perpendicular. This spring, after moving to Palm Springs,
California I have observed the tips of the crescent moon form a
line that is almost parallel with my horizon. What can account for
this difference in observations?
Good question. I believe the difference in where the line between
the tips of a crescent Moon points are answered with your change in latitude.
Hope this helps!
David H. Levy
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Update: June 2012