A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Geoffrey Kolbe
Date: 2018 Jul 30, 10:11 -0700
Well, think about it for a few seconds....
If you stand at the poles the line connecting the moon's horns will be (roughly) vertical.
If you stand at the equator and watch the moon rise or set, the line connecting the moon's horns will be (roughly) horizontal.