A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2015 Dec 25, 01:06 -0800
"But wait" you say. "What you say may be true if the boat isn't moving but what if I am sailing east at 120 nm each day at 60 degrees latitude, wouldn't that cause the altitudes to increase an additional 4 degrees per day at twilight? "
"No." Your twilight will come an additional 16 minutes earlier GMT but your LHA Aries will be just that 1 degree greater.