A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2015 Aug 28, 13:28 -0700
Good catch for February 2020. Add 20 hours following leap day. All I did was to extrapolate forward then do a check against USNO to confirm correction. This table doesn't need to be perfect. rounding to the nearest hour is good enough. You will see that there is 25 hours difference between 1988/1992, 2000/2004,2008/2012. I'm not sure what the rule is for this so I just work up a sight for the future date in question to make sure results are close.
From: Herman Dekker
Date: 2015 Aug 28, 06:29 -0700