NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sunrise
From: Greg Rudzinski
Date: 2013 Sep 25, 15:28 -0700
From: Greg Rudzinski
Date: 2013 Sep 25, 15:28 -0700
Sems,
In addition to the USNO calculator is Henning Umlands calculator.
https://www.bluemoment.com/astronav/index.html
See attached an example for today for 50 North at Greenwtch. Plug in various times until you get a zero intercept.
Greg Rudzinski
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