A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Frank Reed
Date: 2017 Mar 28, 10:44 -0700
Lars Bergman, you wrote:
"Can you really extract those fifteen seconds of time from the raw data given by Frank, without knowing the longitude à priori? "
It assumes that I had no speed over the ground, but it does not assume a longitude, so yes, you really can --and should-- apply that correction.