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Digital Dead Reckoning Calcs
From: Roger Errington Jr.
Date: 2023 Nov 20, 12:10 -0800

Is the Lat used when calculating the change in longitude (dLon = Dist x sin course / cos Lat) the original latitude (Lat0) or the adjusted latitude after adding the change in latitude (Lat = Lat0 + dLat/60)?

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