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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Latitude by length of daylight
From: Gary LaPook
Date: 2005 May 6, 02:49 -0700
From: Gary LaPook
Date: 2005 May 6, 02:49 -0700
I just read February's archive and this was a thread at that time. Harold Gatty in his "Raft Book" (1943) provided a table for calculating latitude by length of day with a claimed accuracy of 6 to 10 miles. >Air force Manual AFM 64-5 "Survival" (1961) has a nomogram for the same thing claiming an accuracy of 30 minutes of latitude. The current Air Force survival manual has the same nomogram. > Gary LaPook > > >
