# NavList:

## A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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Re: Take two: Latitude and longitude around noon
From: David Fleming
Date: 2017 Apr 5, 00:53 -0700

Not knowing refraction and hence main correction I will ignore it and leave it as an exercise for the reader to do that correction to my answers. ( normal refraction is likely quite different for my two answers )

Change of dec is .7 min/hr or .002moa/sec.

By slope analysis (see my last post for explanation of that process)

the MT time is 6hr 39min 32secs if observer is north of sun and 6 hr 40min 23secs if observer is south of sun

Hs of 7d 9.4m  ->  co Ho  = 82d 50.6min    Sun Dec of 16d 16.6m N

@ 6hr GHA  of sun = 268d 34m

We are either 82d 50.6m N of Sun = 99d 7.2m  ie 80d52.8m N Lat and Longitude is

268d 34m + 9d 53m + 180d =  98d  27m  W

I&C 39m32s

If S of sun Lat = (82d 50.6m - 16d 16.6m) S Lat = 66d 34m South Lat  and Longitude

268d 34m + 10d 5.8m  =  278d 39.4m  or 81d 20.6m E

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