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  #100  
Old 06-16-2019, 07:44 PM
Kedikat is offline
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Join Date: Aug 2014
Posts: 488
You could tear a long strip of paper bag, if you do it somewhat spiral. Plant a water bottle before sunrise. Mark off the end of the shadow when it equals the length of your paper tape.
Mark the opposite point at sunset.
Using the paper tape and the water bottle as the center. Do some very basic geometry in the sand of intersecting arcs. This will give you a 90 degree line from the east West line. Noon at your location.
If you are not at the Equator. The North South offset of your arc intersections may also help in Latitude estimate. The North intersection being X percent longer than the South one or opposite.
Wait till local noon and tell them that when you make the call.

You suck at navigation. But for some reason you paid attention in geometry. As the sat phone makers also seemed to pick and choose abilities of their system.