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Signing UpStep 1I. Notice about Copyright
Techniques used in celestial navigation follow the standard course of planets and stars, as well as the physics behind that governs those courses, which are laws of nature. U.S. and international copyright law forbid the copyright, patent, trademark, etc of natural laws. Just because you discovered it, doesn't mean you own it.
The reason I include this is that some of these techniques are several thousand years old, while a few have only been discovered recently with current technology. But again, the same principle applies, you can't own it.
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Sorry! I seem to have lost my comment. Please take my comments as constructive criticism. Please add info about daylight savings time. Since the sun will not be directly overhead in most places, step 7 needs to be clarified . I suggest the following: (!.) determine the E-W line as in step 4. (2.) Place a perpendicular (90 deg) line across the E-W line. Place a stick at this line. (3.} When the shadow falls on the N-S line ( I believe it will also be min.), record time. Proceed with the calculations as in step 7.