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Re: Compass correction using sunrise
From: Al Stewart
Date: 2022 Jun 27, 07:25 -0700

Hi Francois,

sharing a screenshot of my Excel spreadsheet (calculates Hc and Zn using the spherical trig equations) at the moment when Hc = 0, which will correspond with your Option 3 calculation OK!

Yours aye,

Al Stewart

Jamaica

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