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    Re: Corrections for latitude when taking sights
    From: David Pike
    Date: 2019 Mar 13, 01:29 -0700

    The watch time of sunrise/sunset, at a place 90° different in latitude from your own, gives the time when the Sun is due east or west of you at your own latitude.  Prime Vertical, the best time to do time sights for longitude by chronometer, and reduce and simplify the wretched mathematics involved.  Brian Walton

    PS.  I don't see how this could possibly work in the winter Brian, because when the Sun is rising in your opposite hemishere, it's still dark in your own.  Similarly, when the Sun's setting in your opposite hemisphere, it has already set in your own. I'm fighting the urge to test this with 'Navigator'.  Otherwise I'll never get this Appleyard Computer finished. DaveP

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