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    Re: The "Raft Book" by Harold Gatty - ?
    From: Tony Oz
    Date: 2017 Oct 17, 02:45 -0700

    Hello!

    Obviously, the tape is for obtaining the GHAAries for the date given. To account for the leap-year cycle - the tape is made four-years long in its date scale thus leaving out only the precession part of the date-to-GHAAries conversion process. It is not intended to be a "long-term/permanent" almanac, so within the limitations of conditions on a raft - the resulting accuracy is sufficient, at least for the several years after 1943.

    Please comment.

    Warm regards,

    Tony

       
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