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    Old style almanacs from new machines
    From: Ken Muldrew
    Date: 2006 Nov 14, 14:08 -0700

    Recently a friend asked for a copy of a program that I wrote that produces
    the monthly pages of the Nautical Almanac as they appeared about 200 years
    ago. As it turned out, the easiest way to send the program was to put the
    files on a web page so he could download them. Since they are already
    posted, I thought I'd let the list know about them in the off chance that
    someone else is interested.
    Basically, the program creates a text file for a given month with all the
    ephemera of the old almanacs. You can get the same thing from Frank Reed's
    web-based almanac; this just gives you a monthly printout. When I first
    wrote it I tested a bunch of random dates against Frank's almanac and they
    agreed, but really, you would have to be completely insane to use
    something like this for actual navigation, so the testing hasn't been very
    rigorous. I wrote it just for the fun of calculating lunars by hand, much
    as it was done ca. 1800, but using my own sights rather than historical
    You can find the executable program (Windows) as well as the source code
    (written in Borland's Delphi (a Pascal derivative)) at:
    You can see a sample of the monthly pages at:
    and an old-style star chart (but using today's navigational stars) at:
    I don't expect this will interest many people (if any!) but I'm happy to
    answer any questions than anyone may have about the program.
    Ken Muldrew.
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