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    Re: Impossible lunar example. was: Short-cut lunars. was: Clearing lunars
    From: Paul Hirose
    Date: 2010 Aug 28, 15:34 -0700

    Some time ago I pointed out the archive.org site as a source of
    documents, some of which are not available on Google. In this case, the
    1781 Tables Requisite *is* on Google, but doesn't appear in a search!
    What I did was find it on archive.org:
    Then I clicked the "PDF (Google.com)" link on the left. That leads to
    the book on Google.
    Or, you could download the whole book directly from archive.org. Click
    the little link marked "HTTP" on the left. That takes you to a page
    where the various file formats (PDF, etc.) are listed.
    The "Read Online" link has always been troublesome for me. It won't work
    at all with IE 8 -- the browser just sits there doing nothing. With
    Firefox it's really slow compared to the online reader at Google, and an
    incredible memory hog. After a few minutes on a low speed connection, my
    system's page file usage reached 670 MB. That's more than 3x the biggest
    number I've ever seen when not using the reader.
    Hint -- on archive.org, if you have a choice between a file digitized by
    Google, and one *not* digitized by Google, choose the latter. Several
    times I've seen the same publication digitized by more than one
    organization, and have always found the non-Google scan clearly
    superior. A maddening number of Google scans are sloppily done --
    blurry, mis-framed, etc.
    Another archive.org hint -- don't assume the year on the Web page is
    correct. Several times I've found these inaccurate. The only way to be
    sure is to look at the scan.
    Regarding astronomical time vs. civil time vs. nautical time, the memory
    trick I use is to imagine three watches, correctly set to those time
    scales, side by side at civil noon. If you arrange them in alphabetical
    order, they're also in chronological order:
    Aug 28 00h astronomical = Aug 28 12h civil = Aug 28 24h nautical
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