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    Re: Chronology of Celestial Navigation and Related Topics (Update 1)
    From: Ed Popko
    Date: 2018 Jun 10, 04:19 -0700

    I received quite a few suggested additions to the navigation chronology, attached is the first update to the original post. New items are in shown in bold blue font. Contributors and topics pending  are listed below. Any suggestions appreciated.

    I will look for a way to distinguish exact years, circa datas, century references, approximate and prior-to.

    Dealing with history is an imprecise art at best.

    Thanks to everyone for your inputs.

    Ed Popko

    File:
    Milestones-in-Navigation-History-V2.xlsx
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