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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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    Re: Celestial Navigation on the surface of Mars
    From: Paul Dolkas
    Date: 2018 Nov 11, 00:41 +0000

    JPL actually had a bunch of Mars watches made for the Spirit/Opportunity controllers, since they had to operate on Mars time. I forget who made them, but I bet they will become collector’s items. It shouldn’t be too hard to program a modern smart watch to have a Mars display, and I have to believe something like that would be taken on a Mars mission. I doubt they will be taking Omega Speedmasters like they did on Apollo.


    Paul Dolkas


    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Greg Rudzinski
    Sent: Saturday, November 10, 2018 6:46 AM
    To: Paul Dolkas
    Subject: [NavList] Re: Celestial Navigation on the surface of Mars


    The length of day on Mars is very close to that of Earth.  I would propose a Mars second as 1.027 Earth seconds.  A Mars watch could be made out of an Earth watch just by slowing a hair.  Earth latitude and longitude could be used on Mars by  using a nautical mile of .5324  of the Earth nautical mile (close to a kilometer). 

    Greg Rudzinski

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