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