A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: John D. Howard
Date: 2018 Sep 26, 15:16 -0700
I do not understand the need for super acurate watches. Any quartz watch will keep time for a month or so with reasonable acuracy. Unless you plan to be at sea many months without making landfall ( two women and two dogs ? ) than you can check your watch, to the second, using your sextant.
You will have paper charts that have lat and long for most places. With that and your sextant ( and almanac ) do a time sight. Set your watch or note how far off it is, down to the second. No radio, internet, or GPS needed.
Like Frank said - invert it. Use cel nav to get the time!