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A comment on List of selected stars for navigation. Parent comment

Re:List of selected stars for navigation by 4A414B56 on Sunday October 13, 2019 @09:50PM (#21244661)
solar noon is the time @ the shortest shadow. You don't need an almanac for that. It's got problems, but if you're lost on land with a digital watch and a stick it'll work pretty well.
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Re:List of selected stars for navigation by gmiller123456 on Monday October 14, 2019 @03:10PM (#21251660)
Just seeing the shortest shadow doesn't tell you anything. You need a way to correlate it to your position on Earth. Having a watch (set to a known time zone) only tells you what time it happened, which is also pretty useless. You need an almanac (or some computation) to correlate what time solar noon happened on a given day with your longitude.
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Re:List of selected stars for navigation by A484D424 on Monday October 14, 2019 @04:10PM (#21252286)
Lost my last account's login. I'd watch this, you only need to know solar noon in Greenwich and compare it to your own solar noon.

https://www.youtube.com/watch?v=b7yoXhbOQ3Y

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