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There is no expected error in the traditional method with a clock. Your method does not represent the traditional method, and would lead to a large error not present there.

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 Quote by mfb Well, use a modern clock then. If the US government (or North Korea) has and uses enough bombs to break all clocks on earth (including wrist watches), latitute estimation is probably not your most urgent problem. Yes, if you have a clock. Or a local man telling you the longitude so you can calculate the expected number of crossings for that longitude.
It's longitude that's the problem. If you can see the Sun at midday and you have a working calendar then you know your latitude.
With a set of ephemeris tables, a telescope and a sextant and a bit of time, you could decide where you were even if you had been asleep for an unspecified time. The time would be needed to get yourself into the right month of the right year.
Of course it's not necessary today but, when the bomb drops and you need to find that tiny island in the middle of the ocean, the clock-less and GPS-less solution is always there - and it's surprisingly accurate. And, hey, it's not the most random and pointless procedure that I've read on these fora!
 yes theres an expected error in the traditional method and its the error of the clock if the clock has an error of 24 hours along 10 day youll make an error in your position of exactly 360º now with my system of virtual stars rotating opposite sense in the sky from a 24 hour error in the clock along 10 days you misspoint longitude in 36º unless im wrong of course thats why i post

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 Quote by antonio glez yes theres an expected error and its the error of the clock if the clock has an error of 24 hours along 10 day youll make an error in your position of exactly 360º now with my system of virtual stars rotating opposite sense in the sky from a 24 hour error in the clock along 10 days you misspoint longitude in 36º unless im wrong of course thats why i post
The system still relies on an accurate time measurement - however you dress it up. You still need to know where these "Virtual stars" are supposed to be at the time you do your observation.

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Quote by sophiecentaur
 Quote by mfb Well, use a modern clock then. If the US government (or North Korea) has and uses enough bombs to break all clocks on earth (including wrist watches), latitute estimation is probably not your most urgent problem.
It's longitude that's the problem.
:(
Used the wrong word one time and you found it. Actually, the statement is even more accurate that way .

@antonio glez: What you call "expected error" is the actual method to determine longitude.

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