Sundial question

But that’s cheating! :eek: That assumes that you already have a watch! What if you were Tom Hanks, your watch broke in the plane crash, and you had to work everything out from first principles?

Just for grins, if you did trace it out for a whole year, you’d get something like this. This site has all kind of stuff about sundials, most of which I freely admit is beyond me.

Thanks for the link to “This Site”
It is fantastic.