Greekx

At noon the shadow drop is pointing north. At noon the sun is overhead. The opposition is south. At that time if you walk alongside the sun your headed west so nightfall will approach after sunset and the opposite here is morning which is east. I want to start my stopwatch at the second the sun sinks into the ocean and see how long it takes for it to come up around again. And from there I can make further calculations. Then I want to track the moon because I don’t know what it is doing I know it mostly comes up at night. And I want to figure out the earth’s axis rotation and the orbit of the moon using ancient methods but modernized a bit by little gadgets here and there that we have today. With shadows during day I can calculate triangles here and there but how do you calculate circles and other shapes by using primitive means? I don’t want to back in time but knowing this I think I can build more technology of quality. I’ve studied a little Trigonometry but not enough and that’s why math is very important.