# How many times does the earth rotate per year?

Assuming there are exactly $$365$$ days per year. How many rotations about its axis does the earth make in one year?

• @RewanDemontay eh, I'm kinda on the fence. It definitely has a "single definitive answer", but might be considered "textbook". – Hugh Apr 10 at 22:51
• Our guiding principle is roughly presented here - Are math-textbook-style problems on topic? - the general idea is that a problem with a "Clever or elegant solution, often an "aha" moment; Unexpected problem statement; or Unexpected or counterintuitive result" might be a good puzzle. I'd be inclined to let this pass, given that to folks who have never really thought about it, the result is likely to be surprising. (Having said that, it's trivially solvable without actually resorting to math, making it, well, less puzzle and more trivia.) – Rubio Apr 10 at 23:03
• I also have some sympathy for this question - I have actually thought about posting this riddle, in some form, before but it's difficult to make it sound enticing. Needless to say, the result is not immediately obvious. – hexomino Apr 10 at 23:15
• @hexomino I agree. This was something I actually thought about today and figured out. When I typed it out though, it doesn't seem enticing at all. Maybe someone can transform it into a more wordy puzzle. – Jac Frall Apr 10 at 23:17
• Related puzzle about coin rotating around a set of coins: puzzling.stackexchange.com/questions/56787/… – Presh Apr 11 at 2:36