If the earth stopped rotating, days would be about 365x longer.

I wanted to figure out a more exact answer, but I'm hung up on the fact that the length of a day is influenced by rotation and revolution together.

I have a feeling this requires calculus. If Sir Isaac Newton were here, I think he'd know what to do.

obligatory xkcd: https://www.youtube.com/watch?v=gp5G1QG6cXc

I want this shirt with the Spaaace logo