I guess 2 because it rotates once from the circumference being the same, and another for the viewing angle (ie: when it's halfway around, it will be right side up for us)
https://imgur.com/aMaI3hj https://imgur.com/7PsdJNc
https://imgur.com/eK8vZVn https://imgur.com/u2HR4nG https://imgur.com/nQGM5cZ