They show an example in the video, it’s just swapping the equator and the prime meridian. Hence why Britain (self-declared center of the world at GMT+0) ends up on the new equator.
The more detailed article on XKCD’s site specifies they’re using the Cassini Projection:
They show an example in the video, it’s just swapping the equator and the prime meridian. Hence why Britain (self-declared center of the world at GMT+0) ends up on the new equator.
The more detailed article on XKCD’s site specifies they’re using the Cassini Projection:
https://en.wikipedia.org/wiki/Cassini_projection