I'll agree that the rotational axis of a planet is relevant to the projection of a map. There is no "East pole", and it makes sense to give special significanc

I'll agree that the rotational axis of a planet is relevant to the projection of a map. There is no "East pole", and it makes sense to give special significance to the North and South directions. A transverse map projection [1] doesn't make much sense as a default. The linked image shows the lines of longitude severely distorted, and a compass rose would not make sense on this map. There is a real, physical reason why north and south should be at opposing edges of the map. But it's perfectly reasonable to rotate a map by 90 or 270 degrees - nothing about the "way planets work" implies that you need to orient the map in this direction when raising it from a horizontal plane to a vertical wall. If anything, the reason would be that the circumference of the equator is twice the distance between the poles, and human eyes are better suited for panning in the horizontal. [1]: https://en.wikipedia.org/wiki/Transverse_Mercator_projection#/media/File:MercTranSph.png https://en.wikipedia.org/wiki/Transverse_Mercator_projection...