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What are the directions in a spinning space station or hollow planet? North, south, east, and west can be defined in the usual way in terms of rotation, but up and down are reversed.
Intriguingly, the directions in Mah Jongg have an equivalent issue (east and west appear "reversed") because the table corresponds to a map of the sky, not the earth.
@peterdrake
Do you mean using the right hand rule?