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I think I read that a few decades ago borrowed in a public library, a story about a world with floating islands orbiting an axis, not really on a planet.
I think people were flying dragons between those islands. I remember something about geography of the world, or directions given, being described in terms of the orientation with respect to that axis, and the word used (read that in French, probably a translation) was something like "orbitàdroite" or 'orbitàgauche", which would be "on the right of the orbit" or "on the left of the orbit". Any ideas?