Granada

Granada: called “The Pumpkin” by everyone but its inhabitants, this oblate planet is probably the fastest-spinning world settled by humanity. Like other worlds of the Nueva Castilian cluster, it is water-rich and very compatible with terrestrial life, allowing humans to thrive. Granada has seen key events in Castilian history: the collapse of its original central government, the invasion of refugees from the Clan worlds, and the birth of the Umayyads. The Seekers of Clan Goliath Scorpion have delved into this history, answering burning questions of the Umayyads’ mysterious origins. - from the publisher's blurb