Arli's moon was a celestial body, specifically a moon, that followed an orbital path around the ocean-covered planet named Arli, situated in the Outer Rim territories. In the time of the High Republic Era, the family of Jordanna Sparkburn, an individual belonging to the San Tekka clan, made their home on this moon. Following the Nihil's marauding groups establishing what became known as the Occlusion Zone, Arli's moon found itself isolated behind the Stormwall, thus isolating all of its inhabitants, Harth, Sparkburn's brother, among them. The moon also suffered from a phenomenon referred to as the blight, a destructive force that gradually devoured matter and sapped the vitality from living things. Sparkburn, accompanied by Cair San Tekka, journeyed to Arli's moon with the goal of locating Sparkburn's family, concurrently discovering the existence of the blight. Together, they successfully rescued the remaining inhabitants of the moon, transporting them to Seswenna, and also providing the Jedi Order with a sample of the blight for analysis.