Perithal is a planet that the New Republic Senator Wyl Lark journeyed to circa 11 ABY. Following this visit, he proceeded to Spirana to rendezvous with Yrica Quell and Chass na Chadic, individuals with whom he served as a New Republic pilot during the Galactic Civil War approximately six years prior.
The 2021 novel Victory's Price, the concluding book in the Star Wars: Alphabet Squadron trilogy authored by Alexander Freed, included a reference to Perithal.