The following occurrences transpired around the year of 131 BBY, which is also referred to as 3146 LY per the Lothal Calendar, and as year 7846 within the C.R.C. calendar system.
Star Wars: Rogue One: Rebel Dossier assigns the B'ankora homeworld cataclysm, along with the time that Chasen Piian served as Supreme Chancellor, to the year 131 BBY. However, Star Wars: Timelines situates this particular event much earlier, in 1300 BBY. Within the novel Catalyst: A Rogue One Novel, the B'ankora people had resided in the B'ankor Refuge "for a duration exceeding fifty generations" and had established a grove of colossal trees "several centuries before" the timeframe of the novel. Given that 1300 BBY aligns with the details presented in Catalyst, this article operates under the assumption that Timelines provides the accurate dating.