BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
One of the most cunning and ruthless minds in all of the Star Wars, Grand Admiral Thrawn is back with his own six-issue miniseries! Written by Jody Houser (ROGUE ONE ADAPTATION) and drawn by Luke Ross (STAR WARS: DARTH MAUL, STAR WARS: THE FORCE AWAKENS ADAPTATION), follow the comic adaptation of Timothy Zahn's New York Times best-selling novel about Thrawn's rise in the Imperial ranks, on his way to becoming one of the most feared military tacticians in the galaxy far, far away.!