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.
The Mandalorian: Allies & Enemies is an upcoming World of Reading Level 2 young readers book tie-in to the The Mandalorian television series. It will be written by Brooke Vitale and be released on December 1, 2020.