The Battle of Yavin

The Battle of Yavin was the main turning point in the galactic history of the galaxy as well as for the Galactic Civil War. all times and dates before and/or after the Battle of Yavin are categorized as BBY (Before the Battle of Yavin), or ABY (After the Battle of Yavin). For example, Darth Traegeis, Dark Lord of the Sith, was born in 173 ABY, meaning he was born 173 years after the Battle of Yavin.