↑The New Essential Chronology states that the Ruusan Reformation occurred in 1000 BBY, which is the zero point of the calendar based on the Ruusan Reformation, so the difference between the calendar based on the Battle of Yavin and the Ruusan Reformation's year-notation system is 1,000 years. This date is derived using simple math based upon other confirmed dates.
↑"You have to understand that it was a time of great uncertainly. We just learned that Darth Revan was back with an armada. Every Jedi that went with him was... lost, corrupted, and as dark as their Master. And then there was you. Many thought you were a spy."―Kavar[src]