Dates in Star Wars

Fans of the fictional Star Wars universe keep track of the dates of key events with a dating system (or calendar) centered around the Battle of Yavin featured in Star Wars: A New Hope. BBY stands for Before the Battle of Yavin, and ABY stands for After the Battle of Yavin. (Occasionally, the defeat of the Empire at the Battle of Endor (four years after Yavin) has been used as an alternate starting year, but has generally been phased out in favor of the current standard system.)

(Note: In-universe, this dating system is used almost exclusively by the Rebel Alliance/New Republic. The earlier Galactic Empire preferred to date events from the Great Resynchronization of 35 BBY, or from the Emperor's ascension to the throne (19 BBY). The Galactic Republic dated years from the Ruusan Reformation of 1,000 BBY.)

A galactic standard year, based on the length of a year on Coruscant, is 368 standard days, one standard day being a day of equal length as a day on Coruscant (twenty-four hours). (A Newtonian rather than relativistic space-time is presupposed, so that over a given interval a single duration of time passes at all locations.)

Spoiler warning: Plot or ending details follow.
Contents

Film Timeline

Timeline of Star Wars History

Before the Battle of Yavin (BBY)

After the Battle of Yavin (ABY)

External links

See also: Dates in Star Wars, 1977, 1980, 1983, 1999, 2002, 2005, Aayla Secura, Admiral Ozzel