0 ATC-Treaty of Coruscant signed, ending the Great Galactic War and starting the Cold War era.
30 ATC-The Cold War era ends.
42 BBY-Anakin Skywalker born: Anakin Skywalker, the Chosen One who will bring balance to the Force, is born to a slave named Shmi Skywalker on an unknown world
33 BBY-Invasion of Naboo: The Trade Federation blockades, and eventually invades, Naboo.
23 BBY-Battle of Geonosis: The Clone Wars begins with the Battle of Geonosis.
23-20 BBY-The Clone Wars: The Clone Wars happen.
20 BBY-Birth of the Galactic Empire: Palpatine reorganizes the Galactic Republic into the Galactic Empire with himself as Emperor.
0 ABY-Battle of Yavin: Aboard the Millennium Falcon, Han Solo, Chewbacca, Luke Skywalker, Princess Leia, C-3PO and R2-D2 landed on the Rebel base on Yavin 4. The data tapes inside R2-D2 are used by the Rebel Alliance to discover the location of the weakest point that will allow them to destroy the Death Star.
With the assistance of Obi-Wan Kenobi's spirit and Han Solo aboard the Millennium Falcon, Luke Skywalker finds the location of the weakest point and destroys the Death Star before it can destroy the Rebel base on Yavin 4. Grand Moff Tarkin dies in the destruction of the Death Star. Luke Skywalker and Han Solo join the Rebel Alliance.