Timeline

Pre-Republic Era

 * 100,000 BBY - The Five Great Species ally
 * 49,000 BBY - Infinite Empire born
 * 30,000 BBY - True Sith War begins and ends, Infinite Empire becomes the sole power of the galaxy
 * 28,000 BBY - Korriban united by Sith'ari King Adas
 * 27,700 BBY - Infinite Empire captures Korriban, Sith depart for Ziost, Sith Space founded
 * 27,500 BBY - Humans depart Coruscant for other worlds via sleeper ships
 * 25,200 BBY - Infinite Empire collapses

Republic Era

 * 25,000 BBY - Republic founded, Jedi Order founded
 * 24,500 BBY - First Great Schism, Minions of Xendor destroyed
 * 24,000 BBY - Most of the Tion Cluster joins the Republic
 * 17,000 BBY - First Alsakan Conflict occurs
 * 12,000 BBY - Chancellor Contispex engages alien races in the Outer Rim in the Crusades
 * 11,500 BBY - Dark Jedi defeated in Kathol Sector
 * 11,000 BBY - Crusades end

Ancient Sith Era

 * 7,003 BBY - Second Great Schism, Hundred Years Darkness begins
 * 6,900 BBY - Hundred Years Darkness ends, First Sith Empire founded
 * 5,000 BBY - Marka Ragnos dies, Great Hyperspace War
 * 4,990 BBY - First Sith Empire genocided
 * 4,950 BBY - Dark History Crisis takes place
 * 4,400 BBY - Gank Massacres occur, Freedon Nadd conquers Onderon
 * 4,250 BBY - Third Great Schism leads to Vultar Cataclysm
 * 4,200 BBY - Mecrosa Sith Order begins

Old Sith Wars

 * 4000 BBY - Mandalorian Crusade begins at Basilisk
 * 3,997 BBY - Krath formed, begin rampaging in Deep Core, Brotherhood of the Sith born
 * 3,996 BBY - Great Sith War made as the Republic's enemies unite
 * 3,996 BBY - Mandalorian Wars begin in Outer Rim, Cleansing of the Nine Houses begins
 * 3,960 BBY - Mandalorian Wars end at Malachor V
 * 3,958 BBY - Jedi Civil War begins, Second Sith Empire rises
 * 3,956 BBY - Jedi Civil War ends with Empire's defeat, Dark Wars begin, Jedi Order destroyed
 * 3,951 BBY - Dark Wars end
 * 3,950 BBY - Gordian Reach secedes and is recovered

Great War

 * 3,756 BBY - Peace for the Republic
 * 3,681 BBY - True Sith Empire emerges from the Unknown Regions under a Sith Emperor
 * 3,671 BBY - The Battle of Bothawui
 * 3,670 BBY - Republic rallies, attacking Kanz Sector
 * 3,667 BBY - The Empire changes strategy
 * 3,661 BBY - The return of the Mandalorians
 * 3,660 BBY - Mandalorian Blockade is broken
 * 3,653 BBY - The Treaty of Coruscant, Interstellar Cold War
 * 3,623 BBY - Great War restarts

Desolous Wars

 * 3,522 BBY - Darth Desolous begins his rampage
 * 3,100 BBY - Hapan Consortium withdraws from Republic
 * 3,000 BBY - Last Alsakan Conflict
 * 2,882 BBY - Paecian Empire collapses

New Sith Wars

 * 2,100 BBY - Darth Phobos attacks the Sith remnants and Jedi Order
 * 2,000 BBY - Fourth Great Schism, Darth Ruin unites the Sith until killed
 * 1,750 BBY - Dark Underlord begins his reign
 * 1,500 BBY - Dark Underlord defeated, Republic engages the Sith
 * 1,433 BBY - Sith unite, Battle of Mizra crushes Republic
 * 1,400 BBY - Jedi take control of the Republic
 * 1,300 BBY - Darth Rivan unites Sith and is killed
 * 1,250 BBY - Belia Darzu unites the Sith
 * 1,230 BBY - Belia Darzu killed by the Mecrosa Order
 * 1,100 BBY - New Sith Empire rules galaxy, Republic Dark Age
 * 1,010 BBY - Sith Civil War
 * 1,005 BBY - Brotherhood of Darkness forms
 * 1,000 BBY - Battle of Ruusan, Ruusan Reformation, Sith Order formed, Solari Sith founded

Republic Golden Age

 * 990 BBY - Jedi believe they have killed Darth Bane, ending the Sith Order
 * 500 BBY - Corellian-Corporate Conflict begins
 * 470 BBY - Corellian-Corporate Conflict ends, Corporate Sector founded, Prophets of the Dark Side founded

Imperial-Sith Wars

 * 200 BBY - Mandalorian Conflict begins, Force grows darker
 * 188 BBY - Dark Jedi Conflict
 * 132 BBY - The Templars of Twilight are formed.
 * 124 BBY - Treaty of Trammis
 * 100 BBY - Mandalorian Conflict ends
 * 32 BBY - Battle of Naboo, System Wars begin, Yuuzhan Vong arrive
 * 24 BBY - Confederacy of Independent Systems formed
 * 22 BBY - First Clone Wars begin
 * 19 BBY - Clone Wars end, Republic becomes the Galactic Empire, the Great Jedi Purge begins, Confederacy destroyed, the Sith under Darth Sidious rule the galaxy.
 * 11 BBY - Second Clone Wars
 * 2 BBY - Rebel Alliance formed, Galactic Civil War begins
 * 0 A/BBY - Battle of Yavin
 * 1 ABY - Shadow Conflict takes place
 * 4 ABY - Battle of Endor shatters the Galactic Empire, New Republic formed
 * 5 ABY - Shattered Galaxy Crisis
 * 10 ABY - Operation Shadow Hand
 * 11 ABY - The Emperor dies for the last time, the Empire wanes.
 * 12 ABY - Imperial Ruling Council destroyed at Battle of Ord Cantrell
 * 13 ABY - Imperial Core formed in Deep Core
 * 19 ABY - Imperial Remnant signs peace accords
 * 23 ABY - Second Imperium Crisis
 * 25 ABY - Imperial Core defeated, Yuuzhan Vong War begins, One Sith founded
 * 27 ABY - Chiss Civil War
 * 30 ABY - Yuuzhan Vong War ends, Galactic Alliance formed
 * 35 ABY - Dark Nest Crisis
 * 36 ABY - Dark Nest Crisis triggers the Swarm War, which ends, but the Chiss-Imperial War begins shortly afterwards
 * 38 ABY - The Deity Crisis occurs
 * 39 ABY - The Chiss-Imperial War and Deity Crisis end
 * 40 ABY - Second Galactic Civil War, Confederation formed, Sith Crusade begins
 * 41 ABY - War ends, Crusade ends, Second Galactic Alliance formed
 * 43 ABY - Fate of the Jedi Crisis, Unification Summit takes place
 * 49 ABY - Miranda Crisis
 * 54 ABY - The Templars of Twilight form the Templar Military Services and begin construction of the Templar Navy
 * 95 ABY - Jedi Civil War, Dominion of Darkness resurface
 * 96 ABY - Jedi Civil War ends, the Secret Invasion takes place, the Dark Reign begins, the beginning of the Tapani-Mikaru Arms Race
 * 99 ABY - The Dark Reign ends with the reunification of the Jedi Order
 * 100 ABY - Force Cold War
 * 124 ABY - Sith Conflicts take place in the Outer Rim and Unknown Regions
 * 127 ABY - Sith-Imperial War begins, emergence of the One Sith as allies of the Empire, Confederacy formed
 * 128 ABY - The Twilight Jedi are absorbed by the Templars of Twilight, The Templars of Twilight prepare to enter the war
 * 129 ABY - Resurgence Crisis
 * 130 ABY - Sith Imperial War ends, Confederacy destroyed, Sith depose the Emperor, Sith Empire formed, True Empire formed, Galactic Alliance Remnant formed
 * 133 ABY - Dark War takes place between Hoole, the Neo-Confederacy. The Sith Imperium is founded.
 * 135 ABY - The The Templars of Twilight join the Sith Imperium.
 * 137 ABY - Darth Krayt deposed
 * 145 ABY - The Shadow War begins
 * 200 ABY - Trismegistus Crisis

The Glorious Fourth Republic

 * 430 ABY - Echo is discovered; Twilight of the Gods begins
 * 470 ABY - The Mandalorian Apocalypse starts
 * 500 ABY - Twilight of the Gods ends; the First Peace starts
 * 600 ABY - Archangels and Alchemists engage the Restored Republic
 * 700 ABY - Twilight of the New Gods occurs; the Second Peace begins
 * 1000 ABY - The Great Betrayal takes place