The Galactic Standard Calendar is the standard calendar system used to reference all of Star Wars, and is based on the Battle of Yavin (BBY/ABY), from Star Wars IV: A New Hope and the destruction of the first Death Star during the Galactic Civil War.
The Galactic Calendar is the in-universe calendar system adopted by the Galactic Senate following the Treaty of Coruscant (BTC/ATC). This is the calendar system that would be used by our characters.
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Setting the Stage
5000 BBY || 1347 BTC
The fifth fleet, after suffering a loss at Korriban, retreats to Wild Space
Rhade meets with Romuin, Lucien & an unlikely ally
Rhade enter 1st seclusion self quest for self enlightenment
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3995 BBY || 342 BTC
The Mandalorian Wars, based on perspective.
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3964 BBY || 311 BTC
The Mandalorian Wars, based on perspective.
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3960 BBY || 307 BTC
The Battle of Malachor V.
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3967 BBY || 300BTC
Rhade comes out of seclusion and rejoins the Jedi order
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3958 BBY || 305 BTC
The Jedi Civil War.
Rhade became a hero during the war. Master Rhade is given the title of Grand Master of the Jedi Order.
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3956 BBY || 303 BTC
Star Wars: Knights of the Old Republic begins.
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3955 BBY || 302 BTC
Star Wars: Knights of the Old Republic ends.
Rhade, Romuin, Lucien & Tobias discovered the System Commonwealth through a vision quest lead by Rhade.
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3951 BBY || 298 BTC
Star Wars: Knights of the Old Republic 2, The Sith Lord
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The Great Galactic War or Great War
3701 BBY || 48 BTC
Darth Malgus is born.
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3699 BBY || 46 BTC
Satele Shan is born.
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3687 BBY || 35 BTC
The original Emperor of the Commonwealth is murdered. The Commonwealth falls into chaos and Rhade steps forward to be named Emperor of the Systems Commonwealth.
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3685 BBY || 33 BTC
Project Knightfall created by the First Council of the Commonwealth.
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3683 BBY || 30 BTC
Rhade hands Jedi Master Zym the title of Grand Master.
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3681 BBY || 28 BTC
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3681 BBY || 28 BTC
The Great Galactic War begins.
Sith Onslaught
Skirmish in the Tingel Arm. Imperial victory.
Assault on the Aparo Sector. Imperial victory. Apara abandons the Republic and joins the Empire.
The Tingel Arm Campaign. Imperial victory.
The first Battle of Korriban ("Return" cinematic trailer). Imperial victory.
The Battle of Sluis Van. Imperial victory. Republic shipyards destroyed.
The Blockade of the Rimma Trade Route. Imperial Victory. Republic supply lines strangled and political tensions rise.
Battle of Eliad. Imperial invasion halted.
The Minos Cluster Campaign. Imperial victory. Number of successful Imperial operations.
Darth Vich discovers Rattatak and proceeds to build an army.
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3680 BBY || 27 BTC
The First Battle of the Seswenna Sector. Imperial victory.
The Second Battle of Seswenna Sector. Rimma Trade Route blockade broken.
Darth Vich's insurrection is thwarted. Rattataki introduced to the Empire.
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3678 BBY || 25 BTC
Massacre on Lenico IV. Exal Kressh learns of the Emperor's Children. Ortolan tribes massacred.
Hunt for Exal Kressh. Exal Kressh executed.
Invasion of Begeren. Imperial victory.
Engagement in the Mid Rim. Imperial victory.
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3674 BBY || 21 BTC
Battle of Bomodon. Republic victory.
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3671 BBY || 18 BTC
Third Battle of the Seswenna Sector. Imperial victory.
The First Battle of Bothawui. Republic Victory.
The Second Battle of Bothawui. Draw.
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3670 BBY || 17 BTC
Battle of Balmorra. Imperial victory.
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3668 BBY || 15 BTC
Capture of the Dread Masters. Republic victory. The Dread Masters imprisoned on Belsavis.
Engagement over Belsavis. Republic victory. Fatality crashes into Section X.
3667 BBY || 14 BTC
Battle of Alderaan. Republic victory. Alderaanian government pledges military support to Republic.
Campaign near Gell Mattar. Republic Victory.
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3665 BBY || 12 BTC
Battle of Hoth. Imperial victory.
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3661 BBY || 8 BTC
Blockade of the Hydian Way. Mandalorian victory. Republic supply crisis.
Battle near Devaron. Mandalorian victory. Jedi unable to break Hydian Way blockade.
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3660 BBY || 7 BTC
Battle of the Hydian Way. Republic victory attributed to Hylo Visz. Republic supply lines restored.
Battle of Ord Radama. Republic victory.
Occupation of Balmorra. Imperial strengthens its hold on the planet.
Third Battle of Korriban. Republic withdraw.
Battle of Ziost. Imperial victory.
Battle of Ashas Rae. Imperial victory.
Battle of Serenno. Imperial victory.
Reconquest of Ord Radama. Imperial victory.
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3658 BBY || 5 BTC
Defeat of the Imperial Seventh Fleet. Republic victory.
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3653 BBY || 0 BTC
Battle of Rhen Var. Republic victory.
Battle of Drunkenwell. Imperial victory.
The Sacking of Coruscant ("Deceived" cinematic trailer). Imperial occupation of Coruscant .
Alderaan Peace Conference. Republic and Imperial dignitaries negotiate a peace treaty.
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The Cold War
Settling the Great War
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3653 BBY || 0 ATC
The Republic is forced to sign the Treaty of Coruscant.
The Great Galactic War ends. Imperial victory.
The First Battle of Dantooine. Republic victory.
Attack on the Envoy. Imperial victory.
Bombing of the Senate Tower. Treaty of Coruscant supporters assassinated.
The Second Battle of Dantooine. Imperial victory.
Jostling for Advantage
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3651 BBY || 2 ATC
Attack on Mindor. Destruction of Chagrian colony.
Satele Shan Enlists the aid of the Commonwealth and Rhade to rediscover Tython.
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3649 BBY || 4 ATC
Imperial Attack on Voss. Voss victory.
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3648 BBY || 5 ATC
Systems Commonwealth lead by Rhade and Rufus sign a Republic Treaty
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Star Wars: The Old Republic
3643 BBY || 10 ATC
Star Wars: The Old Republic Launches. In-game class stories' time frames differ and overlap.
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3642 BBY || 11 ATC
Collapse of Peace
The Battle of Balmorra. Republic victory.
Invasion of Taris. Imperial force raze Republic Restoration Project.
Battle of Taral V. Heroes of the Republic assist Jedi Master Oteg.
Battle of the Maelstrom. Heroes of the Republic assist Jedi Master Oteg.
Attack on the Dorin's Sky. Champions of the Empire infiltrate the Dorin's Sky.
Battle of the Foundry. Champions of the Empire secure the Foundry.
Quesh War. Imperial forces attempt to disrupt Republic operations. Ongoing.
Battle of Hoth. Republic, Imperial, and Pirate Confederate forces fight for control of the Star Ship Graveyard.
The Cold War ends
Conquest of Makeb. Hutts negotiate settlement with the Republic. Empire secures Makeb mining operations.
Failed coup lead by General Pots in an attempt to takeover the Commonwealth
Raid on Arcanum. Lord Tagriss steals several Sith relics.
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3639 BBY || 14 ATC
Seizure of CZ-198. Rebellious entities of Czerka Arms are subdued. Republic and Empire vie for assets. Ongoing.
Dread War. Republic & Imperial forces and the Systems CommonWealth engage the Dread Masters on Oricon.
The Battle for Kuat. Imperial forces attempt to seize the planet's shipyards from Republic defenders. Ongoing.
The Shroud's analysis of the Current State of the Galaxy.
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Forged Alliances
3638 BBY || 15 ATC
Assault on Tython. Republic victory. Jedi Archives razed.
Korriban Incursion. Imperial victory. Dark Council chambers razed.
Mission to Manaan. Genetics Laboratory G-1 destroyed.
Raid on Rakata Prime. Darth Arkous and Colonel Darok killed by traitors Theron Shan and Lana Beniko
The Shadow of Revan
3637 BBY || 16 ATC
The Battle of Rishi. Draw. Republic and Imperial forces temporarily cease fire to address the threat of the Order of Revan.
The Battle of Yavin 4. Order of Revan defeated. Temporary alliance between Satele Shan's and Darth Marr's personal fleets to confront Revan.
The Invasion of Ziost. Vitiate consumes all life on the planet
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3636 BBY || 17 ATC
The Invasion of Ziost Vitiate consumes all life on the planet Ziost.
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Eternal Empire Conquest
3637 BBY || 16 ATC
Sith Empire outposts in Wild Space destroyed by unknown culprits.
Knights of the Fallen Empire Chapter 1: The Hunt. First Skirmish with the Eternal Fleet. All joint-forces, including Darth Marr and Rhade and a Veteran of the Galactic War, are considered KIA.
Rhade is placed in carbonite during the Galactic War. Akaa leaves the Commonwealth angry, goes to Tatooine and takes his clan with him. The Knights of Rhade contact Akaa.
The System Commonwealth is defeated by the Zakuulan empire in Wild Space. What remains of the capital world becomes unstable and the Systems Commonwealth moves to the unknown sector.
Coruscant, Dromund Kaas, and all major trade routes are blockaded by the Eternal Fleet.
The Dark Council is practically disbanded and Supreme Chancellor Saresh is removed from office.
Emissaries, Senator Evran and Darth Vowrawn and Rufus agree to a ceasefire, imposing armament restrictions and mandatory tributes from the Republic, Systems CommonWealth and Empire to Zakuul.
The Galactic War ends. Zakuul victory.
Darth Acina declares herself Sith Empress, and Senator Madon succeeds Leontyne Saresh as Supreme Chancellor.
The Galactic Republic and Sith Empire continue to actively engage in war with one another. The Systems Commonwealth continues to rebuild.
Emperor Arcann forgoes army occupation by installing Star Fortresses over hundreds of worlds.
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3636 BBY || 17 ATC
Knights of the Fallen Empire Chapter 3: The Outlander. Lana Beniko and her team rescue the Outlander from the Spire with the help of Koth Vortena.
Knights of the Fallen Empire Chapter 4: The Gravestone. The Outlander discovers the Gravestone after crash landing in the Endless Swamp
Knights of the Fallen Empire Chapter 5: From the Grave. Senya Tirall joins the Outlander and helps their escape from the Endless Swamp.
Knights of the Fallen Empire Chapter 6: Asylum. The Outlander reaches Asylum to meet with the Scions.
Knights of the Fallen Empire Chapter 7: The Lady of Sorrows. SCORPIO joins the Outlander.
Knights of the Fallen Empire Chapter 8: Taking Flight. The Battle of Asylum. Eternal Empire victory.
Knights of the Fallen Empire Chapter 9: The Alliance. The Alliance is formed and the Outlander is named its Commander.
Knights of the Fallen Empire Chapter 10: Anarchy in Paradise. The Outlander helps Kaliyo Djannis bomb Overwatch on Zakuul before she joins the Alliance. Arcann bombards five planets to snuff out the Commander.
Knights of the Fallen Empire Chapter 11: Disavowed. Aric Jorgan and Havoc Squad join the Alliance after they wire tap a Zakuul Planetary Transmitter.
Knights of the Fallen Empire Chapter 12: Visions in the Dark. Aric and Kaliyo conduct a mission on Zakuul while the Commander consults with Satele Shan and Darth Marr
Arcann and Thexan lead raids against the Core Worlds; Korriban is the most notable world to be defeated.
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Knights of the Eternal Throne
3632 BBY || 21 ATC:
Knights of the Fallen Empire Chapter 13: Profit and Plunder. Gault Rennow and Vette help the Commander raid the Gilded Star; the spoils are used to fund the Alliance's operations.
Information obtained stating that Rhade is alive, rescue mission mounted and Emperor returned to what is left of the Commonwealth.
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3632 BBY || 21 ATC
Revolt Against the Eternal Empire
Lana Beniko, Rhade and her team attempt to rescue the Outlander from the Spire. The Outlander dies, Rhade takes control of the mission.
The Gravestone is rediscovered in the swamps of Zakuul.
Rhade meets with Heskaland the Scions of Zakuul.
Rhade allies with the Lady of Sorrows.
The Battle of Asylum.
Rhade assumes command of the Alliance after The Outlander's death then consolidates his new forces back into the weakened Commonwealth.
Raid on Overwatch. Rhade and Firebrand collect schematics of the Spire for the Commonwealth.
Joint operation between Rhade and Havoc Squad wiretaps a Zakuul Knight outpost.
Raid on the Gilded Star. Rhade empties the treasury ship of the Eternal Empire.
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3631 BBY || 22ATC
Raid on Darvannis. The Commonwealth and Mandalorian forces seize GEMINI Prime.
The GEMINI trap. The SCORPIO betrays Rhade & The Commonwealth and captures the Eternal Fleet for herself.
Battle of Odessen. Commonwealth victory. Vaylin allies with SCORPIO to take the Eternal Throne.
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3630 BBY || 23ATC
Invasion of Voss. Systems Commonwealth Victory planetside. Imperial Victory in orbit. The Empire joins the Commonwealth against Zakuul.
Assault on the Gravestone. SCORPIO takes the Gravestone and Eternal Fleet to Iokath.
Grand Festival of Empress Vaylin. Vaylin flees Zakuul. Zakuul's population turns against its Empress.
First Mission to Nathema. Vaylin breaks free from her mental conditioning.
2nd Battle of Odessen. Commonwealth Victory. Death of Vaylin.
Battle of Zakuul. Commonwealth captures the Eternal Throne and the Commonwealth is returned to power. Vitiate is finally destroyed.
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3629 BBY || 24ATC
Battle for Iokath. The Systems Commonwealth and their allies dominate the majority of Iokath. Attempted assassination of Rhade.
Crisis on Umbara. Theron Shan revealed to be the traitor.
Mission to Copero. Theron Shan escapes with location of a superweapon
Project Knightfall enacted under Imperator Blackwood.
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3628 BBY || 25ATC
The Nathema Conspiracy - Conclusion of the Theron Story-arc. Theron returns to the Commonwealth after the reveal that he staged his betrayal in order to serve the Commonwealth and obtain vital information.
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3628 BBY || 25ATC
Jedi Under Siege: The Ossus Events, The Commonwealth & Republic rushes to evacuate from Ossus as the Remnants of the Empire is preparing to attack the ancient Jedi world. Darth Malgus Returns.
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3627 BBY || 26ATC
Hearts & Minds: A discussion of recent events between the Emperor and his Council reviewing what happened on Ossus and what might come next.