Halo Universe Timeline
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A chronological timeline of the Halo universe.
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LegendBirthhttp://www.reddit.com/r/halo
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Deathhttp://www.reddit.com/r/HaloStory
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Glassinghttp://www.reddit.com/u/afterbang
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Non-Canon Contenthttps://www.reddit.com/r/HaloPlayers
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Alternate Reality
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Real World Event
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Discontinuity
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YearMonthDayEventHalopedia Page (if applicable)Information OriginNotes
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500,000,000 BCEN/AN/AThe Precursors accumulated their total knowledge in a vast reserve of rules and a library of experiences.Halo: Silentium page 208"During our debate, the Gravemind hinted at a vast reserve of rules accumulated more than half a billion years ago, a huge library of experiences and disputes codified into the total wisdom of the Precursors."
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10,100,000 BCEN/AN/AApproximate time Forerunners first explored Path Kethona.http://www.halopedia.org/Path_KethonaHalo: Silentium page 58
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10,100,000 BCEN/AN/AApproximate time the Forerunner-Precursor war takes place.http://www.halopedia.org/Forerunner-Precursor_warHalo: Silentium page 181
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9,100,000BCEN/AN/AApproximate time the Primordial arrived in the galaxy.Halo: Silentium page 173"The one the Didact questioned on Charum Hakkor arrived on the margins of our galaxy nine million years before."
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1,100,000 BCEN/AN/AApproximate time Boundless passed away.http://www.halopedia.org/Boundless_(Forerunner)Halo: Silentium page 67
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1,100,000 BCEN/AN/AApproximate time the Theoretical rate was forcibly merged with the Builder rate.Halo: Silentium page 67"Soon after her death, her rate had been forcibly merged with the Builders.
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600,000 BCEN/AN/AApproximate time a Forerunner civil war takes place.Halo: Silentium page 104"During one of our interminable civil wars, half a million years before my birth..."
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150,000 BCEN/AN/AForerunners rise as the prominent species in the galaxy by advancing technological discoveries gathered from the remnants left by the Precursors.Halo Encyclopedia
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150,000 BCEN/AN/AApproximate time ancient humanity began to spread their civilization outward along the galactic arm.Halo: Cryptum page 20
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125,000 BCEN/AN/AApproximate time of the construction of the Forerunner capital.http://www.halopedia.org/CapitalHalo: Cryptum page 296
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110,962 BCEN/AN/AFaber-of-Will-and-Might is born.https://www.halowaypoint.com/en-us/universe/characters/master-builder
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110,255 BCEN/AN/AShadow-of-Sundered-Star is born.https://www.halowaypoint.com/en-us/universe/characters/didact
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110,040 BCEN/AN/AApproximate time of the discovery of The Timeless One.http://www.halopedia.org/The_Timeless_OneHalo: Primordium page 236"Forty years before the last of the Human-Forerunner wars..."
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110,000 BCEN/AN/AApproximate time the Didact spoke to the Primordial.Halo: Cryptum page 342
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110,000 BCEN/AN/AApproximate time of the discovery of the Flood powder.Halo: Cryptum page 268
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110,000 BCEN/AN/AApproximate time the Flood left the galaxy.Halo: Cryptum page 272
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110,000 BCEN/AN/AApproximate time of the beginning of the Human-Forerunner war.http://www.halopedia.org/Human-Forerunner_warHalo: Cryptum page 25
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109,000 BCEN/AN/AApproximate time the Librarian is given the title Lifeshaper.Halo: Silentium page 31"That title came to me just before I walked among the defeated humans at Charum Hakkor."
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109,000 BCEN/AN/AApproximate time of the end of the Human-Forerunner war.Halo: Cryptum page 25
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109,000 BCEN/AN/AApproximate time the Librarian established a research station on Erde-Tyrene.Halo: Cryptum page 17
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106,000 BCEN/AN/AApproximate time Bornstellar's parents are born.Halo: Cryptum page 225
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102,000 BCEN/AN/AApproximate time Maker of Moons is born.Halo: Silentium page 91"Maker was less than two thousand years old."
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101,200 BCEN/AN/AApproximate time the Confirmer began his watch over the San 'Shyuum quarantine system.Halo: Cryptum page 171
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101,100 BCEN/AN/AApproximate time the Librarian discovered a hard copy of Boundless`s studies preserved on Keth Sidon.Halo: Silentium page 67"A century before the Didact entered his Cryptum..."
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101,000 BCEN/AN/AApproximate time the Didact was found in comtempt of the council and ordered to halt the construction of his shield worlds.Halo: Silentium page 47
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101,000 BCEN/AN/AApproximate time the Didact entered a cryptum and was hidden on Erde-Tyrene.Halo: Cryptum page 81
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101,000 BCEN/AN/AApproximate time the original 12 Halos were created.Halo: Primordium page 217
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100,970BCEN/AN/AApproximate time the construction of Audacity is started.http://www.halopedia.org/AudacityHalo: Silentium page 60The construction took ten years. Permission from the Old Council to make the journey took another ten.
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100,960BCEN/AN/AApproximate time the construction of Audacity is completed.Halo: Silentium page 60The construction took ten years. Permission from the Old Council to make the journey took another ten.
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100,950BCEN/AN/AApproximate time the Old Council grants the Librarian permission to make a journey to Path Kethona.Halo: Silentium page 60The construction took ten years. Permission from the Old Council to make the journey took another ten.
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100,950 BCEN/AN/AApproximate time the Librarian visited Path Kethona.http://www.halopedia.org/Path_KethonaHalo: Silentium page 163"After she put you in a Cryptum, and stored the Cryptum on Erde-Tyrene, she commissioned a special ship, assembled a crew, and made a visit to Path Kethona. This was about nine hundred and fifty years ago."
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100,950 BCEN/AN/AApproximate time the Librarian discovers a biological Domain on a planet in Path Kethona.Halo: Silentium page 158
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100,717 BCEN/AN/AApproximate date Soma is born.Halo: Evolutions "Soma the Painter"
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100,300 BCEN/AN/AApproximate time of first contact between the Forerunner Primary Pioneer group and the Flood on G617 g1.http://www.halopedia.org/Primary_Pioneer_GroupHalo 3 Terminals (2)
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100,300 BCEN/AN/ASoma the painter sends a message to the Auditor and Prelate regarding the first landing of the Flood.Halo: Evolutions "Soma the Painter"
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100,200 BCEN/AN/AApproximate time Riser is born.Halo: Cryptum page 35
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100,043 BCEN/AN/AApproximate time 05-032 Mendicant Bias tested Installation 07 at Charum Hakkor.Halo: Primordium page 191
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100,020 BCEN/AN/AApproximate time Splendid Dust of Ancient Suns is born.Halo: Cryptum page 268
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100,020 BCEN/AN/AApproximate time Glory of a Far Dawn is born.Halo: Cryptum page 309
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100,012 BCEN/AN/AApproximate time Bornstellar Makes Eternal Lasting is born.http://www.halopedia.org/IsoDidactHalo: Cryptum page 225
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100,010 BCEN/AN/AApproximate time Maker of Moons's father is assassinated.Halo: Silentium page 90"He died ten years ago," she said. "Assassinated at the orders of the Master Builder."
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100,000 BCEN/AN/AThe Librarian visits Janjur Qom to collect San 'Shyuum specimens for cataloging.http://www.halopedia.org/Janjur_QomHalo: Cryptum page 172
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100,000 BCEN/AN/ABornstellar Makes Eternal Lasting travels to Erde-Tyrene in search of the Organon.Halo: Cryptum page 17
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100,000 BCEN/AN/AThe Didact is released from his cryptum by Bornstellar.Halo: Cryptum page 63
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100,000 BCEN/AN/AThe Didact and Bornstellar discover the ruins on Charum Hakkor.Halo: Cryptum page 102
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100,000 BCEN/AN/ABornstellar undergoes a brevet mutation with the Didact as his sponsor.Halo: Cryptum page 154
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100,000 BCEN/AN/AThe First Prophet is killed by builder forces.Halo: Cryptum page 217
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100,000 BCEN/AN/ABornstellar is sent back to his family, the Didact is taken by the Master Builder, and Chakas and Riser are send to Installation 07.Halo: Cryptum page 218See Note 11.
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100,000 BCEN/AN/AA Halo is fired for the second time in the San 'Shyuum quarantine system.Halo: Cryptum page 275
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100,000 BCEN/AN/ABornstellar departs for the Capital to testify against the Master Builder.Halo: Cryptum page 25
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100,000 BCEN/AN/AThe Battle of the Capital occurs.http://www.halopedia.org/Battle_of_the_CapitalHalo: Cryptum page 312
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100,000 BCEN/AN/AA Halo is fired for the third time at the Forerunner capital world.Halo: Primordium page 272
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100,000 BCEN/AN/ABornstellar enters a portal from the Capital to the Ark.Halo: Cryptum page 322
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100,000 BCEN/AN/ABornstellar meets the Librarian on the Ark.Halo: Cryptum page 338
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100,000 BCEN/AN/AChakas, Vinnevra, and Gamelpar discover a gravemind on Installation 07.Halo: Primordium page 150
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100,000 BCEN/AN/AChakas is reunited with Riser.Halo: Primordium page 181
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100,000 BCEN/AN/AGamelpar passes away.Halo: Primordium page 207
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100,000 BCEN/AN/AThe IsoDidact tracks down the rogue Installation 07.Halo: Primordium page 337
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100,000 BCEN/AN/AInstallation 07 breaks down from 30,000km to 10,000km in diameter.Halo: Primordium page 345
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100,000 BCEN/AN/AChakas is composed and placed in a monitor shell.Halo: Primordium page 350
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100,000 BCEN/AN/AThe Bornstellar-Didact executes the Primordial.Halo: Primordium page 366
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100,000 BCEN/AN/AThe Librarian testifies before Catalog.Halo: Silentium page 30
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100,000 BCEN/AN/AThe Ur-Didact encounters a Precursor structure.Halo: Silentium page 95
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100,000 BCEN/AN/APrecursor structures begin to reawaken around the galaxy.Halo: Silentium page 187
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100,000 BCEN/AN/AThe Ur-Didact is corrupted by a Gravemind.Halo: Silentium page 226"I am myself mad!"
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100,000 BCEN/AN/AFaber rescues the Didact from a Burn.Halo: Silentium page 192
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100,000 BCEN/AN/AThe Ur-Didact reunites with Bornstellar, the IsoDidact.Halo: Silentium page 221
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100,000 BCEN/AN/AThe Ur-Didact uses the composer on the human populations on Omega Halo.Halo 4 Terminals
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100,000 BCEN/AN/AThe Precursor structures attempt to destroy the Greater Ark. Omega Halo fires, opening a lane for the IsoDidact to escape.Halo: Silentium page 272
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100,000 BCEN/AN/AApproximate date Faber is killed in action.Halo: Silentium page 275
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100,000 BCEN/AN/AThe Librarian places the Ur-Didact in a Cryptum on Requiem.Halo 4 Terminals
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100,000 BCEN/AN/AThe Halos are sent from the Lesser Ark to be spread throughout the galaxy.Halo: Silentium page 315
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100,000 BCEN/AN/AThe Librarian passes the title of Lifeshaper on to Chant-to-Green.Halo: Silentium page 318
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100,000 BCEN/AN/AThe Librarian begins construction of a portal from Earth to the Lesser Ark.Halo: Silentium page 324
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100,000 BCEN/AN/A05-032 Mendicant Bias assembles 4.8 million Flood controlled vessels and breaches the Maginot Sphere.Halo 3 Terminals
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100,000 BCEN/AN/AOffensive Bias engages Mendicant Bias.Halo 3 Terminals
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100,000 BCEN/AN/AThe Battle of the Maginot Sphere begins.http://www.halopedia.org/Battle_of_the_Maginot_SphereHalo 3 Terminals
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100,000 BCEN/AN/AThe IsoDidact fires the Halo array killing all sentient life within 3 galactic radii.Halo 3 Terminals
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100,000 BCEN/AN/AMinutes after the array is fired, Offensive Bias' fleet decimates Mendicant Bias' fleet.Halo 3 Terminals
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100,000 BCEN/AN/AThe Battle of the Maginot Sphere ends.http://www.halopedia.org/Battle_of_the_Maginot_SphereHalo 3 Terminals
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100,000 BCEN/AN/AReseeding of the galaxy begins.Halo 3 Terminals
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97,227 BCEMayN/AA report is sent to 2401 Penitent Tangent regarding Flood containment failure in a cold storage facility.http://www.halopedia.org/Cold_Storage#TransmissionsCold Storage transmissions
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57,448 BCEN/AN/AApproximate date that a meteor bearing a small Forerunner artifact crashes on the planet that will be known as Sigma Octanus IV.http://www.halopedia.org/Sigma_Octanus_IV_artifactHalo: The Fall of Reach page 233
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40,000 BCEN/AN/AApproximate date that an unidentified alien vessel crash-landed in Sector 1215 of Installation 04.http://www.halopedia.org/Unidentified_alien_vesselHalo: CEA Terminal 5
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2200 BCEN/AN/AApproximate date the San 'Shyuum become divided into two groups, the Stoics and the Reformists.Halo: Encyclopedia
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2200 BCEN/AN/AApproximate date the San 'Shyuum civil war begins.http://www.halopedia.org/San_%27Shyuum_Civil_WarHalo: Encyclopedia
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2100 BCEN/AN/AApproximate date the San 'Shyuum civil war ends.Halo: Encyclopedia
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2100 BCEN/AN/A1,000 Reformist San 'Shyuum enter the Forerunner dreadnought and flee their homeworld.Halo: Encyclopedia
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938 BCEN/AN/AThe San 'Shyuum encounter the Sangheili on Sanghelios.Halo: Encyclopedia
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938 BCEN/AN/AThe Sangheili-San 'Shyuum war begins.http://www.halopedia.org/Sangheili-San_%27Shyuum_WarHalo: Encyclopedia
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