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==Events==
===February===
====February 21====
*Public commissioning of .Halo 4 Limited Edition
===June===
===June 8===
*The deploys Fireteam Apollo to the Korinth Prior system in search of the .Halo Legendary Crate - Bonus Item: Data Drop 4 - The Fire's Wake Page 1 & Page 2
====June 19====
* arrives at the remains of Installation 00 and deploys several remote contact teams (RCTs) to the surface of the Ark to investigate a strange signal.ELEVENTH HOUR Report #4: Provenance
====June 27====
*After eight days, all contact with the RCTs are severed. Only RCT-06 returns to the ship, having suffered casualties. They did recover the source of the signal though, the remains of 343 Guilty Spark.
*After being brought aboard the Rubicon, the UNSC interrogated Spark hoping to learn more about ancient human-Forerunner relations and the Ur-Didact.Halo: Primordium - pages 11-13 Spark, recognizing that these humans as "the true Reclaimers,"Halo: Primordium - page 371 proceeded to tell them about the events that led to his ancient human self, becoming a monitor.
===June 30===
*When Spark finished his story, his shell was powered down and jettisoned from the ship, as all of his data was uploaded to the ship's computer, by order of the ONI team leader. Unsuspected though, Spark overrides and disables the ship's AI and sets the course to where he thinks the Librarian is after a long study. He has need of the ship and crew and puts all of them into cryogenic sleep.Halo: Primordium - pages 376-379
===July===
====July 2–21====
*Codename: SURGEON writes and sends a five-part series of documents about the current status and operations of the post-war galaxy to Codename: COALMINER.
====July 2====
*Approximately 48 hours of radio silence from the Rubicon results in ONI sending a search and rescue team but the ship vanished.Halo Waypoint - Catalog Interaction page 14
====July 21====
*After over four years of drifting, was pulled into the gravity well of the Forerunner shield world, Requiem.Halo 4 - Levels: Dawn and Requiem
* finds Cortana's distress beacon, on the way to Requiem.Halo 4: Forward Unto Dawn
*The First Battle of Requiem begins.GameInformer - Issue May 2012
====July 24====
*The Raid on Ivanoff Research Station occurs. The Ur-Didact successfully steals the Composer from the facility and composes everyone, except John-117, in the facility.Halo 4 - Level: Composer
*The New Phoenix Incident occurs causing the city to go into quarantine for eight months.Halo 4 - Level: Midnight
====July 25====
*The Ur-Didact, after falling into a slip space portal on the Mantle's Approach, appears on Installation 03.Halo: Escalation Issue 9
*After his return to Earth, John-117 is debriefed in front of the UNSC Security Council about his encounters with the Ur-Didact and the loss of Cortana. The Council decides to cover up the attack by saying it was carried out by the Covenant Remnant and it was stopped by Master Chief.Halo: Escalation Issue 8
*Blue Team is informed of Black Team's disappearance on the surface of Installation 03 and is sent immediately to the installation.
====July 26====
*When Blue Team arrives to Installation 03, they discover the bodies of the deceased Black Team and accompanying science team. After fighting off some Prometheans, the team finds the point where the Composer originally sat on the ring and enter its crater. They find the structure known as the Composer's Abyss and follow the structure to a slip space portal that leads to a place called the Composer's Forge.
*Blue Team enters the portal to discover six extra Composers within the Forge. The Ur-Didact and his Prometheans confront the Spartans.
*The Didact asks 859 Static Carillon if he can move Installation 03 above the planet, which he does, and the Didact takes a Composer to the Installation, planning to use the ring and Composer to wipe out humanity. However, Carillon feels betrayed by the Didact as he brought his Prometheans to the Forge and instead assists Blue Team by bringing them back to the ring and closing the portal to the Composer's Forge.
*When Blue Team returns to the ring, the Didact confronts them again, nearly killing the Spartans until Carillon distracts him and teleports him to the control room. John-117 is also teleported with the Activation Index of the ring's control room. John gives the Activation Index to the monitor and lets him take control of the ring. Carillon ejects the section containing the control room into the atmosphere of the planet below. He then teleports John away.Halo: Escalation Issue 10
*Carillon moves Installation 03 to an unknown location, for repairs and safe keeping.
===Unknown===
*An expedition team travels through The Artifact to Installation 00 in the ship Eden Rising.Halo Wars 2 - Collectible: Phoenix Logs - The Ark - Henry Lamb Research Post
*The Damascus Ordnance Commission approved the "Rupitive" weapon skin for several weapons, including the MA5D Assault RifleHalo 5: Guardians - Description: Ruptive (Assault Rifle) and the BR85N Battle Rifle.Halo 5: Guardians - Description: Ruptive (Battle Rifle)
*The Alluvion Research Center is lost to the waves of the Sundark Sea on Alluvion.Halo Waypoint: Universe - Locations - Alluvion
==Battles==
*First Battle of Requiem
*Raid on Ivanoff Research Station
*New Phoenix Incident
==Creations and Births==
===December===
====December 5====
*The AI Roland is activated on Earth.Halo 4: The Essential Visual Guide – page 19
===Unknown===
*The M820 Main Battle Tank is introduced into the UNSC's arsenal.
==Losses and Deaths==
===Humans===
*Margaret-053
*Roma-143
*Otto-031
*Victor-101
*Paolo Jiminez
===List of Ships===
====Human====
* - Wreckage discovered and then destroyed Halo: Smoke and Shadow
==Sources==
Category:Timeline