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25th century

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2492 was a year in the 2490s in the 25th century.



February 19

  • A report is made on geological studies carried out on Onyx.[1]


March 19

March 21


June 4

June 7

June 9

  • Colonel Lima drops his charges of contempt and obstructing the tribunal's investigation against Cole, who is cleared of any wrongdoing.[8]

June 13


August 17

August 21


December 12

  • Inna Volkov gives birth to Ivan Troy Cole at 0445 hours. Knowing the child is not biologically his, Preston nevertheless accepts him as his son.[8]

December 16

December 22


  • A very large rebellion occurs on the colony world Far Isle, with the UNSC unable to control it. A Code: Bandersnatch is thus declared, nuclear weapons being used to put down the rebellion.[10]
  • The Covenant stumbles upon Doisac, the Jiralhanae homeworld. The Jiralhanae were just beginning to recover after warring themselves back into a pre-industrial state during the First Immolation, and were quickly forced into submission by the Covenant's superior forces, making them the final species absorbed into the alliance.[11]


  1. ^ Halo: Ghosts of Onyx, chapter 13
  2. ^ Halo 3: ODST, campaign level ONI Alpha Site
  3. ^ Halo Waypoint - Universe, Characters, Catherine Halsey (Retrieved on Jan 21, 2021) [local archive] [external archive]
  4. ^ Halo 4: The Essential Visual Guide - Characters, Campaign, page 14 (Doctor Halsey)
  5. ^ Halo Encyclopedia (2022 edition), page 90
  6. ^ Halo Waypoint - Universe, Characters, Franklin Mendez (Retrieved on Feb 25, 2021) [local archive] [external archive]
  7. ^ Halo Encyclopedia (2022 edition), page 106
  8. ^ a b c d e f g h Halo: Evolutions - The Impossible Life and the Possible Death of Preston J. Cole, section Section Three: Luna Officer Candidate School (2489-2493 CE)
  9. ^ Halo Encyclopedia (2022 edition), page 252
  10. ^ Halo: Ghosts of Onyx, chapter 21
  11. ^ Halo Encyclopedia (2009 edition) - Chapter Four: The Covenant - The History of the Covenant, page 115 (2009 edition), 121 (2011 edition)