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26th century

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For a complete list, see our timeline category.

2524 was a year in the 2520s in the 26th century.




January 3

January 18


February 28


May 22


June 12

Mid June

June 16


August 7

August 10

  • Johnson arrives in Chicago, URNA, after the botched operation on Tribute. He goes to visit his aunt Marcille, only to find that she had passed away three days ago.[10] In grief, he goes on a drinking spree. Eventually, he is found by Lieutenant Downs.[11]

August 13


September 2

September 3

  • Horn of Plentys navigation box is retrieved by Covenant forces and its contents are analyzed by the Huragok Lighter Than Some. Lighter Than Some finds the vessel's point of origin. The Covenant ship, Minor Transgression, heads off to obtain more spoils.[13]

September 16

September 18


November 17


December 21

Late December

  • The Prophet of Restraint impregnates a female San'Shyuum, despite his defective genes making it illegal for him to reproduce. With the mother refusing an abortion, a scandal starts brewing over the issue.[18]
    • Minor Transgression's crew launches a raid on the freighter This End Up, killing its captain, Henry Gibson. A while later, Sif reports the attack to al-Cygni, both realizing that it was the only ship in the area with a human crew.[19]


  • Office of the High Prophet of Restraint issues an Edict, following an incident with the Kig-Yar ship Pitiless, that teams of Unggoy and Sangheili are to search all Kig-Yar vessels for evidence of "Unclean Beings".[20]

Circa 2524[edit]

These are events that are based around this year, and may not fall on this year specifically.
Arounda year prior to the start of the Human-Covenant War


  1. ^ The journal entry is dated November 17, 2524, and Halsey writes as though the events occurred recently. However, Miranda Keyes was born February 28, 2525, which would place the date of their rendezvous in late May or early June 2524. Although Halsey often went months and even years without writing in her journal, there is another entry in August which makes no mention of the incident or her pregnancy. It is therefore possible that the date of the journal entry is anachronistic, and should be dated five months earlier.


  1. ^ Halo: Evolutions - Dirt
  2. ^ Halo: Evolutions, "Dirt", page 105 ; Volume I, page 138
  3. ^ a b Halo: Reach Limited Edition, Dr. Halsey's personal journal
  4. ^ Halo: Reach - Personnel
  5. ^ Halo Encyclopedia (2022 edition), page 98
  6. '^ Halo Waypoint - Today in Halo
  7. ^ Halo Encyclopedia (2022 edition), page 96
  8. ^ Halo: Contact Harvest, page 127
  9. ^ Contact Harvest Prologue
  10. ^ a b Halo: Contact Harvest, page 41
  11. ^ Halo: Contact Harvest, pages 37-48
  12. ^ Halo: Contact Harvest, page 23
  13. ^ Halo: Contact Harvest, pages 49-59
  14. ^ Halo: Contact Harvest, page 28
  15. ^ Halo Encyclopedia (2022 edition), page 111
  16. ^ Halo: Contact Harvest, page 60
  17. ^ Halo: Contact Harvest, page 68
  18. ^ Halo: Contact Harvest, pages 264-265
  19. ^ Halo: Contact Harvest, pages 96-104
  20. ^ Halo Wars, Timeline Events: Edict of the Office of the High Prophet of Restraint
  21. ^ Halo: New Blood, chapter 15