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Hunters in the Dark full cover.jpg
A human-Sangheili force encountering morolaath during Operation: FAR STORM.

26th century

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For a complete list, see our timeline category.

2555 was a year in the 2550s in the 26th century.



January 14

  • 000 Tragic Solitude questions about the Forerunners' choice of the humans being their successors, and the galaxy repeating the same cycle over and over again, deciding to return the Installation 00 to its former glory, whatever the cost to the other races of the galaxy.[1]


March 8

  • At 0900 hours, Dr. Luther Mann discovers a timer on Installation 07 evidently counting down to the Halo's activation in five weeks. Similar countdowns are reported on the other intact Halos. It is deduced that the activation could only have been triggered from Installation 00.[2]

March 17

  • In response to the activation timer on Installation 07 being activated,[2] Operation: FAR STORM begins with a joint human-Sangheili force is sent to the Ark on a covert operation to stop the activation sequence.[3]

March 20

  • Operation: FAR STORM is completed with the deactivation of Halo's priming sequence and the destructon of 000 Tragic Solitude.[4]


May 6

  • The Office of Naval Intelligence discovers about Atriox's origins after interrogating a Sangheili prisoner.[5]


Unknown date

Unknown date[edit]