2491

2491 was a year in the 2490s in the 25th century.

January
January January 29 After January 29
 * 48452-556-EPN644, a member of the Assembly, submits himself for vivisection by the humans, with the intent of sparking an interest in the long-dormant Orion Project.
 * The Orion program is re-initiated.
 * Gladys Wilson volunteered for the ORION program after a year an a half of special forces, where her superior Aaron Lewis only accepted the transfer to get rid of her.

April
April 2
 * The planet Onyx is discovered and first investigated in this year.

May
May 6
 * A report is made on Onyx, the planet being recommended for colonization.

July
July 8
 * Jiralhanae Tartarus is born on Doisac.

Unknown

 * Elias Carver publishes a set of theories known as the Carver Findings.
 * The Assembly decides to have Onyx removed from the list of potential planets for colonization, due to the advanced alien technology present on the planet.
 * The M99 Stanchion presumably enters production for service within the UNSC.
 * The position of captain of the Spirit of Fire is transferred from Captain Rehkov to Captain Donald.

Circa 2491
These are events that are based around this year, and may not fall on this year specifically. Between October 25 2490 to October 23 2492
 * Rear Admiral Ned Rich is born.