2511

2511 was a year in the 2510s in the 26th century.

January
January 3
 * All data pertaining to the planet Onyx is deemed classified.

February
February 15 February 23
 * Dr. Catherine Halsey in her journal delineates the fundamentals of the SPARTAN-II program, specifically her refinements in relation to the ORION Project.
 * Dr. Halsey learns of a terrorist with the Freedom and Liberation Party that detonated a commercial nuclear explosive in the Haven arcology, and proceeds to log this in her journal.

March
March 5 March 7 March 19
 * Jorge-052 is born in Pálháza on Reach.
 * John-117 is born on Eridanus II.
 * Linda-058 is born on Verent.

April
April 3 April 21
 * Frederic-104 is born on Ballast.
 * Douglas-042 is born on Asphodel.

May
May 4 May 8 May 16
 * Petra Janecek is born in Serif on Lenapi.
 * Jerome-092 is born on Minister.
 * Caleb-095 is born in Newport on Luyten.

July
July 10 July 17 July 30
 * Samuel-034 is born on Harvest.
 * Alice-130 is born on Passage.
 * Dr. Catherine Halsey outlines the basis of the piezoelectric mechanical enhancement of what would become the MJOLNIR Powered Assault Armor.

August
August 21
 * A terrorist associated with the Freedom and Liberation Party detonates a nuclear weapon at the Haven arcology on Mamore. The attack kills two million people and injures 8.3 million others.
 * At 8:40+0 MMT, Intersystem News reports on the terrorist attack at the Haven arcology on Mamore.

September
September 8 September 15
 * Dr. Halsey writes down her thoughts regarding the recent breakthroughs on human neural cloning in relation to the flash cloning of the SPARTAN-II candidates. She informs Vice Admiral Michael Stanforth that the project will proceed to the candidate procurement stage.
 * Naomi-010 is born on Sansar.

October
October 19 October 22
 * Kurt-051 is born in Mira on Circumstance.
 * A report is made on Forerunner artifacts that are found during routine excavations in an area designated Zone 67.

Unknown

 * Randall-037 is born in Hull, England, on Earth.
 * Jack Pilvros Hannibal tests the first small-scale quantum photonic amplifier on SATCOM relays, revolutionizing the speed and integrity of extraplanetary communications.

Circa 2511
These are events that are based around this year, and may not fall on this year specifically. Between 2510 and 2511
 * The future candidates for the SPARTAN-II program are born.