2009

==Real World events==
===February===
*February 26: Halo Wars was released in Japan and Australia.
*February 27: Halo Wars was released in the PAL Region.
===March===
*March 3:
**Halo Wars was released in North America.
**Halo Wars: Official Strategy Guide was released.
===April===
*April 9: The first Mythic Map Pack was released.
*April 15: Issue 4 of the Halo: Uprising comic book series was released.
*May 19: The Strategic Options Pack for Halo Wars was released, including the game modes Reinforcements, Tug of War and Keep Away.
===June===
*June 1:
**The Halo 3: ODST Gameplay Trailer is shown at E3.
**The Halo: Reach Announcement Trailer is shown at E3.
===July===
*July 21: Historic Battle Map Pack, the first map pack for Halo Wars, was released.
*July 22: Issue 1 of the Halo: Helljumper series of comics was released.
*July 24: The Announcement Trailer for Halo Legends was released.
===August===
*August 26: Issue 2 of Halo: Helljumper was released.
===September===
*September 7: The Life was released.
*September 22:
**Halo 3: ODST, along with a copy of all Halo 3 map packs, was released, along with the second Mythic Map Pack.
**Halo 3: ODST Official Strategy Guide was released.
*September 23: Issue 3 of Halo: Helljumper was released.
===October===
*October 19: The Halo Encyclopedia was released.
*October 28: Issue 4 of Halo: Helljumper was released.
===November===
*November 5: Halo Waypoint was released.
*November 7: The Babysitter short film shown on Halo Waypoint.
*November 21: The Duel short film was shown on Halo Waypoint.
*November 24: Halo: Evolutions - Essential Tales of the Halo Universe is released.
*November 25: Issue 5 of Halo: Helljumper was released.
===December===
*December 5: The Package Part One short film was shown on Halo Waypoint.
*December 12:
**The Package Part Two was shown on Halo Waypoint.
**Halo: Reach Video Games Awards Trailer was aired live on the Spike TV Video Game Awards 2009.
*December 23: Issue 1 of the Halo: Blood Line comic series was released.
===Unknown Date===
*Halo: Chronicles was officially canceled.
==Sources==