From Halopedia, the Halo wiki

This page contains a timeline of canonical media, ordered by the date and time that the piece of media is set during, within the Halo universe, from earliest to latest.

Key

Video game Novel or short story Comic or graphic novel Film or TV show Trailer or marketing material Miscellaneous

Timeline

Date

2531

...
February 4 Alpha Base
(Halo Wars)
Relic Approach
(Halo Wars)
Relic Interior
(Halo Wars)
...
February 9 Arcadia City
(Halo Wars)
Arcadia Outskirts
(Halo Wars)
February 10 Dome of Light
(Halo Wars)
Scarab
(Halo Wars)
...
February 23 Anders' Signal
(Halo Wars)
Unknown date The Flood
(Halo Wars)
Shield World
(Halo Wars)
Cleansing
(Halo Wars)
Repairs
(Halo Wars)
Beachhead
(Halo Wars)
Reactor
(Halo Wars)
February 25 Escape
(Halo Wars)
...

2552

...

July

...
July 24 Noble Actual
(Halo: Reach)
Winter Contingency
(Halo: Reach)
July 25
July 26 ONI: Sword Base
(Halo: Reach)
...

August

...
August 11 Nightfall
(Halo: Reach)
August 12 Tip of the Spear
(Halo: Reach)
August 13
August 14 Long Night of Solace
(Halo: Reach)
...
August 23 Exodus
(Halo: Reach)
New Alexandria
(Halo: Reach)
...
August 29 The Package
(Halo: Reach)
August 30 The Pillar of Autumn
(Halo: Reach)
Lone Wolf
(Halo: Reach)
...

September

...
September 19 The Pillar of Autumn
(Halo: Combat Evolved)
Escape
(Halo: Fireteam Raven)
Halo
(Halo: Combat Evolved)
The Truth and Reconciliation
(Halo: Combat Evolved)
September 20 The Silent Cartographer
(Halo: Combat Evolved)
Rubble
(Halo: Fireteam Raven)
Assault on the Control Room
(Halo: Combat Evolved)
September 21 343 Guilty Spark
(Halo: Combat Evolved)
Alpha Base
(Halo: Fireteam Raven)
The Library
(Halo: Combat Evolved)
Two Betrayals
(Halo: Combat Evolved)
Ice Canyon
(Halo: Fireteam Raven)
September 22 Keyes
(Halo: Combat Evolved)
Raven Down
(Halo: Fireteam Raven)
The Maw
(Halo: Combat Evolved)
Last Stand
(Halo: Fireteam Raven)
...

October

...
October 20 The Heretic
(Halo 2)
The Armory
(Halo 2)
Cairo Station
(Halo 2)
Sadie's Story
(Halo 3: ODST)
Outskirts
(Halo 2)
Operation A: Orphic Spear and missions E-1 and E-2
(Halo: Spartan Strike)
[Note 1]
Metropolis
(Halo 2)
Prepare to Drop
(Halo 3: ODST)
Tayari Plaza
(Halo 3: ODST)
"Become the Arbiter" cutscene
(Halo 2)
Uplift Reserve
(Halo 3: ODST)
Kizingo Boulevard
(Halo 3: ODST)
ONI Alpha Site
(Halo 3: ODST)
NMPD HQ
(Halo 3: ODST)
Kikowani Station
(Halo 3: ODST)
Mombasa Streets
(Halo 3: ODST)

Data Hive
(Halo 3: ODST)
October 21
Coastal Highway
(Halo 3: ODST)
...
Unknown date The Arbiter
(Halo 2)
The Oracle
(Halo 2)
...

November

...
November 2 Delta Halo
(Halo 2)
Regret
(Halo 2)
November 3 Sacred Icon
(Halo 2)
Quarantine Zone
(Halo 2)
Gravemind
(Halo 2)
Uprising
(Halo 2)
High Charity
(Halo 2)
The Great Journey
(Halo 2)
...
November 15 Epilogue
(Halo 3: ODST)
November 16
November 17 "Finishing this Fight" cutscene
(Halo 2)
Arrival
(Halo 3)
Sierra 117
(Halo 3)
Legendary ending
(Halo 3: ODST)
Crow's Nest
(Halo 3)
Tsavo Highway
(Halo 3)
The Storm
(Halo 3)
Floodgate
(Halo 3)
...

December

...
December 11 The Ark
(Halo 3)
The Covenant
(Halo 3)
Cortana
(Halo 3)
Halo
(Halo 3)
...
Unknown date Epilogue - John-117 stranded
(Halo 3)
Legendary ending
(Halo 3)
...

2553

...
March 3 Epilogue - Voi Memorial
(Halo 3)
...

Unknown year (2553 - 2558)

...
Unknown date Prologue
(Halo 4)
...

2554

...
Unknown date Operation A: Umbra
(Halo: Spartan Assault)
[Note 1]
Operation B: Tempered Shield
(Halo: Spartan Assault)
[Note 1]
Operation C: Monolith
(Halo: Spartan Assault)
[Note 1]
Operation D: Captured Chance
(Halo: Spartan Assault)
[Note 1]
Operation E: Frostbite
(Halo: Spartan Assault)
[Note 1]
Operation F: Hydra
(Halo: Spartan Assault)
[Note 1]
...

2557

...

July

...
July 21 Dawn
(Halo 4)
Requiem
(Halo 4)
Forerunner
(Halo 4)
Infinity
(Halo 4)
Unknown date Reclaimer
(Halo 4)
Shutdown
(Halo 4)
July 24 Composer
(Halo 4)
July 25 Midnight
(Halo 4)
Epilogue
(Halo 4)
...
Unknown date Operation B: Steadfast Pursuit
(Halo: Spartan Strike)
[Note 1]
Operation E: Brother's Keeper, excluding missions E-1 and E-2
(Halo: Spartan Strike)
[Note 1]
Operation C: Valiant Hammer
(Halo: Spartan Strike)
[Note 1]
Operation D: Adamantine Shield
(Halo: Spartan Strike)
[Note 1]
...

December

...
Unknown date Non-simulation cutscenes
(Halo: Spartan Assault)
[Note 1]
Non-simulation cutscenes
(Halo: Spartan Strike)
[Note 1]
...

2558

...

February

...
February 6 Spartan Ops: Departure
(Halo 4)
February 7
February 8
February 9
February 10
Unknown date Spartan Ops: Artifact
(Halo 4)
Spartan Ops: Catherine
(Halo 4)
Spartan Ops: Didact's Hand
(Halo 4)
Spartan Ops: Memento Mori
(Halo 4)
Spartan Ops: Scattered
(Halo 4)
Spartan Ops: Invasion
(Halo 4)
Spartan Ops: Expendable
(Halo 4)
Spartan Ops: Key
(Halo 4)
Spartan Ops: Exodus
(Halo 4)
...

October

...
Unknown date Osiris
(Halo 5: Guardians)
...
October 23 Blue Team
(Halo 5: Guardians)
October 24
October 25 Glassed
(Halo 5: Guardians)
Meridian Station
(Halo 5: Guardians)
Unconfirmed
(Halo 5: Guardians)
Evacuation
(Halo 5: Guardians)
October 26 Reunion
(Halo 5: Guardians)
October 27 Swords of Sanghelios
(Halo 5: Guardians)
Anniversary Prologue
(Halo 2: Anniversary)
Anniversary Epilogue
(Halo 2: Anniversary)
Alliance
(Halo 5: Guardians)
Enemy Lines
(Halo 5: Guardians)
Before the Storm
(Halo 5: Guardians)
Battle of Sunaion
(Halo 5: Guardians)
October 28 Genesis
(Halo 5: Guardians)
The Breaking
(Halo 5: Guardians)
Guardians
(Halo 5: Guardians)
...
Unknown date Legendary ending
(Halo 5: Guardians)
...

2559

...

March

...
March 28 Legendary ending
(Halo Wars)
The Signal
(Halo Wars 2)
A New Enemy
(Halo Wars 2)
Ascension
(Halo Wars 2)
One Three Zero
(Halo Wars 2)
March 29 The Cartographer
(Halo Wars 2)
March 30 Lights Out
(Halo Wars 2)

April

April 1 From the Deep
(Halo Wars 2)
Hold the Line
(Halo Wars 2)
Under the Dark
(Halo Wars 2)
April 2 The Foundry
(Halo Wars 2)
The Halo
(Halo Wars 2)
Last Stand
(Halo Wars 2)
...

May

May 1 Operation: Spearbreaker: Gatecrashers
(Halo Wars 2)
Operation: Spearbreaker: Not on My Watch
(Halo Wars 2)
...

June

...
June 4 Awakening the Nightmare: What Could Go Wrong?
(Halo Wars 2)
Awakening the Nightmare: Fighting Retreat
(Halo Wars 2)
Unknown date Awakening the Nightmare: Light the Fuse
(Halo Wars 2)
Awakening the Nightmare: The Archive
(Halo Wars 2)
Awakening the Nightmare: Manifestation
(Halo Wars 2)

Notes

  1. ^ a b c d e f g h i j k l m The events portrayed in Halo: Spartan Assault and Halo: Spartan Strike are viewed through the lens of UNSC TACSIM simulations, and might not have actually played out exactly as depicted. The operations are listed at the dates that the events they depict actually took place, rather than when the simulations themselves were held. The simulations are listed as their own separate event.