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timeline header long new fade.jpg

Timeline

A timeline of all major events in the Halo universe from the time of the Forerunners through the rule of the Created.

Unggoy Join the Covenant
Jan
1
to Dec 31
Covenant Formation

Unggoy Join the Covenant

  • Mon, Jan 1, 2142 12:00 AM 00:00 Mon, Dec 31, 2142 11:59 PM 23:59
  • Google Calendar ICS

2142 CE

In 2142 CE, the Unggoy were discovered on their homeworld of Balaho by the Covenant and forcibly added to their list of member species.

View Event →
Jovian Moons Campaign
Mar
1
to Jun 30
Expansion Period

Jovian Moons Campaign

  • Sat, Mar 1, 2160 12:00 AM 00:00 Mon, Jun 30, 2160 10:59 PM 22:59
  • Google Calendar ICS

The Jovian Moons Campaign was a brief conflict in 2160 between the corporate-backed Friedens and the neo-communist Koslovics on several of the Jovian moons, spurred by a Frieden attack on a team of colonial advisers sent by the United Nations to help police the often violent region.

View Event →
Rainforest Wars
Feb
1
to Sep 30
Expansion Period

Rainforest Wars

  • Mon, Feb 1, 2162 12:00 AM 00:00 Fri, Sep 30, 2163 10:59 PM 22:59
  • Google Calendar ICS

The Rainforest Wars was a large-scale conflict from 2162 to 2163 between the fascist Friedens, the neo-communist Koslovics, and the forces of the United Nations on the continent of South America.

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Mars Campaign
Dec
1
to Dec 31
Expansion Period

Mars Campaign

  • Wed, Dec 1, 2162 12:00 AM 00:00 Sat, Dec 31, 2163 11:59 PM 23:59
  • Google Calendar ICS

The Mars Campaign was a retaliatory strike in December 2163 by the United Nations to eliminate the Koslovics, a rebel organizations labeled as terrorists by the UN.

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Interplanetary War
Jan
1
to Mar 31
Expansion Period

Interplanetary War

  • Sun, Jan 1, 2164 12:00 AM 00:00 Sat, Mar 31, 2170 10:59 PM 22:59
  • Google Calendar ICS

The Interplanetary War was a six-year conflict between the United Nations, neo-communists known as the Koslovics, and the corporate-backed Friedens, an movement with strong fascist roots.

View Event →
Shaw-Fujikawa Translight Engine Invented
Apr
1
to Apr 30
Colonization

Shaw-Fujikawa Translight Engine Invented

  • Wed, Apr 1, 2291 12:00 AM 00:00 Thu, Apr 30, 2291 11:59 PM 23:59
  • Google Calendar ICS

The Shaw-Fujikawa Translight Engine, informally known as an FTL drive or slipspace drive, was invented by a team of scientists led by Tobias Fleming Shaw and Wallace Fujikawa and unveiled to humanity in April 2291.

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Orion Project - First Class
Apr
12
to Dec 31
Colonization

Orion Project - First Class

  • Tue, Apr 12, 2321 11:00 PM 23:00 Thu, Dec 31, 2325 11:59 PM 23:59
  • Google Calendar ICS

The first permutation of the Orion Project, the predecessor to the future Spartan programs in the 26th century, was initiated on April 13th, 2321, consisting of five test candidates.

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Domus Diaspora
Jan
1
to Dec 31
Colonization

Domus Diaspora

  • Mon, Jan 1, 2362 12:00 AM 00:00 Sun, Dec 31, 2400 11:59 PM 23:59
  • Google Calendar ICS

The Domus Diaspora was a time period during humanity’s expansion into the galaxy that saw massive colonization efforts of hundreds of colony worlds in the span of around thirty years, starting in 2362.

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Reach is Colonized
Jun
30
to Dec 31
Colonization

Reach is Colonized

  • Sat, Jun 30, 2362 11:00 PM 23:00 Mon, Dec 31, 2362 11:59 PM 23:59
  • Google Calendar ICS

The colony world of Reach, the first ever extrasolar colony established by humanity, was colonized sometime in 2362 by the colony ship Odyssey.

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Arcadia is Colonized
Jan
1
to Dec 31
Colonization

Arcadia is Colonized

  • Mon, Jan 1, 2429 12:00 AM 00:00 Mon, Dec 31, 2429 11:59 PM 23:59
  • Google Calendar ICS

The colony world of Arcadia, one of the many outer worlds to be colonized in the 25th century, was settled sometime in 2429.

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Meridian is Colonized
Jan
1
to Dec 31
Colonization

Meridian is Colonized

  • Wed, Jan 1, 2431 12:00 AM 00:00 Wed, Dec 31, 2431 11:59 PM 23:59
  • Google Calendar ICS

The colony world of Meridian, a moon orbiting Hestia V in the Hestia system, was an outer colony world colonized sometime in 2431.

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Unggoy Rebellion
Jan
1
to Dec 31
Covenant Formation

Unggoy Rebellion

  • Sun, Jan 1, 2462 12:00 AM 00:00 Sun, Dec 31, 2462 11:59 PM 23:59
  • Google Calendar ICS

2462 CE

Following years of abuse of Unggoy at the hands of the Kig-Yar culminating in the sterilization of thousands via poisoning, the Unggoy Rebellion began in 2462 to protest their treatment by the Kig-Yar and the Covenant as a whole.

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Harvest is Colonized
Jan
1
to Dec 30
Colonization

Harvest is Colonized

  • Sun, Jan 1, 2468 12:00 AM 00:00 Sun, Dec 30, 2468 11:59 PM 23:59
  • Google Calendar ICS

The outer colony world of Harvest, one of the youngest human colonies, was settled sometime in 2468.

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First Immolation
Jan
1
to Dec 31
Covenant Formation

First Immolation

  • Wed, Jan 1, 2470 12:00 AM 00:00 Tue, Dec 31, 2480 11:59 PM 23:59
  • Google Calendar ICS

~2470 - 2480 CE

Sometime prior to the Jiralhanae’s inclusion into the Covenant in 2492, a decade-long civil war known as the First Immolation devastated the Brute homeworld of Doisac and reduced the Jiralhanae society to pre-industrial technologies.

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Carver Findings
Jan
1
to Dec 31
Insurrection, Pre-war Period

Carver Findings

  • Mon, Jan 1, 2491 12:00 AM 00:00 Mon, Dec 31, 2491 11:59 PM 23:59
  • Google Calendar ICS

In 2491, Doctor Elias Carver published a series of findings regarding the possibility of insurrection in the outer colonies.

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Orion Project - Second Class
Jan
29
to Dec 31
Insurrection, Pre-war Period

Orion Project - Second Class

  • Mon, Jan 29, 2491 12:00 AM 00:00 Fri, Dec 31, 2506 11:59 PM 23:59
  • Google Calendar ICS

In 2491, the Office of Naval Intelligence re-instituted the Orion Project, an attempt to create engineered super-soldiers to boost combat effectiveness.

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Far Isle Rebellion
Jan
1
to Dec 31
Insurrection, Pre-war Period

Far Isle Rebellion

  • Tue, Jan 1, 2492 12:00 AM 00:00 Wed, Dec 31, 2492 11:59 PM 23:59
  • Google Calendar ICS

The Far Isle Rebellion was a major uprising on the outer colony world of Far Isle in 2492 that is largely cited in spurring the Insurrection.

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Jiralhanae Join the Covenant
Jan
1
to Dec 31
Covenant Formation

Jiralhanae Join the Covenant

  • Tue, Jan 1, 2492 12:00 AM 00:00 Wed, Dec 31, 2492 11:59 PM 23:59
  • Google Calendar ICS

2492 CE

In 2492, soon after the end of a devastating civil war between Jiralhanae that caused a total collapse in Jiralhanae society, the Covenant visited the Brute homeworld of Doisac and invited them to join.

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Callisto Incident
Jan
1
to Mar 2
Insurrection, Pre-war Period

Callisto Incident

  • Fri, Jan 1, 2494 12:00 AM 00:00 Tue, Mar 2, 2494 11:59 PM 23:59
  • Google Calendar ICS

The Callisto Incident was a series of events involving the UNSC Callisto that is considered the first true insurrectionist attack from January to March 2494. 

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NO TIMELINE ENTRIES (YET)
Mar
7
12:00 AM00:00

NO TIMELINE ENTRIES (YET)

  • Saturday, March 7, 2511
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

This lore entry does not have any timeline entries associated with it… Yet.

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Operation: TREBUCHET
Jan
21
to Feb 3
Insurrection, Pre-war Period

Operation: TREBUCHET

  • Sat, Jan 21, 2513 12:00 AM 00:00 Sat, Feb 3, 2525 11:59 PM 23:59
  • Google Calendar ICS

Operation: TREBUCHET was a twelve-year UNSC operation to quell growing unrest and insurrectionist activities in the outer colonies from 2513 until the start of the Human-Covenant War in 2525.

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Spartan-II Training Program
Jul
20
to Mar 30
Insurrection, Pre-war Period, Spartan Programs

Spartan-II Training Program

  • Tue, Jul 20, 2517 11:00 PM 23:00 Fri, Mar 30, 2525 10:59 PM 22:59
  • Google Calendar ICS

The Spartan II program, led by Dr. Catherine Halsey, was a plan by the Office of Naval Intelligence to use children with superior genetic traits to create a group of super-soldiers in order to put an end to the ongoing Insurrection in the outer colonies. 

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First Battle of Harvest
Feb
3
to Feb 23
Human-Covenant War

First Battle of Harvest

  • Sat, Feb 3, 2525 12:00 AM 00:00 Fri, Feb 23, 2525 11:59 PM 23:59
  • Google Calendar ICS

The First Battle of Harvest was humanity's first contact with the Covenant on the planet Harvest in the Epsilon Indi system and the subsequent destruction of the entire colony.

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Operation: TALON
Sep
13
11:00 PM23:00
Insurrection, Pre-war Period

Operation: TALON

  • Thursday, September 13, 2525
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

On their first mission as fully augmented Spartan-IIs, Blue Team, consisting of John-117, Samuel-034, Linda-058, Kelly-087, and Fred-104, infiltrate Eridanus Secundus, a hidden United Rebel Front base located in an asteroid field, and capture Colonel Watts.

View Event →
Battle of Chi Ceti
Nov
27
5:50 PM17:50
Human-Covenant War

Battle of Chi Ceti

  • Tuesday, November 27, 2525
  • 5:50 PM 11:59 PM 17:50 23:59
  • Google Calendar ICS

The Battle of Chi Ceti was a battle between the UNSC Commonwealth and the Covenant vessel Unrelenting in the Chi Ceti system on November 27th, 2525.

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Battle of Alpha Corvi II
Dec
3
12:00 AM00:00
Human-Covenant War

Battle of Alpha Corvi II

  • Monday, December 3, 2525
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of Alpha Corvi II was a battle between the UNSC and the Covenant forces in the Alpha Corvi system on December 3rd, 2525.

View Event →
Battle of Bliss
Feb
13
12:00 AM00:00
Human-Covenant War

Battle of Bliss

  • Wednesday, February 13, 2526
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of Bliss was a Covenant attack on the outer colony world of Bliss on February 13th, 2526.

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Second Battle of Harvest
Mar
1
12:00 AM00:00
Human-Covenant War

Second Battle of Harvest

  • Friday, March 1, 2526
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Second Battle of Harvest, also known as just simply the Battle of Harvest, was humanities first attempt to recover the planet Harvest from the Covenant, who wiped out the existing colony and killed tens of thousands of civilians a year earlier.

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Harvest Campaign
Mar
1
to Feb 4
Human-Covenant War

Harvest Campaign

  • Fri, Mar 1, 2526 12:00 AM 00:00 Sun, Feb 4, 2531 11:59 PM 23:59
  • Google Calendar ICS

The Harvest Campaign was a five-year campaign to retake the planet Harvest after the Covenant took over the planet and wiped out the colony on Harvest.

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Operation: SILENT STORM
Mar
8
to Apr 25
Human-Covenant War

Operation: SILENT STORM

  • Fri, Mar 8, 2526 12:00 AM 00:00 Thu, Apr 25, 2526 10:59 PM 22:59
  • Google Calendar ICS

Operation: SILENT STORM was a UNSC operation to use EVA tactics to infiltrate Covenant vessels and either capture or destroy them from within early in the Human-Covenant War in March and April 2526.

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WINTER CONTINGENCY is Created
Mar
10
12:00 AM00:00
Human-Covenant War

WINTER CONTINGENCY is Created

  • Sunday, March 10, 2526
  • 12:00 AM 12:59 AM 00:00 00:59
  • Google Calendar ICS

WINTER CONTINGENCY was a UNSC emergency plan directive that was declared whenever it was determined the Covenant had learned the location of a colony world.

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Battle of Biko
Mar
25
to Mar 31
Human-Covenant War

Battle of Biko

  • Mon, Mar 25, 2526 11:00 PM 23:00 Sun, Mar 31, 2526 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Biko was a Covenant Invasion on the colony world of Biko in March 2526.

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Battle of Circinius IV
Apr
25
11:00 PM23:00
Human-Covenant War

Battle of Circinius IV

  • Thursday, April 25, 2526
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Circinius IV was a Covenant attack on the planet Circinius IV and Corbulo Military Academy located on the planet.

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Battle of Mesra
May
27
to Jun 5
Human-Covenant War

Battle of Mesra

  • Mon, May 27, 2526 11:00 PM 23:00 Wed, Jun 5, 2526 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Mesra was a Covenant attack on the human outer colony world of Mesra in late May to early June 2526.

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Battle of Netherop
Jun
5
to Jun 30
Human-Covenant War

Battle of Netherop

  • Wed, Jun 5, 2526 11:00 PM 23:00 Sun, Jun 30, 2526 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Netherop was a conflict between UNSC forces led by Spartan-II Blue Team and Covenant forces on the uninhabited hothouse world in June 2526.

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Battle of Alpha Aurigae
Oct
21
12:00 AM00:00
Human-Covenant War

Battle of Alpha Aurigae

  • Monday, October 21, 2526
  • 12:00 AM 10:59 PM 00:00 22:59
  • Google Calendar ICS

The Battle of Alpha Aurigae was a large naval battle between UNSC and Covenant forces in the Origami Asteroid Field of the Alpha Aurigae system, culminating in a UNSC victory. 

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Battle of XI Boötis A
Feb
13
12:00 AM00:00
Human-Covenant War

Battle of XI Boötis A

  • Friday, February 13, 2528
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of XI Boötis A was a naval battle during the early portions of the Human-Covenant War.

View Event →
Fall of Madrigal
Dec
5
to Dec 10
Human-Covenant War

Fall of Madrigal

  • Sun, Dec 5, 2528 12:00 AM 00:00 Fri, Dec 10, 2528 11:59 PM 23:59
  • Google Calendar ICS

The Fall of Madrigal was an early battle in the Human-Covenant War, occurring on and around the planet Madrigal in the 23 Librae system.

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Battle of Hat Yai
Jan
1
to Jan 3
Human-Covenant War

Battle of Hat Yai

  • Sat, Jan 1, 2529 12:00 AM 00:00 Mon, Jan 3, 2529 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Hat Yai was a battle early in the Human-Covenant War that took place between late 2528 and early 2529.

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Battle of Asmara
Feb
1
to Feb 3
Human-Covenant War

Battle of Asmara

  • Tue, Feb 1, 2529 12:00 AM 00:00 Thu, Feb 3, 2529 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Asmara was a battle on and around the planet Asmara between late 2528 and 2529.

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Glassing of Eridanus II
Jan
1
to Jan 3
Human-Covenant War

Glassing of Eridanus II

  • Sun, Jan 1, 2530 12:00 AM 00:00 Tue, Jan 3, 2530 11:59 PM 23:59
  • Google Calendar ICS

Sometime in 2530 the colony world of Eridanus II, home world of John-117, was glassed by an unknown Covenant force.

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Battle of the Great Bear
Dec
24
12:00 AM00:00
Human-Covenant War

Battle of the Great Bear

  • Sunday, December 24, 2530
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of the Great Bear was a naval battle between a UNSC fleet of seventeen warships and three Covenant warships in the Groombridge-1830 system.

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Battle for Arcadia
Feb
9
to Feb 10
Human-Covenant War

Battle for Arcadia

  • Fri, Feb 9, 2531 12:00 AM 00:00 Sat, Feb 10, 2531 11:59 PM 23:59
  • Google Calendar ICS

The Battle for Arcadia was a battle for the colony Arcadia in the Procyon system, which occurred in the immediate aftermath of the Harvest Campaign.

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Battle of the Etran Harborage
Feb
23
to Feb 25
Human-Covenant War

Battle of the Etran Harborage

  • Fri, Feb 23, 2531 12:00 AM 00:00 Sun, Feb 25, 2531 11:59 PM 23:59
  • Google Calendar ICS

The Battle of the Etran Harborage was a battle between the UNSC Spirit of Fire and Covenant forces lead by Arbiter Ripa 'Moramee on Shield World 0459, also known as the Etran Harborage.

View Event →
Operation: SMOKING ACES
May
1
12:00 AM00:00
Insurrection, Mid-war Period

Operation: SMOKING ACES

  • Tuesday, May 1, 2531
  • 12:00 AM 10:58 PM 00:00 22:58
  • Google Calendar ICS

Operation: SMOKING ACES was a raid by Spartan-II Blue Team on an Insurrection stronghold in the 111 Tauri system.

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Spartan-III Alpha Company Training Program
Dec
27
to Nov 30
Human-Covenant War, Spartan Programs

Spartan-III Alpha Company Training Program

  • Thu, Dec 27, 2531 12:00 AM 00:00 Fri, Nov 30, 2536 12:59 AM 00:59
  • Google Calendar ICS

Spartan-III Alpha company was the first of three Spartan-III companies to be recruited, trained, and put into service.

View Event →
Battle of Vodin
Jan
1
to Jan 14
Human-Covenant War

Battle of Vodin

  • Tue, Jan 1, 2532 12:00 AM 00:00 Mon, Jan 14, 2532 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Vodin was a Covenant invasion of the colony world of Vodin sometime in 2532.

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Cole Protocol is Established
Jan
1
to Feb 28
Human-Covenant War

Cole Protocol is Established

  • Sat, Jan 1, 2535 12:00 AM 00:00 Mon, Feb 28, 2535 11:59 PM 23:59
  • Google Calendar ICS

In an effort to limit the ability for the Covenant to discover human colonies, including the inner colonies and Earth, the Cole Protocol was established to wipe all ship navigation data when the UNSC came into contact with any Covenant forces.

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Battle of Jericho VII
Feb
9
to Feb 12
Human-Covenant War

Battle of Jericho VII

  • Wed, Feb 9, 2535 12:00 AM 00:00 Sat, Feb 12, 2535 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Jericho VII was a three-day naval and ground battle pitting the UNSC versus the Covenant forces in the Lambda Serpentis system.

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Battle of Charybdis IX
Mar
1
to Mar 4
Human-Covenant War

Battle of Charybdis IX

  • Tue, Mar 1, 2535 12:00 AM 00:00 Fri, Mar 4, 2535 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Charybdis IX was a Covenant assault on the planet Charybdis IX in the Charybdis system sometime in 2535, prior to the Battle of the Rubble.

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Battle of the Rubble
Mar
7
to Mar 31
Human-Covenant War

Battle of the Rubble

  • Mon, Mar 7, 2535 12:00 AM 00:00 Thu, Mar 31, 2535 10:59 PM 22:59
  • Google Calendar ICS

The Battle of the Rubble was a battle that took place in the 23 Librae system on a grouping of Lagrangian asteroids trailing Hesiod, a gas giant in the system, some time around 2535.

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Battle of Metisette
Mar
31
to Apr 3
Human-Covenant War

Battle of Metisette

  • Thu, Mar 31, 2535 11:00 PM 23:00 Sun, Apr 3, 2535 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Metisette occurred in the immediate aftermath of the Battle of the Rubble in 2535, taking place on Metisette, the nearby moon of the gas giant Hesiod.

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Battle of Leonis Minoris
Jan
1
to Jan 14
Human-Covenant War

Battle of Leonis Minoris

  • Tue, Jan 1, 2537 12:00 AM 00:00 Mon, Jan 14, 2537 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Leonis Minoris was a battle between Covenant and UNSC forces in the Leonis Minoris system sometime in 2537.

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Battle of New Harmony
Apr
30
to May 3
Human-Covenant War

Battle of New Harmony

  • Tue, Apr 30, 2537 11:00 PM 23:00 Fri, May 3, 2537 10:59 PM 22:59
  • Google Calendar ICS

The Battle of New Harmony was an assault on the colony New Harmony by Covenant forces in early 2537.

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Battle of New Constantinople
May
31
to Jun 3
Human-Covenant War

Battle of New Constantinople

  • Fri, May 31, 2537 11:00 PM 23:00 Mon, Jun 3, 2537 10:59 PM 22:59
  • Google Calendar ICS

The Battle of New Constantinople was a large conflict between UNSC and Covenant forces that took place some time in early 2537 on the colony of New Constantinople.

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Operation: PROMETHEUS
Jul
26
to Aug 2
Human-Covenant War

Operation: PROMETHEUS

  • Fri, Jul 26, 2537 11:00 PM 23:00 Fri, Aug 2, 2537 10:59 PM 22:59
  • Google Calendar ICS

Operation: PROMETHEUS was an assault on a Covenant shipyard located on and around asteroid K7-49 by Spartan-III Alpha Company.

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Battle of Camber
Jan
1
to Jan 7
Human-Covenant War

Battle of Camber

  • Wed, Jan 1, 2538 12:00 AM 00:00 Tue, Jan 7, 2538 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Camber was an invasion of the colony world of Camber sometime between 2535 and 2552.

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Battle of Kholo
Jan
1
to Jan 7
Human-Covenant War

Battle of Kholo

  • Thu, Jan 1, 2539 12:00 AM 00:00 Wed, Jan 7, 2539 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Kholo was a Covenant assault on the human colony world of Kholo sometime in 2539. 

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Spartan-III Beta Company Training Program
Jan
1
to Jan 1
Human-Covenant War, Spartan Programs

Spartan-III Beta Company Training Program

  • Thu, Jan 1, 2539 12:00 AM 00:00 Fri, Jan 1, 2545 11:59 PM 23:59
  • Google Calendar ICS

Spartan-III Beta company was the second of three Spartan-III companies to be recruited, trained, and put into service.

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Operation: GREY VEIL
Jun
30
11:00 PM23:00
Human-Covenant War

Operation: GREY VEIL

  • Friday, June 30, 2541
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

Operation: GREY VEIL was an Office of Naval Intelligence mission to assassinate a Covenant Prophet on the planet Heian sometime in 2541.

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Battle for Alluvion
Jan
1
to Jan 26
Human-Covenant War

Battle for Alluvion

  • Mon, Jan 1, 2542 12:00 AM 00:00 Fri, Jan 26, 2542 11:59 PM 23:59
  • Google Calendar ICS

The Battle for Alluvion was a major conflict in the Human-Covenant War that took place in the Bhaakto system some time in 2542.

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Battle of Psi Serpentis
Apr
10
to Apr 18
Human-Covenant War

Battle of Psi Serpentis

  • Wed, Apr 10, 2543 11:00 PM 23:00 Thu, Apr 18, 2543 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Psi Serpentis was a major conflict between a UNSC fleet of 162 warships led by the UNSC Everest and Admiral Preston Cole and two fleets of Covenant warships totaling over 300 ships in the Psi Serpentis system in April 2543.

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Battle of Miridem
Jan
1
to Jan 18
Human-Covenant War

Battle of Miridem

  • Wed, Jan 1, 2544 12:00 AM 00:00 Sat, Jan 18, 2544 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Miridem was an engagement between human and Covenant forces on and around the colony of Miridem.

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UNSC Infinity Construction
Jan
1
to Feb 21
Post-war Period

UNSC Infinity Construction

  • Wed, Jan 1, 2544 12:00 AM 00:00 Mon, Feb 21, 2557 11:59 PM 23:59
  • Google Calendar ICS

The flagship of the UNSC Navy and the first Infinity-class supercarrier ever constructed, the UNSC Infinity is the largest single human warship ever constructed, with a crew of over 17,000.

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Operation: WARM BLANKET
Jan
20
12:00 AM00:00
Human-Covenant War

Operation: WARM BLANKET

  • Monday, January 20, 2544
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

Operation: WARM BLANKET was an operation to recover Doctor Halsey from the Covenant after her capture during the Battle of Miridem in 2544.

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Operation: IRON FIST
Jan
21
to Jan 23
Human-Covenant War

Operation: IRON FIST

  • Tue, Jan 21, 2544 12:00 AM 00:00 Thu, Jan 23, 2544 11:59 PM 23:59
  • Google Calendar ICS

Operation: IRON FIST was a military operation on the colony of Miridem after the Battle of Miridem in 2544 and prior to the colony's glassing.

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Spartan-III Gamma Company Training Program
Jan
1
to Oct 24
Human-Covenant War, Spartan Programs

Spartan-III Gamma Company Training Program

  • Fri, Jan 1, 2545 12:00 AM 00:00 Tue, Oct 24, 2552 10:59 PM 22:59
  • Google Calendar ICS

Spartan-III Gamma Company was the last of three Spartan-III companies to be recruited, trained, and put into service.

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Invasion of Draco III
Jan
10
to Jan 27
Human-Covenant War

Invasion of Draco III

  • Sun, Jan 10, 2545 12:00 AM 00:00 Wed, Jan 27, 2545 11:59 PM 23:59
  • Google Calendar ICS

The Invasion of Draco III was a Covenant attack on the colony world of Draco III in January 2545.

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Battle of Actium
Apr
30
to May 18
Human-Covenant War

Battle of Actium

  • Fri, Apr 30, 2545 11:00 PM 23:00 Tue, May 18, 2545 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Actium was an invasion by Covenant forces on the colony world Actium in May 2545.

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Operation: TORPEDO
Jul
2
11:00 PM23:00
Human-Covenant War

Operation: TORPEDO

  • Friday, July 2, 2545
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

Operation: TORPEDO was a mission by Spartan-III Beta Company to infiltrate and destroy a Covenant refinery on Pegasi Delta, the moon of 51 Pegasi B in the 51 Pegasi system.

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Battle of New Llanelli
Jan
1
to Jan 7
Human-Covenant War

Battle of New Llanelli

  • Sat, Jan 1, 2546 12:00 AM 00:00 Fri, Jan 7, 2546 11:59 PM 23:59
  • Google Calendar ICS

The Battle of New Llanelli was an engagement between UNSC and Covenant forces on the colony world of New Llanelli in the Brunel system, sometime in 2546.

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Battle of Sargasso
Sep
20
11:00 PM23:00
Human-Covenant War

Battle of Sargasso

  • Tuesday, September 20, 2546
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Sargasso was a conflict between invading Covenant and defending UNSC forces on the colony of Sargasso on September 21st, 2546. 

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Battle of Skopje
Jan
1
to Jan 7
Human-Covenant War

Battle of Skopje

  • Sun, Jan 1, 2547 12:00 AM 00:00 Sat, Jan 7, 2547 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Skopje was a conflict between the Covenant and UNSC forces on the colony world of Skopje, sometime in 2547.

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Spartan-II Program Goes Public
May
20
11:00 PM23:00
Human-Covenant War, Spartan Programs

Spartan-II Program Goes Public

  • Saturday, May 20, 2547
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

In an effort to boost morale, the Office of Naval Intelligence made public the existence of the Spartan-II program and the accomplishments of the Spartan-IIs in May, 2547.

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Battle of Meridian
Jan
1
to Jan 31
Human-Covenant War

Battle of Meridian

  • Mon, Jan 1, 2548 12:00 AM 00:00 Sun, Jan 31, 2551 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Meridian was a three-year conflict between the Covenant and UNSC forces on and around the colony world of Meridian, a moon around Hestia V in the Hestia system, between 2548 and 2551.

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Siege of Paris IV
Jan
1
to Jan 14
Human-Covenant War

Siege of Paris IV

  • Wed, Jan 1, 2549 12:00 AM 00:00 Tue, Jan 14, 2549 11:59 PM 23:59
  • Google Calendar ICS

The Siege of Paris IV was a major battle between the UNSC and Covenant forces on and around the colony of Paris IV in the Paris system in 2549.

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Algolis Invasion
Mar
1
to Mar 7
Human-Covenant War

Algolis Invasion

  • Sat, Mar 1, 2549 12:00 AM 00:00 Fri, Mar 7, 2549 11:59 PM 23:59
  • Google Calendar ICS

The Algolis Invasion was a Covenant attack on the human colony world of Algolis in the Algol system sometime between 2548 and 2552.

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Fall of Arcadia
Sep
8
to Sep 22
Human-Covenant War

Fall of Arcadia

  • Mon, Sep 8, 2549 11:00 PM 23:00 Mon, Sep 22, 2549 10:59 PM 22:59
  • Google Calendar ICS

The Fall of Arcadia, also known as the Second Fall of Arcadia, was a Covenant invasion and subsequent loss of the colony world of Arcadia in the Procyon system on September 9th 2549.

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Battle of Gamma Pavonis VII
Mar
1
12:00 AM00:00
Human-Covenant War

Battle of Gamma Pavonis VII

  • Sunday, March 1, 2550
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of Gamma Pavonis VII was a small skirmish over the planet of Gamma Pavonis VII in the Gamma Pavonis system in early 2550.

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Glassing of Minab
May
31
11:00 PM23:00
Human-Covenant War

Glassing of Minab

  • Sunday, May 31, 2550
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Glassing of Minab was a Covenant attack on the outer colony world of Minab in 2550.

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Defense of Concord
Dec
6
12:00 AM00:00
Human-Covenant War

Defense of Concord

  • Monday, December 6, 2551
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Defense of Concord was an attack by an unknown Covenant force on the colony of Concord, sometime in 2551.

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Battle of Ballast
Jan
1
12:00 AM00:00
Human-Covenant War

Battle of Ballast

  • Saturday, January 1, 2552
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of Ballast was a conflict between Covenant and UNSC forces on and around the colony of Ballast in 2551 or 2552.

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Operation: FIRESIDE
Jan
8
12:00 AM00:00
Human-Covenant War

Operation: FIRESIDE

  • Saturday, January 8, 2552
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

Operation: FIRESIDE was an ODST mission to investigate a distress call sent by civilians on the colony world of Ariel, which had come under attack by Covenant forces days earlier in late December 2551 or early January 2552. 

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Battle of Fumirole
Apr
21
11:00 PM23:00
Human-Covenant War

Battle of Fumirole

  • Friday, April 21, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Fumirole was a conflict between Covenant and UNSC forces on the colony Fumirole, April 22nd, 2552.

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Battle of Beta Eridani
Apr
30
11:00 PM23:00
Human-Covenant War

Battle of Beta Eridani

  • Sunday, April 30, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Beta Eridani was a Covenant assault on UNSC forces in the Beta Eridani system, shortly before the summer in 2552. 

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Massacre of Troy
May
7
11:00 PM23:00
Human-Covenant War

Massacre of Troy

  • Sunday, May 7, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Massacre of Troy was a Covenant invasion of the colony of Troy in the Hellespont system approximately five months prior to the Battle for Earth.

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Battle of New Jerusalem
Jun
30
to Jul 31
Human-Covenant War

Battle of New Jerusalem

  • Fri, Jun 30, 2552 11:00 PM 23:00 Mon, Jul 31, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Battle of New Jerusalem was a Covenant attack on the colony of New Jerusalem in the Cygnus system sometime in July or August 2552. 

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Operation: RED FLAG
Jun
30
to Nov 3
Human-Covenant War

Operation: RED FLAG

  • Fri, Jun 30, 2552 11:00 PM 23:00 Fri, Nov 3, 2552 10:59 PM 22:59
  • Google Calendar ICS

Operation: RED FLAG was a planned operation by both the Office of Naval Intelligence and the UNSC to use Spartans to capture a Covenant ship, use it to penetrate into Covenant space, and capture a Hierarch, with the intent of using the Prophet to broker a cease-fire.

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Battle of Sigma Octanus IV
Jul
16
to Jul 18
Human-Covenant War

Battle of Sigma Octanus IV

  • Sun, Jul 16, 2552 11:00 PM 23:00 Tue, Jul 18, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Sigma Octanus IV was a large-scale space and ground battle between UNSC and Covenant forces in the Sigma Octanus system in July 2552. 

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Fall of Reach
Jul
24
to Aug 30
Human-Covenant War

Fall of Reach

  • Mon, Jul 24, 2552 11:00 PM 23:00 Wed, Aug 30, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Fall of Reach was possibly the largest battle during the Human-Covenant War, taking place in the Epsilon Eridani system, in orbit and on the ground of Reach, humanity's largest military stronghold.

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Raid on Verge
Jul
25
to Jul 31
Human-Covenant War

Raid on Verge

  • Tue, Jul 25, 2552 11:00 PM 23:00 Mon, Jul 31, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Raid on Verge was a covert mission undertaken by Spartan-II Black Team to infiltrate and destroy a Covenant mining and refinery operation on the recently invaded former colony of Verge towards the end of July 2552. 

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Battle of Line Installation 1-4
Jul
31
to Aug 3
Human-Covenant War

Battle of Line Installation 1-4

  • Mon, Jul 31, 2552 11:00 PM 23:00 Thu, Aug 3, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Line Installation 1-4 was a conflict on Line Installation 1-4, a Forerunner defensive facility that was part of the Jat-Krula, the Forerunner's version of the Maginot Line during the Forerunner-Flood war in August 2552.

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Battle of Tribute
Aug
14
to Nov 2
Human-Covenant War

Battle of Tribute

  • Mon, Aug 14, 2552 11:00 PM 23:00 Thu, Nov 2, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Tribute was a large-scale invasion of the colony world Tribute in the Epsilon Eridani system by Covenant forces during and after the Fall of Reach in 2552.

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Massacre at Eridanus Secundus
Sep
9
11:00 PM23:00
Human-Covenant War

Massacre at Eridanus Secundus

  • Saturday, September 9, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Massacre at Eridanus Secundus was a Covenant attack on a rebel facility within a series of asteroids in the Eridanus system in late 2552.

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Operation: FIRST STRIKE
Sep
12
11:00 PM23:00
Human-Covenant War

Operation: FIRST STRIKE

  • Tuesday, September 12, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

Operation: FIRST STRIKE was a mission undertaken by John-117 and several other Spartan-IIs to infiltrate and destroy the Covenant space station Unyielding Hierophant and associated armada of over 500 warships in the Tau Ceti system prior to the Covenant's invasion of Earth.

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Battle of Installation 04
Sep
19
to Sep 22
Human-Covenant War

Battle of Installation 04

  • Tue, Sep 19, 2552 12:00 AM 00:00 Fri, Sep 22, 2552 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Installation 04 was an engagement between the UNSC Pillar of Autumn and the Covenant Fleet of Particular Justice on and around the Forerunner megastructure known as Installation 04, or Alpha Halo, in the Soell system.

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Battle for Earth
Oct
20
to Dec 3
Human-Covenant War

Battle for Earth

  • Fri, Oct 20, 2552 12:00 AM 00:00 Sun, Dec 3, 2552 11:59 PM 23:59
  • Google Calendar ICS

The Battle for Earth was a large-scale space, air, and ground battle between the invading Covenant forces and the UNSC Home Fleet on and around Earth at the end of 2552.

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Skirmish on Mona Lisa
Oct
24
11:00 PM23:00
Human-Covenant War

Skirmish on Mona Lisa

  • Tuesday, October 24, 2552
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Skirmish on Mona Lisa was a minor conflict that occurred in the debris field of Installation 04 in the Soell system aboard the prison ship Mona Lisa between UNSC forces and an outbreak of the Flood on October 25th, 2552.

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Onyx Conflict
Oct
30
to Nov 3
Human-Covenant War

Onyx Conflict

  • Mon, Oct 30, 2552 11:00 PM 23:00 Fri, Nov 3, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Onyx Conflict was a major engagement between UNSC, Covenant, and Forerunner forces on and around the planet of Onyx in the Zeta Doradus system in October and November 2552.

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Battle of Installation 05
Nov
1
to Nov 4
Human-Covenant War

Battle of Installation 05

  • Wed, Nov 1, 2552 11:00 PM 23:00 Sat, Nov 4, 2552 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Installation 05 was an engagement between the Covenant forces, including those that fled the Battle for Earth, High Charity, and the Second Fleet of Homogeneous Clarity, and the UNSC-allied forces, including the UNSC In Amber Clad led by Miranda Keyes, and the Fleet of Retribution led by the Arbiter Thel 'Vadam.

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Great Schism
Nov
2
to Oct 27
Human-Covenant War, Great Schism

Great Schism

  • Thu, Nov 2, 2552 11:00 PM 23:00 Fri, Oct 27, 2558 10:59 PM 22:59
  • Google Calendar ICS

The Great Schism was a conflict between the forces loyal to the Covenant, led mostly by the Jiralhanae, and the Sangheili, beginning on November 3rd, 2552 and continuing off and on until the Rule of the Created in 2558.

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Battle of Installation 00
Dec
11
12:00 AM00:00
Human-Covenant War

Battle of Installation 00

  • Monday, December 11, 2552
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Battle of Installation 00 was a major conflict between the forces stationed aboard the UNSC Forward Unto Dawn and Arbiter Thel 'Vadam's Fleet of Retribution, and the Covenant fleet loyal to the Prophet of Truth.

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Operation: SUNSPEAR
Dec
30
to Jan 1
Human-Covenant War

Operation: SUNSPEAR

  • Sat, Dec 30, 2552 12:00 AM 00:00 Mon, Jan 1, 2553 11:59 PM 23:59
  • Google Calendar ICS

Operation: SUNSPEAR was a mission to infiltrate Covenant space and destroy a major population center as an act of revenge for the Fall of Reach at the end of 2552.

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Discovery of the Ussans
Jan
1
12:00 AM00:00
Post-war Period, Great Schism

Discovery of the Ussans

  • Monday, January 1, 2553
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

At the start of the Covenant in 851 BCE, a group of Sangheili who did not agree with the peace being formed with the San'Shyuum, formed around their leader Ussa 'Xellus and escaped to a previously unknown Forerunner construct known as Shield World 0673.

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Spartan-IV First Class Training Program
Jan
7
to Feb 28
Post-war Period, Spartan Programs

Spartan-IV First Class Training Program

  • Sun, Jan 7, 2553 12:00 AM 00:00 Wed, Feb 28, 2553 10:59 PM 22:59
  • Google Calendar ICS

The Spartan-IV program was the third successful Spartan training program and the first since the end of the Human-Covenant War.

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Raid on UNSC Infinity
Jan
28
12:00 AM00:00
Insurrection, Post-war Period

Raid on UNSC Infinity

  • Sunday, January 28, 2553
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Raid on UNSC Infinity was an attempted infiltration and commandeering of the UNSC Infinity by insurrectionist forces calling themselves the New Colonial Alliance in January 2553.

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Blooding Years
Mar
1
to Oct 27
Post-war Period, Blooding Years, Covenant Remnants

Blooding Years

  • Thu, Mar 1, 2553 12:00 AM 00:00 Fri, Oct 27, 2558 10:59 PM 22:59
  • Google Calendar ICS

The Blooding Years is the Sangheili term for the civil war that raged for five years on Sanghelios and throughout Sangheili-occupied territories following the end of the Human-Covenant War and disappearance of the San’Shyuum.

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Voi Memorial Dedication
Mar
3
12:00 AM00:00
Post-war Period

Voi Memorial Dedication

  • Saturday, March 3, 2553
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Voi Memorial was erected in March 2553, marking the end of the Human-Covenant War and to remember all who were lost during the conflict.

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Siege at Kolaar
Mar
24
to Mar 26
Post-war Period, Blooding Years, Covenant Remnants

Siege at Kolaar

  • Sat, Mar 24, 2553 6:02 AM 06:02 Mon, Mar 26, 2553 10:59 PM 22:59
  • Google Calendar ICS

The Siege at Kolaar was an attack on Arbiter Thel 'Vadam and his forces by Avu Med 'Telcam and the Servants of the Abiding Truth in the first major conflict of the Sangheili civil war.

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Skirmish on Pious Inquisitor
Apr
13
11:00 PM23:00
Post-war Period, Covenant Remnants

Skirmish on Pious Inquisitor

  • Friday, April 13, 2553
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Skirmish on Pious Inquisitor was a small battle that took place between ONI intel unit Kilo-Five and Kig-Yar pirates on the CCS-class battlecruiser Pious Inquisitor in the Shaps system in April 2553.

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Operation: JOVIAN WHISTLE
May
13
to Jul 6
Post-war Period, Insurrection, Covenant Remnants, Forerunner Resurgence

Operation: JOVIAN WHISTLE

  • Sun, May 13, 2553 11:00 PM 23:00 Fri, Jul 6, 2553 10:59 PM 22:59
  • Google Calendar ICS

Operation: JOVIAN WHISTLE was an operation executed by the UNSC 717th Xeno-Materials Exploitation Battalion to recover a Forerunner ancilla on the human colony world of Gao in the Cordoba system in the early summer 2553.

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Attack on Rahnelo
Aug
31
11:00 PM23:00
Post-war Period, Covenant Remnants, Great Schism

Attack on Rahnelo

  • Friday, August 31, 2553
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Attack on Rahnelo was an unprovoked attack by the San'Shyuum Prelate Tem'Bhetek, directed by the former Covenant Minister of Preparation Boru'a'Neem, on the Sangheili colony world of Rahnelo towards the end of 2553.

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Ambush at Duraan
Sep
6
11:00 PM23:00
Post-war Period, Covenant Remnants, Great Schism

Ambush at Duraan

  • Thursday, September 6, 2553
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Ambush at Duraan was the second part of the prelate Tem'Bhetek's plan to lure in the Shadow of Intent, capture the ship, and kill Rtas 'Vadum.

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Battle of the Prototype Halo Installation
Sep
13
11:00 PM23:00
Post-war Period, Covenant Remnants, Great Schism

Battle of the Prototype Halo Installation

  • Thursday, September 13, 2553
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of the Prototype Halo Installation was a conflict between Tem'Bhetek, the former Covenant Minister of Preparation Boru'a'Neem, and the Shadow of Intent crew including Rtas 'Vadum and Tul 'Juran.

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Operation: RETRIBUTION
Dec
8
to Dec 16
Post-war Period, Covenant Remnants, Forerunner Resurgence

Operation: RETRIBUTION

  • Sat, Dec 8, 2553 12:00 AM 00:00 Sun, Dec 16, 2553 11:59 PM 23:59
  • Google Calendar ICS

Operation: RETRIBUTION was an Office of Naval Intelligence mission headed by operative Veta Lopis and her Ferret team to investigate the murder of Vice Admiral Graselyn Tuwa and the kidnapping of her family members on December 6th, 2553.

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Draco III Rebellion
Jan
3
12:00 AM00:00
Post-war Period, Insurrection

Draco III Rebellion

  • Thursday, January 3, 2554
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Draco III Rebellion was an insurrectionist rebellion led by United Rebel Front leader Captain Ingridson in the city of New Albany on the colony world of Draco III in January 2554.

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Spartan-IV Second Class Training Program
Feb
1
to Apr 1
Post-war Period, Spartan Programs

Spartan-IV Second Class Training Program

  • Fri, Feb 1, 2554 12:00 AM 00:00 Mon, Apr 1, 2554 9:59 PM 21:59
  • Google Calendar ICS

The Spartan-IV program was the third successful Spartan training program and the first since the end of the Human-Covenant War.

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Battle of Draetheus V
Feb
1
to Feb 14
Post-war Period, Covenant Remnants

Battle of Draetheus V

  • Fri, Feb 1, 2554 12:00 AM 00:00 Thu, Feb 14, 2554 11:59 PM 23:59
  • Google Calendar ICS

The Battle of Draetheus V was an attack by former Covenant forces under the command of Sangheili Zealot Merg Vol on the colony world of Draetheus V and its moon X50 sometime in 2554.

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Spartan Training Station Bombing
Mar
28
11:00 PM23:00
Post-war Period, Insurrection

Spartan Training Station Bombing

  • Thursday, March 28, 2554
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Spartan Training Station Bombing was a terrorist attack on an orbital Spartan training facility by the United Rebel Front on March 29th, 2554.

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Return to Installation 00
Aug
9
to Aug 21
Post-war Period, Forerunner Resurgence

Return to Installation 00

  • Fri, Aug 9, 2554 11:00 PM 23:00 Wed, Aug 21, 2554 10:59 PM 22:59
  • Google Calendar ICS

The Return to Installation 00 was an Office of Naval Intelligence mission undertaken by the UNSC Rubicon to return to the Ark following the Battle of Installation 00 and investigate the status of the facility in August 2554.

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Operation: FAR STORM
Mar
16
to Mar 20
Post-war Period, Forerunner Resurgence

Operation: FAR STORM

  • Sun, Mar 16, 2555 11:00 PM 23:00 Thu, Mar 20, 2555 10:59 PM 22:59
  • Google Calendar ICS

Operation: FAR STORM was a joint UNSC and Swords of Sanghelios mission to reactivate the Portal at Voi and travel back to Installation 00 after discovering the Halo array was counting down to activation in March 2555.

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Invasion of Earth
Mar
16
to Mar 20
Post-war Period, Forerunner Resurgence

Invasion of Earth

  • Sun, Mar 16, 2555 11:01 PM 23:01 Thu, Mar 20, 2555 11:00 PM 23:00
  • Google Calendar ICS

The Invasion of Earth was an attempt by the monitor of Installation 00 to harvest the Earth for resources to repair the Ark when the Portal at Voi was reopened in March of 2555.

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Operation: COALPEPPER
Jul
31
11:00 PM23:00
Post-war Period, Insurrection

Operation: COALPEPPER

  • Thursday, July 31, 2555
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

Operation: COALPEPPER was an ONI and Spartan operation to rescue Sadie Endesha and the Huragok Quick to Adjust to whom she was assigned from the United Rebel Front on the moon of Talitsa in the Sverdlovsk system in August 2555.

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Sedra City Mall Bombing
Feb
7
9:21 AM09:21
Post-war Period, Covenant Remnants

Sedra City Mall Bombing

  • Saturday, February 7, 2556
  • 9:21 AM 11:59 PM 09:21 23:59
  • Google Calendar ICS

The Sedra City Mall Bombing was a terrorist attack on the human colony world of Sedra in the Orrichon system by an unknown Sangheili terrorist organization in February 2556.

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Mission to Alpha Shard
Feb
8
12:00 AM00:00
Post-war Period, Covenant Remnants

Mission to Alpha Shard

  • Sunday, February 8, 2556
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Mission to Alpha Shard was a joint ONI and Sedran Colonial Guard mission to secure and eliminate the source of the bio-weapon used in the Sedra City Mall Bombing in February 2556.

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Mission to Cleyell
Mar
1
to Mar 3
Post-war Period, Covenant Remnants

Mission to Cleyell

  • Mon, Mar 1, 2556 12:00 AM 00:00 Wed, Mar 3, 2556 11:59 PM 23:59
  • Google Calendar ICS

The Mission to Cleyell was a UNSC mission to the colony world of Cleyell, which had recently been glassed by a fringe group of Covenant remnants sometime in 2556.

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Rediscovery of the Etran Harborage
Jan
1
12:00 AM00:00
Post-war Period, Forerunner Resurgence

Rediscovery of the Etran Harborage

  • Saturday, January 1, 2557
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

Sometime in January 2557, Rion Forge, a post-war salvager, and her ship the Ace of Spades, discover the location of what was left of the Etran Harborage after the destruction of the shield world during the events of the Battle of the Etran Harborage in 2531.

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Mission to the Korinth Prior System
Jun
8
1:21 AM01:21
Post-war Period, Covenant Remnants

Mission to the Korinth Prior System

  • Wednesday, June 8, 2557
  • 1:21 AM 4:14 PM 01:21 16:14
  • Google Calendar ICS

Following discovery of the last known location of the UNSC Spirit of Fire from the Battle of the Etran Harborage, the Office of Naval Intelligence sent the UNSC Taurokado to investigate the system for any information regarding the whereabouts of the lost UNSC warship.

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Battle of Requiem
Jul
20
to Jul 23
Post-war Period, Forerunner Resurgence, Covenant Remnants

Battle of Requiem

  • Wed, Jul 20, 2557 11:00 PM 23:00 Sat, Jul 23, 2557 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Requiem was a conflict between former Covenant forces under the command of Jul 'Mdama, UNSC forces from the UNSC Infinity and Forward unto Dawn, and Promethean forces under command of the Ur-Didact on Forerunner Shield World 0001, also known as Requiem, in July 2557.

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Battle of Installation 03
Jul
23
to Jul 26
Post-war Period, Forerunner Resurgence, Covenant Remnants

Battle of Installation 03

  • Sat, Jul 23, 2557 11:00 PM 23:00 Tue, Jul 26, 2557 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Installation 03 was a battle between the UNSC and Covenant remnant forces under command of Jul 'Mdama on Gamma Halo during and immediately following the New Phoenix Incident in July 2557.

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Raid on Ivanoff Station
Jul
23
11:00 PM23:00
Post-war Period, Forerunner Resurgence, Covenant Remnants

Raid on Ivanoff Station

  • Saturday, July 23, 2557
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Raid on Ivanoff Station was an attack by the Ur-Didact and his ship Mantle's Approach on the Office of Naval Intelligence research facility Ivanoff Station nearby Halo Installation 03 in July 2557. 

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New Phoenix Incident
Jul
25
11:40 AM11:40
Post-war Period, Forerunner Resurgence

New Phoenix Incident

  • Monday, July 25, 2557
  • 11:40 AM 3:00 PM 11:40 15:00
  • Google Calendar ICS

The New Phoenix Incident was an attack by the Ur-Didact on the Earth city of New Phoenix on July 25th, 2557 using the Composer that he had acquired from Ivanoff Station the day prior.

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Mission to Installation 03
Jul
25
to Jul 26
Post-war Period, Forerunner Resurgence

Mission to Installation 03

  • Mon, Jul 25, 2557 3:00 PM 15:00 Tue, Jul 26, 2557 10:59 PM 22:59
  • Google Calendar ICS

The Mission to Installation 03 was a UNSC operation to investigate the loss of contact with a science outpost and Spartan-II Black Team on Gamma Halo immediately following the New Phoenix Incident in July 2557.

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Battle of New Phoenix
Jul
25
11:00 PM23:00
Post-war Period, Forerunner Resurgence, Covenant Remnants

Battle of New Phoenix

  • Monday, July 25, 2557
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of New Phoenix was a military engagement between the UNSC and Covenant remnant forces under command of Jul 'Mdama in the city of New Phoenix on Earth, immediately after the New Phoenix Incident and the Battle of Installation 03 in July 2557.

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Mission to Mount Kilimanjaro
Sep
1
12:00 AM00:00
Post-war Period, Forerunner Resurgence

Mission to Mount Kilimanjaro

  • Thursday, September 1, 2557
  • 12:00 AM 10:59 PM 00:00 22:59
  • Google Calendar ICS

The Mission to Mount Kilimanjaro was a trek undertaken by 343 Guilty Spark, Rion Forge, and the crew of the Ace of Spades to find the Librarian and, in the case of Spark, gain access to the Domain in September 2557.

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Assassination of Avu Med 'Telcam
Jan
21
to Jan 22
Post-war Period

Assassination of Avu Med 'Telcam

  • Sat, Jan 21, 2558 4:53 PM 16:53 Sun, Jan 22, 2558 11:59 PM 23:59
  • Google Calendar ICS

The Assassination of Avu Med 'Telcam was an assassination sanctioned by the Office of Naval Intelligence Section Three and carried out by SPARTAN-G059 on the leader of the Servants of the Abiding Truth on former colony world New Llanelli in the Brunel system in January 2558.

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Requiem Campaign
Feb
7
to Feb 28
Post-war Period, Forerunner Resurgence, Covenant Remnants

Requiem Campaign

  • Tue, Feb 7, 2558 12:00 AM 00:00 Tue, Feb 28, 2558 11:59 PM 23:59
  • Google Calendar ICS

The Requiem Campaign was a UNSC mission to return to Requiem, and take control of the shield world away from Jul 'Mdama and his Covenant remnants in February 2558, six months after the Battle of Requiem.

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Battle of Ealen IV
Mar
5
7:02 AM07:02
Post-war Period, Insurrection

Battle of Ealen IV

  • Sunday, March 5, 2558
  • 7:02 AM 11:59 PM 07:02 23:59
  • Google Calendar ICS

The Battle of Ealen IV was an attack on peace negotiations between the Sangheili and Jiralhanae on Ealen IV in the Ealen system in March 2558.

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Ambush at Oth Lodon
Mar
11
12:00 AM00:00
Post-war Period, Insurrection

Ambush at Oth Lodon

  • Saturday, March 11, 2558
  • 12:00 AM 11:59 PM 00:00 23:59
  • Google Calendar ICS

The Ambush at Oth Lodon was an attempt by the New Colonial Alliance to destroy the UNSC Infinity and kill Admiral Hood after the failed assassination attempt at Ealen IV days earlier.

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Raid on the Biko Peace Talks
Mar
28
11:00 PM23:00
Post-war Period, Insurrection

Raid on the Biko Peace Talks

  • Tuesday, March 28, 2558
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Raid on the Biko Peace Talks was an attempted terrorist attack on peace talks between the Unified Earth Government and Sangheili on the colony world of Biko in March 2558.

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Operation: WHISTLE STOP
May
8
to May 10
Post-war Period, Covenant Remnants

Operation: WHISTLE STOP

  • Mon, May 8, 2558 11:00 PM 23:00 Wed, May 10, 2558 10:59 PM 22:59
  • Google Calendar ICS

Operation: WHISTLE STOP was a UNSC and ONI mission to recover a potential bio-weapon from a group of Sangheili and Kig-Yar pirates on the planet Ven-III in May 2558.

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Battle of Oban
Jul
15
11:00 PM23:00
Post-war Period, Covenant Remnants

Battle of Oban

  • Saturday, July 15, 2558
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Oban was a conflict between the UNSC and Covenant forces under command of Jul 'Mdama on the colony world of Oban in July 2558.

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Battle of Aktis IV
Jul
18
to Jul 20
Post-war Period, Covenant Remnants

Battle of Aktis IV

  • Tue, Jul 18, 2558 11:00 PM 23:00 Thu, Jul 20, 2558 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Aktis IV was a conflict between the UNSC forces aboard the Infinity and the Covenant forces under command of Jul 'Mdama on the planet of Aktis IV in July 2558.

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Carrow Conflict
Sep
1
to Sep 3
Post-war Period, Blooding Years

Carrow Conflict

  • Fri, Sep 1, 2558 12:00 AM 00:00 Sun, Sep 3, 2558 9:59 PM 21:59
  • Google Calendar ICS

The Carrow Conflict was a conflict between human, Sangheili, and Jiralhanae forces in the Joint Occupation Zone on the planet of Carrow in September 2558.

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Operation: ATHENA
Sep
16
to Sep 18
Post-war Period, Covenant Remnants

Operation: ATHENA

  • Sat, Sep 16, 2558 11:00 PM 23:00 Mon, Sep 18, 2558 10:59 PM 22:59
  • Google Calendar ICS

Operation: ATHENA was a covert UNSC mission to infiltrate the Song of Retribution, and retrieve the Janus Key from Jul 'Mdama and his Covenant remnant forces in September 2558.

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Battle of Kamchatka
Oct
15
11:00 PM23:00
The Created, Covenant Remnants, Post-war Period

Battle of Kamchatka

  • Sunday, October 15, 2558
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Kamchatka was a battle between Covenant remnant forces under the leadership of Jul 'Mdama, local Promethean forces under control of Cortana, and the UNSC in the form of Spartan-IV Fireteam Osiris on the planet of Kamchatka in October 2558.

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Operation: BIRD IN HAND
Oct
22
11:00 PM23:00
Covenant Remnants, Post-war Period

Operation: BIRD IN HAND

  • Sunday, October 22, 2558
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

Operation: BIRD IN HAND was a UNSC mission carried out by Spartan-II Blue Team to infiltrate and recover the Office of Naval Intelligence research vessel Argent Moon on October 23rd, 2558.

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Raising of the Guardians
Oct
23
to Oct 28
The Created

Raising of the Guardians

  • Mon, Oct 23, 2558 11:00 PM 23:00 Sat, Oct 28, 2558 10:59 PM 22:59
  • Google Calendar ICS

The Raising of the Guardians was a series of events involving the awakening and unearthing of Forerunner ships known as Guardians by Cortana in late October 2558.

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Battle of Genesis
Oct
24
to Oct 27
The Created

Battle of Genesis

  • Tue, Oct 24, 2558 11:00 PM 23:00 Fri, Oct 27, 2558 10:59 PM 22:59
  • Google Calendar ICS

The Battle of Genesis was an engagement between the UNSC, Promethean forces under command of Cortana, and the remains of Jul 'Mdama's Covenant forces on the artificial Forerunner installation known as Genesis in October 2558.

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Second Battle of Meridian
Oct
25
12:00 AM00:00
The Created

Second Battle of Meridian

  • Wednesday, October 25, 2558
  • 12:00 AM 11:59 AM 00:00 11:59
  • Google Calendar ICS

The Second Battle of Meridian was a conflict between the colonists of Meridian funded by the Liang-Dortmund Corporation, the UNSC, and Prometheans under control of Cortana on October 25th, 2558.

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Battle of Nuusra
Oct
26
11:00 PM23:00
Post-war Period, Blooding Years, Covenant Remnants

Battle of Nuusra

  • Thursday, October 26, 2558
  • 11:00 PM 10:59 AM 23:00 10:59
  • Google Calendar ICS

The Battle of Nuusra was a battle between the remnants of Jul 'Mdama's Covenant forces, the Swords of Sanghelios, and Spartan-IV Fireteam Osiris in the sate of Nuusra on the continent Qivro on the Sangheili homeworld of Sanghelios on October 27th, 2558.

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Battle of Sunaion
Oct
27
11:00 AM11:00
The Created, Blooding Years, Covenant Remnants, Post-war Period

Battle of Sunaion

  • Friday, October 27, 2558
  • 11:00 AM 10:59 PM 11:00 22:59
  • Google Calendar ICS

The Battle of Sunaion was a battle between the Swords of Sanghelios led by Thel 'Vadam, their allies Fireteam Osiris led by Jameson Locke, the last of Jul 'Mdama's Covenant forces, and the Created forces led by the Warden Eternal in the state of Sunaion on the Sangheili homeworld of Sanghelios.

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Discovery of Bastion
Oct
28
12:00 AM00:00
The Created

Discovery of Bastion

  • Saturday, October 28, 2558
  • 12:00 AM 9:59 PM 00:00 21:59
  • Google Calendar ICS

The discovery of Bastion was the culmination of a series of events involving 343 Guilty Spark and Rion Forge that led to the discovery of the Librarian’s shield world.

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Battle of Cassidy III
Oct
31
11:00 PM23:00
The Created

Battle of Cassidy III

  • Tuesday, October 31, 2558
  • 11:00 PM 10:59 PM 23:00 22:59
  • Google Calendar ICS

The Battle of Cassidy III was a conflict between Spartan-IV fireteam Alpha-Nine, allied with United Rebel Front forces on Cassidy III, and the Promethean forces under command of the Created late in 2558.

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Second Ark Conflict
Mar
28
to Jul 31
Post-war Period, The Banished

Second Ark Conflict

  • Wed, Mar 28, 2559 11:00 AM 11:00 Tue, Jul 31, 2559 10:59 PM 22:59
  • Google Calendar ICS

The Second Ark Conflict was a battle between the UNSC forces aboard the Spirit of Fire and the Banished forces under command of Atriox on Installation 00 in 2559.

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Outbreak on Installation 00
Jun
4
12:00 AM00:00
Post-war Period, The Banished

Outbreak on Installation 00

  • Monday, June 4, 2559
  • 12:00 AM 10:59 PM 00:00 22:59
  • Google Calendar ICS

The Outbreak on Installation 00 was a brief encounter between Banished forces and the Flood on the surface of the Ark in and around the wreckage of the Covenant holy city High Charity.

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Raid on Anodyne Spirit
Jul
1
12:00 AM00:00
Post-war Period, The Banished

Raid on Anodyne Spirit

  • Sunday, July 1, 2559
  • 12:00 AM 10:59 PM 00:00 22:59
  • Google Calendar ICS

The Raid on Anodyne Spirit was a operation by Banished forces on the Ark to recover fragments of a Forerunner slipspace flake from the Anodyne Spirit, left by the Prophet of Truth following the end of the Battle of Installation 00 in 2552.

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Operation: HOURGLASS
Sep
23
to Oct 6
The Created

Operation: HOURGLASS

  • Sun, Sep 23, 2559 11:00 PM 23:00 Sat, Oct 6, 2559 10:59 PM 22:59
  • Google Calendar ICS

ONI agent Lieutenant Parisa, is sent on a mission to deliver an encryption key to John-117 behind enemy lines prior to the Battle of Installation 07.

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Operation: WOLFE
Oct
7
to Oct 12
The Banished, Novels, The Created

Operation: WOLFE

  • Sun, Oct 7, 2559 12:00 AM 00:00 Fri, Oct 12, 2559 10:59 PM 22:59
  • Google Calendar ICS

Operation: WOLFE was a UNSC mission on the planet Reach in October 2559 to recover several cryobins from CASTLE Base under Menachite Mountain for Doctor Catherine Halsey.

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Battle of Epsilon Clarion
Oct
14
12:00 AM00:00
The Banished, Novels, The Created

Battle of Epsilon Clarion

  • Sunday, October 14, 2559
  • 12:00 AM 10:59 PM 00:00 22:59
  • Google Calendar ICS

The Battle of Epsilon Clarion was a conflict on the Ark between the Keepers of the One Freedom, the Covenant, and the Banished to activate the Halo Array in late 2559.

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Installation 07 Conflict
Dec
12
to May 31
The Banished, The Created

Installation 07 Conflict

  • Wed, Dec 12, 2559 12:00 AM 00:00 Sat, May 31, 2560 10:59 PM 22:59
  • Google Calendar ICS

The Installation 07 Conflict was a battle between UNSC forces led by John-117 and the Banished on Zeta Halo between December 12th, 2559 and May 31st, 2560.

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Construction of Maethrillian
Jan
1
2:59 PM14:59
Forerunner Era

Construction of Maethrillian

  • Saturday, January 1, 2000
  • 2:59 PM 2:59 PM 14:59 14:59
  • Google Calendar ICS

~125,000 BCE

Around 125,000 BCE, the Forerunners built the crown jewel of their civilization, an artificial world that served as the center of all Forerunner governance, Maethrillian.

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Kig-Yar Join the Covenant
Dec
24
to Dec 23
Covenant Formation, Later Covenant

Kig-Yar Join the Covenant

  • Mon, Dec 24, 1341 12:04 AM 00:04 Mon, Dec 23, 1342 11:59 PM 23:59
  • Google Calendar ICS

1342 CE

In 1342, Covenant ships arrived in the Y’Deio system, the home system of the Kig-Yar, finding a species with a penchant for piracy.

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Yanme'e Join the Covenant
Dec
25
to Dec 24
Covenant Formation, Later Covenant

Yanme'e Join the Covenant

  • Mon, Dec 25, 1111 12:04 AM 00:04 Tue, Dec 24, 1112 11:58 PM 23:58
  • Google Calendar ICS

1112 CE

The Yanme’e were discovered by the Covenant during their search for Forerunner artifacts in 1112, sparking a short but violent conflict that eventually ended in the incorporation of the Yanme’e into the Covenant.

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Creation of the Domain
Jan
3
11:03 PM23:03
Forerunner Era

Creation of the Domain

  • Friday, January 3, 100
  • 11:03 PM 11:03 PM 23:03 23:03
  • Google Calendar ICS

~500 Mya

Sometime long before the time of the Forerunners, the Precursors created the Domain, a repository of all knowledge in the universe. The exact date is unknown, and while some sources say it was created 500 million years ago, others say it has existed for billions of years.

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Birth of the Forerunners
Jan
3
10:03 PM22:03
Forerunner Era

Birth of the Forerunners

  • Friday, January 3, 100
  • 10:03 PM 10:03 PM 22:03 22:03
  • Google Calendar ICS

~15 Mya

Around fifteen million years ago, the Forerunner race was created by the Precursors in an effort to make a new species that could assume the Mantle of Responsibility.

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Forerunner-Precursor War
Jan
3
9:03 PM21:03
Forerunner Era

Forerunner-Precursor War

  • Friday, January 3, 100
  • 9:03 PM 9:03 PM 21:03 21:03
  • Google Calendar ICS

~10 Mya

Ten million years ago, the Precursors, the species that populated the galaxy with intelligent life including Forerunners, determined the Forerunners were a failed experiment and decided to remove them from the Milky Way galaxy.

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Birth of the Flood
Jan
3
2:59 PM14:59
Forerunner Era

Birth of the Flood

  • Friday, January 3, 100
  • 2:59 PM 2:59 PM 14:59 14:59
  • Google Calendar ICS

~107,445 BCE

The birth of the Flood is actually a series of events that can be traced to a time period around 10,000 years prior to the firing of the Halo Array in 97,445 BCE.

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Human-Forerunner Wars
Jan
3
2:58 PM14:58
Forerunner Era

Human-Forerunner Wars

  • Friday, January 3, 100
  • 2:58 PM 2:58 PM 14:58 14:58
  • Google Calendar ICS

~107,445 BCE - 106,445 BCE

After the emergence of the Flood on ancient human worlds around 107,445 BCE, human civilization was desperate to expand their territory away from Flood-controlled regions of space. As part of this expansion, humans clashed with Forerunner-populated worlds, sparking a war between the two species.

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Discovery of the Primordial
Jan
3
2:57 PM14:57
Forerunner Era

Discovery of the Primordial

  • Friday, January 3, 100
  • 2:57 PM 2:57 PM 14:57 14:57
  • Google Calendar ICS

~106,538 BCE

Sometime prior to the end of the Human-Forerunner Wars, ancient humans discovered a Precursor stasis chamber containing a creature they called the Primordial. The creature, along with the stasis chamber, was taken to Charum Hakkor where is was interrogated, teaching the humans on the origins of the Flood.

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Battle of Charum Hakkor
Jan
3
2:56 PM14:56
Forerunner Era

Battle of Charum Hakkor

  • Friday, January 3, 100
  • 2:56 PM 2:56 PM 14:56 14:56
  • Google Calendar ICS

~106,498 BCE - 106,445 BCE

The Battle of Charum Hakkor was one of the final battles of the Human-Forerunner Wars and also one of the largest, spanning over fifty years and likely consuming millions of lives.

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Exile of the Didact
Jan
3
2:55 PM14:55
Forerunner Era

Exile of the Didact

  • Friday, January 3, 100
  • 2:55 PM 2:55 PM 14:55 14:55
  • Google Calendar ICS

~98,445 BCE

After losing political power to the Master Builder and the entire Builder rate following the end of the Human-Forerunner Wars, the Didact placed himself in exile within a cryptum on Nomdagro, which was later moved to Erde-Tyrene.

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Expedition to Path Kethona
Jan
3
2:54 PM14:54
Forerunner Era

Expedition to Path Kethona

  • Friday, January 3, 100
  • 2:54 PM 2:54 PM 14:54 14:54
  • Google Calendar ICS

~98,395 BCE

The end of the Human-Forerunner War, along with the political fight afterwards that led to the Exile of the Didact, spurred much debate within Forerunner leadership about the right course of action to defend civilization and the galaxy against the Flood, should they return.

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Flood Return to the Milky Way
Jan
3
2:53 PM14:53
Forerunner Era

Flood Return to the Milky Way

  • Friday, January 3, 100
  • 2:53 PM 2:53 PM 14:53 14:53
  • Google Calendar ICS

~97,745 BCE

Around 97,745 BCE, nearly nine-thousand years since the Flood disappeared from the galaxy during the Human-Forerunner Wars and three-hundred years before the Great Purification, the Flood were first observed at the edges of the galaxy on the planet Seaward, a Forerunner colony world.

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Forerunner-Flood War
Jan
3
2:52 PM14:52
Forerunner Era

Forerunner-Flood War

  • Friday, January 3, 100
  • 2:52 PM 2:52 PM 14:52 14:52
  • Google Calendar ICS

~97,745 BCE - 97,445 BCE

The Forerunner-Flood War was a military engagement between the Forerunner species and the Flood that took place over approximately three-hundred years from 97,745 BCE until 97,445 BCE.

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Release of the Primordial
Jan
3
2:51 PM14:51
Forerunner Era

Release of the Primordial

  • Friday, January 3, 100
  • 2:51 PM 2:51 PM 14:51 14:51
  • Google Calendar ICS

~97,495 BCE

The release of the Primordial was an unintended consequence of the test-firing of a Senescent Halo, Installation 07, by the Master Builder and Mendicant Bias in the Charum Hakkor system during the Forerunner-Flood War, approximately fifty years prior to the end of the war and the Great Purification.

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Revival of the Didact
Jan
3
2:03 PM14:03
Forerunner Era

Revival of the Didact

  • Friday, January 3, 100
  • 2:03 PM 2:03 PM 14:03 14:03
  • Google Calendar ICS

~97,455 BCE

Following the Didact’s self-imposed exile one thousand years prior after losing the political battle over the Forerunner defense plan against the Flood, the Didact is resurrected from his cryptum on Erde-Tyrene by Forerunner Manipular Bornstellar Makes Eternal Lasting, and humans Chakas and Riser.

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Battle of Janjur Qom
Jan
3
2:02 PM14:02
Forerunner Era

Battle of Janjur Qom

  • Friday, January 3, 100
  • 2:02 PM 2:02 PM 14:02 14:02
  • Google Calendar ICS

~97,455 BCE

The Battle of Janjur Qom was a brief conflict between the San’shyuum and Forerunners on the quarantined San’shyuum homeworld of Janjur Qom several years prior to the firing of the Halo Array during the Great Purification in 97,445 BCE.

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Capture of the Didact
Jan
3
2:01 PM14:01
Forerunner Era

Capture of the Didact

  • Friday, January 3, 100
  • 2:01 PM 2:01 PM 14:01 14:01
  • Google Calendar ICS

~97,455 BCE

After the Revival of the Didact and his exploration of the Charum Hakkor system with fellow Forerunner Bornstellar Makes Eternal Lasting and humans Riser and Chakas, the Didact and crew traveled to the quarantined San’shyuum homeworld of Janjur Qom to try and unlock more memories in their quest for understanding.

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Fate of Maethrillian
Jan
3
2:00 PM14:00
Forerunner Era

Fate of Maethrillian

  • Friday, January 3, 100
  • 2:00 PM 2:00 PM 14:00 14:00
  • Google Calendar ICS

~97,454 BCE

The Fate of Maethrillian was a large-scale but brief battle between the Forerunners and the Halo Array under command of Mendicant Bias several years prior to the firing of the halos during the Great Purification in 97,445 BCE.

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Salvation of Zeta Halo
Jan
3
1:59 PM13:59
Forerunner Era

Salvation of Zeta Halo

  • Friday, January 3, 100
  • 1:59 PM 1:59 PM 13:59 13:59
  • Google Calendar ICS

~97,454 BCE

In the aftermath of the Fate of Maethrillian and destruction of the Forerunner ecumene, Zeta Halo implemented it’s security measure designed to prevent the ring from falling into enemy hands and performed a slipspace jump into another system and put itself on a collision course with a nearby planet.

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Return of the Didact
Jan
3
1:58 PM13:58
Forerunner Era

Return of the Didact

  • Friday, January 3, 100
  • 1:58 PM 1:58 PM 13:58 13:58
  • Google Calendar ICS

~97,450 BCE

After the Master Builder captured the Didact over Janjur Qom, he decided to dispose of the Didact on a derelict Forerunner ship with a handful of other political prisoners in an area of Flood-controlled space known as a Burn.

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Battle of the Greater Ark
Jan
3
1:57 PM13:57
Forerunner Era

Battle of the Greater Ark

  • Friday, January 3, 100
  • 1:57 PM 1:57 PM 13:57 13:57
  • Google Calendar ICS

~97,445 BCE

The Battle of the Greater Ark was one of the final battles of the Forerunner-Flood War and saw the decimation of almost all remaining Forerunner forces just prior to the firing of the Halo Array during the Great Purification in 97,445 BCE.

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Judgement of the Didact
Jan
3
1:56 PM13:56
Forerunner Era

Judgement of the Didact

  • Friday, January 3, 100
  • 1:56 PM 1:56 PM 13:56 13:56
  • Google Calendar ICS

~97,445 BCE

The behavior of the Ur-Didact following his encounter with a Gravemind and return to the Forerunner civilization became more erratic and harder for the IsoDidact and Librarian to cope with as the Forerunner-Flood War continued.

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Great Purification
Jan
3
1:55 PM13:55
Forerunner Era

Great Purification

  • Friday, January 3, 100
  • 1:55 PM 1:55 PM 13:55 13:55
  • Google Calendar ICS

~97,445 BCE

The Great Purification was the final event of the Forerunner-Flood War, purging the entire Milky Way galaxy of all sentient life, including Forerunners, the Flood, and any other species that may have survived the Flood infestation.

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Return to Maethrillian
Jan
3
1:54 PM13:54
Forerunner Era

Return to Maethrillian

  • Friday, January 3, 100
  • 1:54 PM 1:54 PM 13:54 13:54
  • Google Calendar ICS

~97,300 BCE

Over one-hundred years after the Great Purification, the few Forerunners remaining on the Lesser Ark became aware that the firing of the Halo Array may have had a detrimental effect on the Domain, and proceeded to the former Forerunner capital of Maethrillian to attempt to restore it.

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War of Wills
Jan
3
2:03 AM02:03
Covenant Formation, Early Covenant

War of Wills

  • Friday, January 3, 100
  • 2:03 AM 2:03 AM 02:03 02:03
  • Google Calendar ICS

2200 BCE - 2100 BCE

The War of Wills was a fierce and prolonged conflict between two factions of the San’Shyuum: The Stoics who wanted to worship Forerunner technology but never use it, and the Reformists who wanted to take advantage of the incredible Forerunner artifacts around the galaxy.

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War of Beginnings
Jan
3
2:02 AM02:02
Covenant Formation, Early Covenant

War of Beginnings

  • Friday, January 3, 100
  • 2:02 AM 2:02 AM 02:02 02:02
  • Google Calendar ICS

938 BCE - 852 BCE

The War of Beginnings was an eighty-six year conflict between the San’Shyuum Reformists who escaped Janjur Qom after the War of Wills and the Sangheili species between 938 and 852 BCE.

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Skirmish of the Planet of Blue and Red
Jan
3
2:01 AM02:01
Covenant Formation, Early Covenant

Skirmish of the Planet of Blue and Red

  • Friday, January 3, 100
  • 2:01 AM 2:01 AM 02:01 02:01
  • Google Calendar ICS

860 BCE

The Skirmish of the Planet of Blue and Red was a conflict between the San’Shyuum and Sangheili during the War of Beginnings in 860 BCE.

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Writ of Union Signed
Jan
3
2:00 AM02:00
Covenant Formation, Early Covenant

Writ of Union Signed

  • Friday, January 3, 100
  • 2:00 AM 2:00 AM 02:00 02:00
  • Google Calendar ICS

852 BCE

The Writ of Union was a declaration of peace between the San’Shyuum and the Sangheili, as well as the formation of the Covenant, signed by both species in 852 BCE.

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Construction of High Charity
Jan
3
1:59 AM01:59
Covenant Formation, Early Covenant

Construction of High Charity

  • Friday, January 3, 100
  • 1:59 AM 1:59 AM 01:59 01:59
  • Google Calendar ICS

852 BCE - 791 BCE

The Writ of Union not only formed an alliance between the Sangheili and the San’Shyuum, but also commissioned the construction of a great holy city of the Covenant, known as High Charity.

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