With Earth's population at 9 billion, an ambitious space colonization program begins. The calendar is changed to the Universal Century era.

Zeon Zum Deikun is born.
* Source: MS ERA 0099.

The Jupiter Energy Fleet is reorganized as the Jupiter Development Enterprise Group.

The Earth Federation government establishes the Frontier Settlement Transport Bureau.

The Earth Federation government declares that war has been eradicated from the surface of the Earth.
* Source: Gundam Officials.

Von Braun, the first permanent lunar settlement, is established.

The Federation government privatizes the Frontier Settlement Transport Bureau, which becomes the Space Transport Enterprise Group.

The Federation government again reorganizes the Space Transport Enterprise Group, forming the Public Corporation of Space Transport (PCST), an independent non-governmental organization.

Construction of Side 2 is completed.
* Source: MS ERA 0099.

Construction of Side 3 begins.

40% of the human population (roughly 5 billion people) has emigrated to space.
* A later entry in the official timeline claims that 9 billion people, out of a total population of 11 billion, have emigrated to space by U.C. 0050. However, this is contradicted by the opening narration of the Gundam II and Gundam III movies, which state that half of humanity now lives in space.

The asteroid Juno, later known as Luna II, is placed in Earth orbit to help with space colony construction.

The Minovsky Physics Society is founded at the Side 3 colony cluster.

Zeon Zum Deikun formulates the ideology known as Contolism. Deikun argues that humanity should complete its migration to space, and that the space colonies should be treated as independent nations.
* Source: Gundam Officials. MS ERA 0099 claims that this happens the previous year.

Development of the Minovsky-Ionesco fusion reactor begins.

The Earth Federation halts construction of new space colonies, and the colonization program is effectively ended.

Zeon Zum Deikun moves to Side 3 to spread his ideology of Contolism.

The Buch Concern is established.

Side 3 declares its independence, and the Republic of Zeon is established. A National Guard is formed.

The Federation government applies economic pressure against Side 3.

The Earth Federation Space Force is established.
* Source: Entertainment Bible 1.

Casval Rem Deikun, the son of Zeon Deikun, is born.
* Gundam Officials is uncertain whether Casval is born on September 27 or November 17. In either case he'd be just nineteen years old as Mobile Suit Gundam begins, although he's supposed to be twenty at that point.

The Federation Forces launch the '60s Armament Reinforcement Plan. Luna II is converted into a military base.

The Zeon National Guard is promoted to the status of a full-fledged military.

Artesia Som Deikun, the daughter of Zeon Deikun, is born.
* Source: Gundam Ace 020.

Amuro Ray is born.
* Source: Gundam Ace 001. Although Amuro is fifteen as Mobile Suit Gundam begins, he has turned sixteen by the time he meets Char Aznable at Side 6's Palda colony.

The Federation Forces hold a naval review. The new spaceships developed as part of the Armament Reinforcement Plan take center stage.

The researchers of the Minovsky Physics Society observe a unique electromagnetic effect within the Minovsky-Ionesco fusion reactor, leading to the discovery of the Minovsky particle.

The Federation government rejects a motion for colonial autonomy.

Haman Karn is born.
* Source: Gundam Ace 002.

The Buch Concern purchases the name of Europe's Ronah family.

Zeon Zum Deikun dies under suspicious circumstances, and Degwin Sodo Zabi succeeds him as leader.
* MS ERA 0099 claims that Deikun's death takes place in October of this year.

The political conflict between the followers of Zeon Deikun and Degwin Zabi escalates. Sasro Zabi, Degwin's second son, is assassinated in what appears to be an act of revenge by Deikun's followers.
* Although some sources place the assassination of Sasro closer to the foundation of the Principality of Zeon, Gundam Officials and Gundam The Origin indicate that it closely follows Deikun's death.

The existence of the Minovsky particle is confirmed.
* Source: Gundam Officials.

Degwin Sodo Zabi declares himself sovereign and establishes the Principality of Zeon.

Zeon Zum Deikun's followers are purged from Side 3. Deikun's children Casval and Artesia are taken to Earth for their protection.

The Principality of Zeon commissions the first ship of the Papua class.
* According to Gundam Century and Gundam Officials, the Papua was originally designed as a missile cruiser and later converted to a transport ship.

The Principality of Zeon successfully experiments with the Minovsky effect, using the dispersion of Minovsky particles to jam radar.

The Principality of Zeon completes the mega particle cannon.

The Principality of Zeon commissions the first ship of the Chivvay class.
* According to Gundam Officials, the Chivvay was originally classified as a battleship and later redesignated as a heavy cruiser.

The Federation Forces '70s Armament Reinforcement Plan produces the Salamis-class space cruiser and Magellan-class space battleship.

The Principality of Zeon dispatches its first Jupiter Fleet to collect helium from the planet's atmosphere.
* Source: The Encyclopedia of Gundam.

Luna II is moved to Lagrange point 3, a position in Earth orbit opposite that of the moon, in order to help construct Side 7.

The Principality of Zeon begins development of new weapons for use in the era of Minovsky physics. The compact fusion reactor is completed.

Gihren Zabi proclaims his Survival of the Selected theory.
* This is the English translation used in Gundam Officials. Literally, it's something like Survival of the Superior Race.

In the asteroid belt, the Principality of Zeon begins construction of the asteroid base Axis.

The scientist Doctor Minovsky defects from the Principality.

The Principality of Zeon begins the development of the mobile tank Hildolfr.
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Principality of Zeon completes the first prototype mobile suit, the MS-01.

Casval Rem Deikun returns to Side 3 under the alias Char Aznable.
* Source: MS ERA 0099. This is also the date given in the Gundam The Origin comic serial. MS ERA and Gundam The Origin indicate that Char enters the Principality's military academy this same year, but other sources claim that he doesn't do so until U.C. 0075 or 0076.

The Principality of Zeon completes the MS-04. This prototype mobile suit is equipped with a super-compact fusion reactor based on Minovsky physics.
* See footnote 1: MS-05 Zaku Series.

The Principality of Zeon commissions the first of an improved type of Papua-class transport ship.
* According to Gundam Officials, this new version features a Minovsky fusion reactor, and its missile storage has been converted to cargo space.

The first Jupiter Fleet returns to the Principality of Zeon.
* Source: The Encyclopedia of Gundam.

The Principality of Zeon conducts tests of its prototype mobile suits. The EMS-05 Zudah is rejected in favor of the MS-05 Zaku.
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report. The comics and articles in Gundam Ace 036 and 037 indicate that the Zudah is tested against the YMS-05 version of the Zaku I.

The Principality of Zeon rolls out the combat-ready MS-05 Zaku.
* See footnote 1: MS-05 Zaku Series.

The Principality of Zeon commissions its first Musai-class space cruiser, the first warship designed to carry mobile suits, and begins production of the MS-05 Zaku.
* See footnote 1: MS-05 Zaku Series.

The Principality of Zeon forms a mobile suit training battalion.

The first production run of the MS-05 Zaku comes to an end.
* Source: Entertainment Bible 1. See footnote 1: MS-05 Zaku Series.

The Principality of Zeon commissions the first Gwazine-class space battleship.

The Principality of Zeon expands its mobile suit production facilities.

The Principality of Zeon's Mobile Training Battalion secretly begins practicing combat manuevers.

The Principality of Zeon commissions the first Zanzibar-class mobile cruiser.

Christina Mackenzie enters the Federation Space Force military academy.
* Source: Gundam The OVA Movies VII.

Anticipating a possible Earth invasion, the Principality of Zeon begins developing specialized mobile suits for land and sea warfare.

As part of their 0077 Armament Reinforcement Plan, the Federation Forces launch the SCV-X project, which focuses on space vessel construction and consists of several simultaneous development projects. The SCV-27 open-decked space carrier plan is adopted.
* Source: The Encyclopedia of Gundam. This event was first mentioned in Mobile Suit Variation 2.

Thanks to a wartime exemption, Char Aznable graduates ahead of schedule from the Principality of Zeon's military academy.
* Source: Gundam Officials.

The Principality of Zeon deploys MS-05 Zaku forces to support a revolution at Side 6. The Federation Forces obtain data on the Principality's mobile suit technology.
* Source: MS ERA 0099. Although MS ERA says only that this event takes place in U.C. 0077, the original account in Gundam Century specifies that it happens in July, and The Encyclopedia of Gundam gives the same date for the establishment of the Rank administration.

The Principality of Zeon rolls out the prototype MS-06A Zaku II.

The Principality of Zeon begins production of the final version of the MS-05B Zaku.
* Source: Master Grade MS-05B Zaku manual.

Christina Mackenzie graduates from the Federation Space Force military academy at the top of her class.
* Source: Gundam The OVA Movies VII.

The Principality of Zeon begins mass production of the MS-06 Zaku II.
* See footnote 2: MS-06 Zaku II Series.

Inter-colony transportation accidents become frequent.
* These accidents are actually due to secret maneuvers by Zeon mobile suits. Around this time, according to Gundam Officials, the Principality of Zeon deliberately leaks its plans for an armed invasion of Side 2 in order to test the Federation's reaction.

The Federation Forces begin the construction of three Pegasus-class mobile assault carriers at their Jaburo headquarters in South America.
* Source: Mobile Suit Variation 3.

The Federation Forces launch a secret mobile suit development program. Several projects are begun simultaneously as part of the RX Project.

The Federation Forces strengthen their colony garrisons.

Migration begins to Side 7's incomplete Colony 1.

The Principality of Zeon begins development of the Tivvay, a heavy cruiser of the Chivvay class.

The Principality of Zeon rolls out the improved MS-06F Zaku II, as well as an MS-06J type designed for land warfare.
* Source: Master Grade MS-06F/J Zaku II manual. See footnote 2: MS-06 Zaku II Series.

The Principality of Zeon announces a state of national mobilization. The Zeon military is divided into a Space Attack Force commanded by Dozle Zabi, and a Mobile Assault Force led by Kycilia Zabi.

The Principality of Zeon uses armed force to suppress a rebellion at Side 3's Kintzem colony.
* Source: MS ERA 0099.

The Principality of Zeon establishes the 603rd Technical Evaluation Unit.
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Federation Forces hold a naval review.

The Principality of Zeon secretly begins development of the Dolos-class carrier.

The Principality of Zeon shifts its mobile suit production to the MS-06F Zaku II, devoting 80 percent of its production facilities to this model.
* Source: Gundam Officials.

The One Week Battle begins. During this first week of the One Year War, the indiscriminate use of nuclear, biological, and chemical weapons claims the lives of 2.8 billion space colonists.
* See footnote 3: Casualties of War.

07:20   The Principality of Zeon declares war against the Earth Federation. The Principality carries out surprise attacks on the Federation's patrol fleets, and launches indiscriminate assaults on Sides 1, 2, and 4.
* Source: Entertainment Bible 39.

08:50   The news that war has broken out is relayed throughout the Federation fleet.
* Source: Entertainment Bible 39.

The Principality's 603rd Technical Evaluation Unit receives the QCX-76A Jormungand.
(MS Igloo: The Hidden One Year War episode 1)
* The date is specified in the episode itself.

Operation British begins. The Principality of Zeon moves a space colony out of orbit in an attempt to destroy Jaburo, the Federation Forces headquarters in South America.

21:30   The Principality of Zeon launches Operation British. Side 2's Colony 8 is moved out of its regular orbit and begins falling toward Earth.
* Source: Entertainment Bible 39.

The Federation Forces determine that Jaburo is the target of the falling colony.
* Source: Entertainment Bible 39.

04:50   The Federation Forces assemble all fleets that are capable of intercepting the colony.
* Source: Entertainment Bible 39.

12:00   The Federation Forces begin attacking the falling colony, but their efforts are hindered by the Principality space fleet escorting it.
* Source: Entertainment Bible 39.

Ramba Ral carries out a guerilla attack on a Side 1 industrial colony, taking the Federation Forces garrison by surprise and capturing the colony's facilities intact.
* Source: Master Grade MS-05B Ramba Ral's Zaku manual.

13:15   Admiral Tianem, commander of the Federation's 4th Fleet, concludes that the Principality escort fleet must be eliminated before the falling colony can be destroyed. The Federation Forces engage the escort fleet directly.
* Source: Entertainment Bible 39.

16:10   The Federation's 4th Fleet withdraws after losing 70% of its strength.
* Source: Entertainment Bible 39.

The Federation Forces launch nuclear missiles from Earth to attack the falling colony, but are unable to destroy it. As the colony passes the critical intercept point, the Federation Forces halt their attacks, fearing that its fragments will fall across the entire planet.
* Source: Gundam Officials.

02:50   The Federation Forces begin the evacuation of Jaburo.
* Source: Entertainment Bible 39.

08:27   The falling colony enters the atmosphere.
* Source: Entertainment Bible 39.

08:35   The colony breaks up over Arabia.
* Source: Entertainment Bible 39.

08:41   The front section of the colony falls onto the east coast of Australia (local time 18:41). Meanwhile, fragments of its rear section scatter across North America and the Pacific Ocean. The impact claims 200 million lives, and the drastic climate changes caused by the colony drop lead to many more casualties.
* Source: Entertainment Bible 39. See footnote 3: Casualties of War.

09:00   The Principality escort fleet withdraws after confirming the failure of Operation British. The One Week Battle ends.
* Source: Entertainment Bible 39.

The space colonies of Side 6 declare their neutrality. Their neutral status is recognized by both the Earth Federation and the Principality of Zeon.

The Federation Forces Supreme Staff Council meets to consider its response to the Principality of Zeon. The Federation Forces reinforce their space surveillance network to monitor the Principality's activities.
* Source: Entertainment Bible 39.

19:20   The Principality of Zeon resumes Operation British. A space fleet under the command of Dozle Zabi departs from Solomon. Its destination is Side 5, also known as Loum.
* Source: Entertainment Bible 39. See footnote 4: Transit Times.

20:00   The Federation Forces detect the movements of the Principality fleet and launch their own counteroffensive.
* Source: Entertainment Bible 39.

The Battle of Loum begins. This battle will ultimately result in the virtual annihilation of the Federation Space Force and the destruction of the Side 5 colony cluster.
* See footnote 3: Casualties of War.

11:20   The Principality fleet begins its attack on Side 5. Principality forces begin attaching nuclear pulse engines to Side 5's Colony 11.
* Source: Entertainment Bible 39.

22:14   The Federation's 1st Combined Fleet, commanded by General Revil, engages the Principality fleet.
* Source: Entertainment Bible 39. Entertainment Bible 39 and Gundam Officials claim that this fleet departed from Luna II at 09:00 the previous day in response to the movements of the enemy fleet, but this doesn't allow enough time for it to reach Side 5. See footnote 4: Transit Times.

22:40   Dozle Zabi orders the Principality forces to abandon the attachment of nuclear pulse engines to the colony and concentrate on attacking the Federation fleet.
* Source: Entertainment Bible 39.

The Principality's 603rd Technical Evaluation Unit performs a combat test of the Jormungand during the Battle of Loum.
(MS Igloo: The Hidden One Year War episode 1)
* The date is specified in the episode itself.

01:00   At this point more than half of the Federation fleet has been destroyed.
* Source: Entertainment Bible 39.

03:10   The Federation Forces flagship Ananke is destroyed. General Revil is captured by the Principality's Black Tri-Stars special forces team.
* Source: Entertainment Bible 39.

04:24   The Federation fleet begins withdrawing from the battlefield.
* Source: Entertainment Bible 39. The Federation fleet is divided into three groups headed for Lagrange point 4, Lagrange point 5, and Earth. Dozle Zabi orders the Principality forces to pursue the Earth-bound group.

04:55   The Magellan-class battleship Nereid acts as a shield to cover the escape of the Federation fleet.
* Source: Entertainment Bible 39. The Nereid turns back to protect the Federation ships that are escaping to Earth.

05:14   The Nereid is destroyed.
* Source: Entertainment Bible 39.

06:00   Dozle Zabi decides to halt the operation, and the Battle of Loum comes to an end. The Principality forces return to Solomon and Side 3.
* Source: Entertainment Bible 39.

The Principality of Zeon broadcasts propaganda images of the captive General Revil throughout the Earth Sphere.
* Source: Gundam Officials.

Oliver May of the 603rd Technical Evaluation Unit completes his report on the Jormungand.
(MS Igloo: The Hidden One Year War episode 1)
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Federation Forces secretly launch an operation to retrieve General Revil.
* Source: Gundam Officials.

Using Side 6 as an intermediary, the Principality of Zeon proposes a truce with the Earth Federation. Federation and Principality representatives meet in Antarctica for peace negotiations.
* Source: Entertainment Bible 39. MS ERA 0099, however, claims that these negotiations begin on January 26.

News of General Revil's escape reaches the negotiators in Antarctica. After Revil makes a worldwide broadcast claiming that the Principality of Zeon has exhausted its fighting strength, the Federation government decides to opt for a more limited wartime treaty rather than a genuine peace accord.
* Source: Entertainment Bible 39.

The Earth Federation and the Principality of Zeon conclude the Antarctic Treaty. This agreement bans the use of nuclear weapons, prohibits colony drops and other tactics of mass destruction, and guarantees the neutrality of Side 6 and the lunar cities.

The Principality of Zeon announces the formation of the Earth Attack Force, commanded by Garma Zabi.

The Principality of Zeon launches its Earth invasion operation.

Using mass drivers on the lunar surface, the Principality of Zeon begins attacking target areas on Earth. The attacks continue until these facilities are destroyed by the remnants of the Federation fleet.
* Source: Gundam Officials.

The Principality's Earth Attack Force stages its first landing operation. The 1st Terrestrial Mobile Division is deployed to Central Asia, and proceeds onward into Europe and the Middle East.

Principality forces land at the Aral Sea and Lake Balkhash, and forces from both landing sites advance toward the Baikonur spaceport.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

After capturing the Baikonur spaceport, the Principality's Central Asian forces advance westward to the north shore of the Caspian Sea.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

A Principality force from the Aral Sea landing point moves southward into the Middle East. The force splits as it reaches the Iranian Plateau, with one group heading west toward the Persian Gulf, and the other heading east toward the Afghan border.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue westward from the Caspian Sea to Odessa.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality of Zeon deploys a resource mining unit to Central Asia. The unit lands at the north shore of the Caspian Sea.

The Principality's resource mining unit advances down the east shore of the Caspian Sea to the Elburz mountains.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality of Zeon deploys an advance decoy force to southern Mexico. This force moves south toward Panama.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's resource mining unit advances down the west shore of the Caspian Sea, over the Caucasus mountains and into northern Iraq.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Earth Attack Force stages its second landing operation. The 2nd and 3rd Terrestrial Mobile Divisions are deployed to the west and east coasts of North America, respectively.

Principality forces land near Seattle, Washington and Norfolk, Virginia.
* Source: Gundam Historica 03. While the map suggests the east coast landing site is in South Carolina, the accompanying text claims that it's near Norfolk. See footnote 5: Earth Invasion.

Principality forces commanded by Garma Zabi begin capturing Federation bases in North America. The Midnight Fenrir corps attack an air base in New Yark.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The Principality's decoy force moves northward through central Mexico.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Federation's California Base continues to mount strong resistance, and the Midnight Fenrir corps are sent to break through the base's defensive lines.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The Midnight Fenrir corps break through the defensive lines of the California Base and discover the entrance to an underground dock.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The Principality of Zeon captures the Federation Forces' California base, which now becomes the stronghold of the Principality's Earth Attack Force.

The Principality's west coast forces advance southward to the California Base, and eastward across the Rocky Mountains to the Cypress Hills.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's east coast forces advance westward across the Appalachian Mountains and the Ohio River, into Illinois.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's west coast forces advance across the Rocky Mountains into Wyoming.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Middle Eastern forces advance across the Arabian Peninsula toward Aden.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue southeast from the California Base, across the Colorado River and toward the Rio Grande.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's east coast forces advance northward to capture New Yark.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's east coast forces advance southwest across the Mississippi River and into Louisiana.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Earth Attack Force stages its third landing operation. The 4th Terrestrial Mobile Division is deployed to Oceania and Australasia.

Principality forces land near Bangkok in Thailand, on Mindanao island in the Philippines, and in the Gulf of Carpentaria in northern Australia.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Philippine forces advance southwest across the Sulu Sea into Borneo.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue eastward from the Cypress Hills, along the Missouri River and into Minnesota and Iowa.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue eastward from Wyoming, along the Arkansas River and toward the Mississippi.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Federation Forces complete the RTX-44 anti-mobile suit weapon, which later becomes the development base for the RX-75 Guntank.
* Source: Mobile Suit Variation 3.

The Principality's west and east coast forces meet along the Mississippi River.
* Source: Gundam Historica 03.

The Principality's Philippine forces advance northward into Luzon.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Southeast Asian forces advance northeast into southern China, and down the Malay Peninsula across the Strait of Malacca to Sumatra.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Australian forces advance west across the Great Sandy Desert to the Hammersley Range, and southwest to the Great Victoria Desert.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Southeast Asian forces advance northwest to the mouth of the Ganges River and into northern India.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's Australian forces launch an invasion of New Zealand via the Tasman Sea.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Black Tri-Stars carry out a special training assignment with the Principality of Zeon's Mobile Training Battalion.
* Source: Master Grade MS-05B Black Tri-Stars' Zaku manual.

The Principality of Zeon rolls out the prototype MS-06RP Zaku II.
* Source: Zeon Military File.

The Federation Forces launch Operation V, a crash program to develop mobile suits and carrier ships, and the Vinson Plan, to rebuild their space fleet. The Federation Forces begin training mobile suit pilots.

The Principality's Middle Eastern forces advance westward to the Sinai peninsula.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue northeast from Iowa, across the Mississippi River and toward the Great Lakes.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality of Zeon lands reserve forces on Earth, and deploys its "foreign legion" to Africa and the Middle East. Using captured resources and facilities, the Principality begins building up its military power.

The 5th Terrestrial Mobile Division of the Earth Attack Force lands in Egypt near Suez, and advances northward to Lebanon.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Principality's African forces advance westward across northern Libya.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Principality forces continue westward from Libya, through Algeria to the Atlas Mountains in Morocco.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

The Federation's Semovente corps destroys the 128th Supply Depot in Arizona.
(MS Igloo: The Hidden One Year War episode 2)
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Principality of Zeon completes the space fortress Solomon.

The Principality of Zeon begins deployment of the amphibious mobile suits MSM-03 Gogg and MSM-04 Acguy, and land warfare mobile suits such as the MS-06K Zaku Cannon.
* Source: Entertainment Bible 39. This source also reports that full-scale deployment of amphibious mobile suits begins in July, and their first use in a major battle is in the Battle of Midway on August 11, so this would presumably represent a limited early deployment.

The Federation Forces complete a prototype version of the RX-77 Guncannon.
* Source: MS ERA 0099.

The Federation's Semovente corps destroys the 67th Supply Depot in Arizona.
(MS Igloo: The Hidden One Year War episode 2)
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Principality's 603rd Technical Evaluation Unit performs a reevaluation of the YMT-05 Hildolfr.
(MS Igloo: The Hidden One Year War episode 2)
* The date is specified in the episode itself. During the evaluation, the Hildolfr engages the Semovente corps and destroys six captured Zaku II mobile suits and two tanks.

The Principality's African forces move southward through Sudan to the Uele River.
* Source: Gundam Historica 03. See footnote 5: Earth Invasion.

Oliver May of the 603rd Technical Evaluation Unit completes his report on the Hildolfr.
(MS Igloo: The Hidden One Year War episode 2)
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Federation Forces dispatch a naval fleet to recapture the Port Moresby base in New Guinea. The fleet is wiped out by the Principality's new amphibious mobile suits.
* Source: Gundam Ace 032. This battle, depicted in the Gundam Legacy serial, is apparently one of the first combat appearances of the MSM-03 Gogg.

The Principality of Zeon completes its defensive line, consisting of the asteroid fortresses Solomon and A Baoa Qu and the Granada lunar base.

The Principality of Zeon organizes its first submarine fleet, which is stationed in the northern Pacific Ocean.
* Source: Entertainment Bible 39.

The Flanagan Institute is established to investigate Newtype phenomena.

The Federation Forces roll out the prototype RX-76 Ball.
* Source: Master Grade Mobile Pod Ball Ver.Ka manual.

The Principality of Zeon begins production of the MS-06R-1A Zaku II.
* Source: Master Grade MS-06R-1A Black Tri-Stars' Zaku II manual.

Using Energy CAP (Capacitor) technology, the Federation Forces develop compact beam weapons that can be used by mobile suits. The first RX-78 Gundam is completed, and trial production of the RX-79 model begins.

The mobile assault carrier White Base, first of the Pegasus class, is commissioned.

The Principality of Zeon rolls out the MS-07 Gouf.
* Source: MS ERA 0099.

The Principality of Zeon completes a prototype version of the MS-09 Dom.
* Source: Mobile Suit Variation 2. See footnote 6: MS-09 Dom Series.

The Principality of Zeon completes the formation of its submarine fleets, stationing forces in the Atlantic Ocean, Indian Ocean, and Arctic Ocean. These fleets begin attacking the Federation's remaining naval fleets and disrupting trade routes.
* Source: Entertainment Bible 39.

Shin Matsunaga receives the MS-06R-1 Zaku II.
* Source: Master Grade MS-06R-1 Shin Matsunaga's Zaku II manual.

The Black Tri-Stars use the MS-06R-1A Zaku II in combat for the first time. Engaging a Federation Forces reconnaissance fleet near Side 3, they destroy one Magellan-class battleship and a formation of Saberfish fighters.
* Source: Master Grade MS-06R-1A Black Tri-Stars' Zaku II manual.

The Principality of Zeon evaluates proposals for a new space mobile suit to replace the MS-06F Zaku II. The MS-06R-2 Zaku II is rejected in favor of the MS-09R Rick Dom.
* Source: Zeon Military File. See footnote 6: MS-09 Dom Series.

The Federation Forces begin final testing of the RX-78 Gundam at Side 7. Development of the RX-78NT-1 Gundam begins at the Augusta base in North America.

Johnny Ridden receives the MS-06R-2 Zaku II.
* The Master Grade MS-06R-2 Johnny Ridden's Zaku II manual says that Ridden abandons this mobile suit in October, U.C. 0079, and according to Gundam Officials he uses it for a total of two months before that. Gundam Officials reports that Ridden destroys a total of two space battleships, four space cruisers, and five mobile suits during this time, but notes that he's also credited with a total of six warships for the entire One Year War. The 1/144 Gelgoog Cannon kit manual, which shows the kill markings next to Ridden's cockpit, supports the idea that these six warships represent his career total. See footnote 6: MS-09 Dom Series.

The Battle of Midway begins. The Federation's remaining naval fleets attempt to recapture the Hawaii naval base, and the Principality of Zeon deploys its amphibious mobile suits in their first full-scale battle.
* Source: Entertainment Bible 39.

The Battle of Midway ends in defeat for the Federation Forces.
* Source: Entertainment Bible 39.

The Principality's 603rd Technical Evaluation Unit begins an evaluation of the QEX-04M Aegir.
(MS Igloo 603)
* Source: MS Igloo Complete Setting Materials Collection.

Oliver May of the 603rd Technical Evaluation Unit completes his report on the Aegir.
(MS Igloo 603)
* Source: Gundam Ace 035. The date is specified in the story itself.

The Principality of Zeon carries out mopping-up operations against the Federation's remaining naval fleets in the Atlantic Ocean.
* Source: Entertainment Bible 39.

The Principality of Zeon launches its first attack on the Federation Forces' Jaburo headquarters. The operation ends in failure.
* Source: Entertainment Bible 39.

Bernard Wiseman is conscripted into the Principality forces.
* Source: Gundam The OVA Movies VII.

The mobile assault carrier White Base is completed.
* Source: Mobile Suit Variation 3.

Mineva Lao Zabi, the daughter of Dozle Zabi, is born.
* Source: Gundam Ace 034.

The White Base launches from Jaburo to collect the RX-series mobile suits from Side 7.
* Source: Entertainment Bible 39. The same source also claims that the White Base stops at Luna II en route, but given the tight schedule and the lack of evidence to support this claim, I've omitted it from this timeline.

A Principality special forces team commanded by Char Aznable attacks Side 7. The RX-78 Gundam enters combat to repel the attack, and the survivors of the attack are evacuated aboard the White Base.
(Mobile Suit Gundam episode 1)
* This is officially the first battle between mobile suits in Universal Century history.

08:00   A Principality mobile suit team enters Side 7's Colony 1.
* Source: Entertainment Bible 39.

08:15   The White Base docks at Side 7's Colony 1.
* Source: Entertainment Bible 39.

09:15   The RX-78 Gundam, piloted by civilian Amuro Ray, destroys two Principality mobile suits.
* Source: Entertainment Bible 39.

16:50   The White Base departs Side 7, carrying the components of the RX-series mobile suits and more than a hundred civilian refugees.
* Source: Entertainment Bible 39.

11:40   The White Base docks at Luna II.
(Mobile Suit Gundam episode 4)
* Source: Entertainment Bible 39. The Mobile Suit Gundam Official Web site, however, places this event on September 19.

The Federation Forces begin deployment of pre-production mobile suits in Southeast Asia.
* Source: The Encyclopedia of Gundam.

The Principality of Zeon begins production of the MS-09 Dom.
* Source: Master Grade MS-09R Rick Dom manual. See footnote 6: MS-09 Dom Series.

Principality forces battle a Federation patrol squadron near the Granada lunar base. The Granada defense force destroys the Magellan-class battleship Holmes and the Salamis-class cruisers Schulhof and Botany. The Black Tri-Stars are credited with the destruction of two of these ships.
* Source: Master Grade MS-06R-1A Black Tri-Stars' Zaku II manual.

06:20   The White Base departs Luna II.
(Mobile Suit Gundam episode 4)
* Entertainment Bible 39 places this event at the same time on the following day, but this doesn't leave much time for the White Base to travel to Earth, and the animated episode depicts the ship's visit to Luna II as being extremely brief. I've thus moved the White Base's departure forward one day, giving it roughly 55 hours to reach Earth. See footnote 4: Transit Times.

13:40   The White Base enters Earth's atmosphere, pursued by Char Aznable's special forces team.
(Mobile Suit Gundam episode 5)
* Source: Entertainment Bible 39. The Mobile Suit Gundam Official Web site places this event on September 20, but this seems implausibly early.

14:10   The White Base engages a Principality force commanded by Garma Zabi.
(Mobile Suit Gundam episode 6)
* Source: Entertainment Bible 39. This is presumably in standard time, so the local time on the east coast of North America would be 09:10. See footnote 7: Local Time.

The Federation Forces begin full-scale mass production of their own mobile suits.

The Flanagan Institute completes a prototype psycommu (psycho-communicator) system.

The Principality of Zeon begins deployment of the MS-09R Rick Dom.
* Source: MS ERA 0099. See footnote 6: MS-09 Dom Series.

The Principality of Zeon rolls out the prototype YMS-14 Gelgoog.
* Source: Master Grade MS-14S Char's Gelgoog manual.

The Principality of Zeon rolls out the prototype EMS-10 Zudah.
* Source: MS Igloo Complete Setting Materials Collection.

Johnny Ridden's MS-06R-2 Zaku II undergoes its fourth and final overhaul. A few days later, Ridden is assigned to the Ace Corps as a YMS-14 Gelgoog test pilot.
* Source: Master Grade MS-06R-2 Johnny Ridden's Zaku II manual.

Ian Graden takes command of an MS-06K Zaku Cannon company stationed at the California Base.
* Source: Mobile Suit Variation 2.

The Federation Forces roll out the first RGC-80 GM Cannon.
* Source: Mobile Suit Variation 3.

Personnel from the RX Project and Federation Forces staff headquarters hold a liaison conference. Based on data from the RX-78 Gundam, they decide to begin development of a Newtype mobile suit.
* Source: MSV Collection File: Earth Edition. Since the development of the RX-78NT-1 Gundam began two months earlier, this would presumably mark a change in the direction of an existing project rather than the start of a new one.

Garma Zabi launches his fourth attack on the White Base. The White Base makes contact with a Federation Forces supply corps commanded by Matilda Ajan.
(Mobile Suit Gundam episode 9)
* Source: Gundam Officials.

Garma Zabi orders the Midnight Fenrir corps to assist in his pursuit of the White Base.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

Garma Zabi, commander of the Earth Attack Force, is killed in battle against the White Base.
(Mobile Suit Gundam episode 10)
* Entertainment Bible 39 claims that this takes place at 21:50, but the animation indicates that Garma's death occurs just before dawn. Although there's some disagreement as to the location, Gundam Officials reflects the consensus view that this battle takes place in Seattle, Washington.

The White Base contacts the Federation Forces and transfers its contingent of refugees.
(Mobile Suit Gundam episode 11)
* Source: Gundam Officials.

Gihren Zabi, commander in chief of the Principality forces, speaks at the funeral of his brother Garma. His fiery speech is broadcast worldwide.
(Mobile Suit Gundam episode 12)

Ramba Ral descends to Earth with orders to avenge Garma's death. He attacks the White Base in the northern Pacific Ocean.
(Mobile Suit Gundam episode 12)

Principality forces enter Federation-controlled airspace in Earth orbit in order to gather mobile suit combat data.
(08th MS Team episode 1)
* Source: Sunrise Art Works: The 08th MS Team.

While en route to Odessa, the Midnight Fenrir corps join the defense of a Principality supply base in the Gobi Desert.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

Shiro Amada, Terry Sanders Jr., and Michel Ninorich join the 08th MS Team of the Kojima Battalion.
(08th MS Team episode 2)
* Source: Sunrise Art Works: The 08th MS Team.

The Principality's Wolf Gar team discovers a Federation Forces base camp in the Gobi Desert, and plans a surprise attack.
(Cross Dimension 0079)
* Source: Mobile Suit Gundam: Gihren's Greed The Complete. The Wolf Gar team has been separated from the main Principality force in the wake of a failed Asian offensive.

The Wolf Gar team launches its attack. The Federation forces at the base camp are wiped out, but the Albatross transport company escapes.
(Cross Dimension 0079)
* Source: Mobile Suit Gundam: Gihren's Greed The Complete.

The Principality of Zeon completes the submarine carrier Mad Angler.
* Source: The Encyclopedia of Gundam.

After crossing the Pacific Ocean, the White Base continues westward across Asia. Its crew receive orders to cross the Caspian Sea within five days.
(Mobile Suit Gundam episode 16)
* Source: Gundam Officials. See footnote 8: The Death of Ramba Ral.

The White Base battles Ramba Ral's forces near Lop Nur in the Tarim Basin.
(Mobile Suit Gundam episode 16)
* Source: Gundam Officials.

18:00   The Federation's 3rd Army, commanded by General Revil, departs from the Southampton base in Britain.
* Source: Entertainment Bible 39.

02:50   General Revil's forces cross the Strait of Dover. The Federation Forces begin their advance toward Odessa.
* Source: Entertainment Bible 39.

The Federation Forces send two naval fleets southward from Oslo, Norway to divert the Principality's submarine fleets.
* Source: Entertainment Bible 39.

The White Base attacks a Principality mining base in the Tarim Basin. Amuro Ray deserts the Federation Forces, taking the RX-78 Gundam with him.
(Mobile Suit Gundam episode 17)
* Source: The Zeon News. The timing seems reasonable given that Sayla was sentenced to three days of detention at the end of episode 16, and she is still in the brig as this episode begins.

Amuro Ray's RX-78 Gundam attacks a Principality mining base in Central Asia, near Tashkent, and battles the mobile armor MAX-03 Adzam.
(Mobile Suit Gundam episode 18)
* The Zeon News and Gundam Fact File 136 claim that this takes place on November 3, two days before Ramba Ral's death, and I've moved it forward along with that event. See footnote 8: The Death of Ramba Ral.

Ramba Ral's team detects the White Base near the town of Sodon. Ramba Ral's MS-07 Gouf is destroyed in battle.
(Mobile Suit Gundam episode 19)
* The Zeon News claims that this takes place on the same day as the previous event. See footnote 8: The Death of Ramba Ral.

Arriving at the west shore of the Caspian Sea, the White Base is attacked by Ramba Ral's team. Ramba Ral is killed in action.
(Mobile Suit Gundam episode 20)
* While Entertainment Bible 39 and Gundam Officials place this event on November 5, I've moved it forward to accommodate the events of episodes 21-24 of the television series. See footnote 8: The Death of Ramba Ral.

The Federation's ground forces arrive at their assembly point in Warsaw, Poland, and establish a field headquarters.
* Source: Entertainment Bible 39.

M'Quve orders the Midnight Fenrir corps to carry out a reconnaisance mission against the White Base.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The White Base sustains damage to its engines and is forced to land on the coast of the Black Sea.
(Mobile Suit Gundam episode 22)
* According to episode 23 of the television series, General Revil receives the White Base's request for assistance as he arrives at the European frontline headquarters. The animation also suggests that some time passes between the immobilization of the White Base and the arrival of Matilda Ajan's supply corps, since General Revil apologizes for the delay in sending supplies. I'm thus fairly certain that this event takes place between October 20 and October 31.

The Principality announces the development of the EMS-10 Zudah.
(MS Igloo: The Hidden One Year War episode 3)
* The date is specified in the episode itself. On the same day, a Zudah test team rescues a Principality transport squadron from the Federation Forces.

The Federation Forces confirm the final details of Operation Odessa. Decoy forces are dispatched to various points to camouflage the attack target.
* Source: Entertainment Bible 39. This is presumably the point at which the Lost War Chronicles video game begins.

The Principality of Zeon forms an elite Ace Corps, with the Zanzibar-class mobile cruiser Chimera as its flagship, to test the YMS-14 Gelgoog. The Ace Corps departs for the Corregidor shoal zone.
* Source: Zeon Military File. According to Gundam Officials, it's claimed that the Ace Corps encounters several Federation patrols in the Corregidor shoal zone, destroying three space battleships and eight space cruisers. However, Mobile Suit Variation 2 indicates that some of these are merely captured warships used for target practice.

Char Aznable takes command of the Mad Angler submarine fleet.
* Source: Entertainment Bible 39.

The Principality of Zeon completes a prototype version of the MP-02A Oggo.
* Source: MS Igloo Complete Setting Materials Collection.

Federation forces participating in Operation Odessa receive air reinforcements.
* Source: Entertainment Bible 39. This may be an oblique reference to the deployment of the G-Fighter and the Core Booster, worded vaguely enough to apply to both the television series and the movie continuity.

Matilda Ajan's supply corps is dispatched to help repair the White Base's engines. The G-Fighter is deployed in combat.
(Mobile Suit Gundam episode 23)
* Source: Data Collection 6.

The 08th MS Team begins surveillance of a Principality testing ground.
(08th MS Team episode 6)
* Source: Sunrise Art Works: The 08th MS Team.

The Black Tri-Stars arrive at Odessa to support the Principality forces.
(Mobile Suit Gundam episode 24)
* Source: Entertainment Bible 39.

The Principality of Zeon sends two submarine fleets northward to divert the Federation Forces deployed for Operation Odessa.
* Source: Gundam Officials.

04:00   The Black Tri-Stars attack the White Base. Matilda Ajan's supply corps completes its repairs and the ship returns to the air.
(Mobile Suit Gundam episode 24)
* Source: Gundam Officials.

06:00   The Federation Forces launch Operation Odessa. The Federation's forces begin their advance and begin deploying aircraft.
* Source: Entertainment Bible 39.

13:40   The Federation's 3rd Army, commanded by General Revil, breaks through the Principality of Zeon's first defensive line. The Principality forces retreat, contracting their defense lines.
* Source: Entertainment Bible 39.

20:00   The Principality forces launch a counterattack against the Federation's 3rd Army.
* Source: Entertainment Bible 39.

Operation Odessa reaches a stalemate, as the Federation Forces find themselves unable to break through the Principality's contracted defense lines and concentrated forces.
* Source: Entertainment Bible 39.

A Principality test corps battles a Federation patrol squadron in the Corregidor shoal zone, destroying two space cruisers, four mobile suits, and four mobile pods.
* Source: Master Grade Mobile Pod Ball Ver.Ka manual. The details of the Federation losses are from the Zeon Military File, which also notes that the Principality test corps includes an MS-06Z Psycommu System Zaku team based aboard the test ship Lemuria.

The 08th MS Team battles a Principality of Zeon mobile armor, which escapes in the direction of the Himalaya Mountains.
(08th MS Team episode 6)
* Source: Sunrise Art Works: The 08th MS Team.

The Principality's 603rd Technical Evaluation Unit performs a final evaluation of the Zudah.
(MS Igloo: The Hidden One Year War episode 3)
* The date is specified in the episode itself.

Operation Odessa ends in victory for the Federation Forces. From Europe through Asia, the Principality of Zeon's fighting power begins to collapse.
(Mobile Suit Gundam episode 25)

03:35   The Federation's 4th Army breaks through the Principality's defensive lines and advances without encountering serious resistance.
* Source: Entertainment Bible 39. This would presumably be the army previously commanded by the traitor General Elran. After the general's treachery is exposed, his forces advance through a poorly defended area of the enemy lines.

05:00   The Federation Forces begin an offensive around the opening created by the 4th Army.
* Source: Entertainment Bible 39.

06:30   The White Base attacks the Principality's mining base from the rear.
* Source: Gundam Officials.

11:00   The Principality's defensive lines contract once again. The Federation's 3rd Army arrives at Kishinev, to the east of the Carpathian Mountains.
* Source: Entertainment Bible 39.

The Midnight Fenrir corps attack a Federation artillery force advancing toward Odessa.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide. This mission takes place while the White Base is battling the Black Tri-Stars.

17:00   M'Quve, commander of the Principality forces, abandons Odessa and escapes to space aboard a Zanzibar-class mobile cruiser.
* Source: Entertainment Bible 39.

The Principality's 603rd Technical Evaluation Unit descends to Earth orbit to assist Principality forces escaping from Odessa.
(MS Igloo: The Hidden One Year War episode 3)
* Source: HG Universal Century EMS-10 Zudah manual. The Federation Forces lose a total of six mobile suits and four mobile pods in this engagement.

The Federation Forces hold a naval review. They do not publicly announce that they now have mobile suits.

Shiro Amada is retrieved from the Himalaya Mountains.
(08th MS Team episode 7)
* Source: Sunrise Art Works: The 08th MS Team. This event takes place just after dawn.

14:00   The Federation Forces at Odessa go from combat status to alert status. Mopping-up operations begin.
* Source: Entertainment Bible 39.

The Principality of Zeon officially announces its abandonment of the Odessa mining region.
(MS Igloo: The Hidden One Year War episode 3)
* The date is specified in the episode itself. According to The Zeon News, this announcement is made at the end of the day.

The Principality forces begin their withdrawal from Odessa. En route to a submarine rendezvous point, the Midnight Fenrir corps rescue a Dobday that has been immobilized by a Federation Forces attack.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The Red Dolphin submarine fleet launches a Mediterranean landing operation to aid the Principality forces escaping from Eastern Europe to Africa. After the Red Dolphin fleet is destroyed by a Federation Forces anti-submarine attack force, the Principality forces left in Eastern Europe head east toward the Baikonur spaceport.
* Source: Gundam Officials.

The Federation Forces launch an operation to recapture the Suez Canal.
* Source: Gundam Officials.

The Principality of Zeon completes the mobile armor MA-08 Big Zam.
* Source: Newtype magazine, August 1987.

Oliver May of the 603rd Technical Evaluation Unit completes his report on the Zudah.
(MS Igloo: The Hidden One Year War episode 3)
* Source: MS Igloo: 603rd Technical Evaluation Unit Interim Report.

The Principality of Zeon completes the mobile armor MAN-03 Braw Bro.
* Source: Newtype magazine, August 1987.

The Principality's Mad Angler submarine fleet, commanded by Char Aznable, detects the presence of the White Base at the Federation's Belfast base.
(Mobile Suit Gundam episode 26)
* Source: Entertainment Bible 39.

The Principality's 26th Submarine Squadron dispatches two amphibious mobile suits to attack Belfast.
(Mobile Suit Gundam episode 26)
* Source: Entertainment Bible 39. This attack is said to take place shortly after 11:00.

The Federation Forces begin full-scale deployment of the RGM-79 GM.
* Source: MS ERA 0099. Most publications identify the date only as mid-November.

The Federation Forces carry out an inquiry regarding Shiro Amada's conduct.
(08th MS Team)
* Source: Sunrise Art Works: The 08th MS Team.

The Principality of Zeon begins production of beam weapons for the MS-14 Gelgoog.
* Source: Master Grade MS-14S Char's Gelgoog manual.

The Midnight Fenrir corps join with other Principality forces retreating from Odessa and act as decoys to cover their escape.
(Zeonic Front)
* Source: Zeonic Front: Mobile Suit Gundam 0079 Complete Guide.

The 11th Autonomous Mechanized Corps stages a night raid on a Zeon base and battles the RX-79BD-1 Blue Destiny.
(The Blue Destiny)
* This battle takes place in Europe following the completion of Operation Odessa. See footnote 9: The Blue Destiny.

17:00   The Principality's 26th Submarine Squadron again attacks Belfast with amphibious mobile suits. Spy 107 takes advantage of the confusion to board the White Base.
(Mobile Suit Gundam episode 27)
* Source: Entertainment Bible 39.

01:38   The White Base departs for Jaburo.
(Mobile Suit Gundam episode 27)
* Source: Entertainment Bible 39.

The Mad Angler begins its pursuit of the White Base.
* Source: Entertainment Bible 39.

The Federation Forces launch a major offensive in Australia.
(Rise from the Ashes)
* Source: Gundam Side Story 0079: Rise From The Ashes novelization. The Federation's Australian forces are divided into three groups. Green Echidna heads north toward Darwin, Yellow Quokka heads south toward Adelaide, and Red Possum is sent to capture Alice Springs, the center of the Principality forces' rail network.

05:20   The Federation's White Dingo team engages Principality forces in Australia's Rainbow Valley.
(Rise from the Ashes)

05:00   Flanagan Boone of the 26th Submarine Squadron contacts Spy 107 and learns the White Base's destination.
(Mobile Suit Gundam episode 28)
* Source: Gundam Officials.

The Mad Angler attacks a Federation Forces anti-submarine attack force, sinking a Himalaya-class aircraft carrier.
(Mobile Suit Gundam episode 28)
* Source: Entertainment Bible 39.

Flanagan Boone uses a mobile armor and two amphibious mobile suits to attack the White Base as it crosses the Atlantic Ocean.
(Mobile Suit Gundam episode 28)
* Source: Gundam Officials.

11:30   The White Dingo team enters the occupied city of Alice Springs and negotiates the withdrawal of the Principality forces.
(Rise from the Ashes)
* After taking control of Alice Springs, the Red Possum force splits in two. One force heads north to support Green Echidna, the other south to support Yellow Quokka.

The African front expands as the Federation Forces launch a major offensive.
* Source: MS ERA 0099.

The Principality of Zeon adopts a new designation for its Newtype mobile suits and mobile armors. The new mobile suit which is being developed under the model number MS-16X is reclassified as the MSN-02 Zeong.
* Source: Zeon Military File.

The White Base arrives at the Federation Forces' Jaburo headquarters. The Mad Angler discovers the entrance to Jaburo's spacecraft docks, and Char Aznable contacts the California Base to request reinforcements for an attack on Jaburo.
(Mobile Suit Gundam episode 29)
* Source: Entertainment Bible 39.

The Mad Angler withdraws to the mouth of the Amazon River. The California Base begins preparations for an attack on Jaburo.
* Source: Entertainment Bible 39.

The Principality of Zeon launches an airborne assault on Jaburo, the Federation Forces headquarters in South America.
(Mobile Suit Gundam episode 29)

03:20   The Mad Angler dispatches an advance team of amphibious mobile suits up the Amazon River to search for entrances into Jaburo.
* Source: Entertainment Bible 39.

05:40   The advance team discovers Jaburo's entrances. The Federation Forces detect the advance team and issue an alert.
* Source: Entertainment Bible 39.

06:30   A formation of Gaw attack carriers appears over Jaburo and begins deploying mobile suits. The Federation Forces go to combat status and launch interceptor aircraft.
* Source: Entertainment Bible 39.

07:30   After landing, the Principality mobile suits form small teams and begin searching for entry routes into Jaburo.
* Source: Entertainment Bible 39.

07:40   Char Aznable joins the advance team of amphibious mobile suits.
* Source: Entertainment Bible 39.

07:50   Char Aznable engages Amuro Ray's RX-78 Gundam in combat.
* Source: Entertainment Bible 39.

08:30   Having lost half its fighting strength, the Principality mobile suit force begins withdrawing.
* Source: Entertainment Bible 39.

09:00   The Principality forces complete their withdrawal from Jaburo. They are attacked by Federation pursuit forces.
* Source: Entertainment Bible 39.

The 11th Autonomous Mechanized Corps recovers the Blue Destiny from a wrecked transport plane.
(The Blue Destiny)
* Source: Gundam Side Story: The Blue Destiny novelization. This event takes place in North America. The Blue Destiny novelization indicates that the date is roughly December 10, and reports that You Kajima of the 11th Autonomous is assigned to pilot the Blue Destiny the following day. See footnote 9: The Blue Destiny.

The Principality's 604th Technical Evaluation Unit begins an evaluation of the MSM-07Di Ze'Gok.
(MS Igloo: Apocalypse 0079 episode 1)
* Source: MS Igloo Complete Setting Materials Collection.

14:07   The White Dingo team intercepts a Gaw attack carrier at Simpson's Gap.
(Rise from the Ashes)

The Principality's 603rd Technical Evaluation Unit continues the evaluation of the Ze'Gok.
(MS Igloo: Apocalypse 0079 episode 1)
* Source: MS Igloo Complete Setting Materials Collection.

The Federation Forces complete their recapture of the Suez Canal, and begin mopping-up operations in Africa and North America.
* These mopping-up operations continue until December 15. The completion of the Suez Canal operation is as per Gundam Officials.

The Principality's Cyclops special forces team descends to Earth to capture the RX-78NT-1 Gundam. The Cyclops team joins with Principality forces on Earth and prepares to attack a Federation Forces base in the Arctic Circle.
(Gundam 0080)
* Source: Gundam Officials.

The Federation Forces lay siege to a Principality base on the Tibetan Plateau.
(08th MS Team episode 10)
* Source: Master Grade MS-07B-3 Gouf Custom manual.

The Principality's 603rd Technical Evaluation Unit performs a final evaluation of the Ze'Gok.
(MS Igloo: Apocalypse 0079 episode 1)
* Source: MS Igloo Complete Setting Materials Collection. The Ze'Gok destroys one Federation space battleship and four space cruisers as they launch from Jaburo.

The Principality of Zeon begins deployment of the MS-14 Gelgoog.
* Source: MS ERA 0099.

18:00   The Cyclops team departs from the Novaya Zemlya base aboard a Jukon-class submarine.
(Gundam 0080)
* Source: Gundam Officials.

15:00   The Cyclops team attacks the Federation's arctic base. The shuttle carrying the RX-78NT-1 Gundam escapes into space.
(Gundam 0080 episode 1)
* Source: Gundam Officials.

15:25   The Cyclops team withdraws from the arctic base.
* Source: Gundam Officials.

The Cyclops team returns to Granada.
* Source: Gundam Officials.

The shuttle carrying the RX-78NT-1 Gundam arrives at Side 6's Libot colony. The Gundam is secretly transferred to a Federation medical center.
(Gundam 0080 episode 1)
* Gundam Officials and the DVD liner notes claim that this takes place on December 12, but I've moved it forward one day. See footnote 10: Operation Rubicon.

The Principality's 603rd Technical Evaluation Unit begins an evaluation of the GM Camouf.
(MS Igloo 603)
* Source: MS Igloo Complete Setting Materials Collection.

Principality forces from Granada attack Side 6's Libot colony and battle the Federation Forces garrison. Alfred Izuruha meets Bernard Wiseman.
(Gundam 0080 episode 1)
* Gundam Officials and the DVD liner notes claim that this takes place on December 13, but I've moved it forward one day. See footnote 10: Operation Rubicon.

A Principality warship squadron is attacked by an unknown Federation weapon in the Side 4 shoal zone.
(MS Igloo 603)
* Source: Gundam Ace 039.

Federation amphibious forces land on the eastern coast of Africa.
* First mentioned in a character profile in Entertainment Bible 39, this event also appears in the timeline published in Gundam Officials.

15:30   Bernard Wiseman is assigned to the Cyclops team.
(Gundam 0080 episode 2)
* The time is specified in the episode's dialogue.

23:00   The Principality of Zeon launches Operation Rubicon. The Cyclops team departs from Granada.
(Gundam 0080 episode 2)
* Gundam Officials and the DVD liner notes claim that this takes place on December 14, but I've pushed it forward one day to allow time for the journey to Side 6. See footnote 10: Operation Rubicon.

23:00   Four warships, including the White Base, launch from Jaburo to divert the Principality forces. Each ship takes a different course. (Local time is 19:00.)
(Mobile Suit Gundam episode 31)
* Source: Master Grade MS-09R Rick Dom manual. The local time is specified in the episode's dialogue. Although there's no information as to the identity of the other ships, they could perhaps be other vessels of the Pegasus class. See footnote 11: Departure From Jaburo.

The White Base battles the Principality's Kamel Squadron in Earth orbit.
(Mobile Suit Gundam episode 32)
* Source: Master Grade MS-09R Rick Dom manual.

01:00   The Federation Forces begin their space offensive. A Federation fleet commanded by Admiral Tianem launches from Jaburo. (Local time is 21:00 on December 13.)
* Source: Data Collection 2. The local time is specified in the episode's dialogue. According to Entertainment Bible 39, more than 20 Magellan-class battleships and 60 Salamis-class cruisers are launched into orbit at this point. See footnote 11: Departure From Jaburo.

Oliver May of the 603rd Technical Evaluation Unit completes his report on the GM Camouf.
(MS Igloo 603)
* Source: Gundam Ace 033. The date is specified in the story itself.

You Kajima of the 11th Autonomous Mechanized Corps uses the Blue Destiny to attack an enemy missile base near the California Base.
(The Blue Destiny)
* Source: Gundam Side Story: The Blue Destiny novelization. According to the Blue Destiny comic and novelization, the other mobile suits of the 11th Autonomous participate in the main assault on the California Base. You Kajima later joins the battle, and the Blue Destiny is heavily damaged in combat with Principality ace pilot Nimbus Schterzen. See footnote 9: The Blue Destiny.

A Principality special forces team escapes from the California Base with samples of the biological weapon Astaroth.
(Rise from the Ashes)
* Source: Gundam Models Manual 2.

06:00   Principality forces from Granada launch a second attack on Side 6's Libot colony. The Cyclops team smuggles a mobile suit into the colony during the battle.
(Gundam 0080 episode 2)
* Source: Gundam Officials.

11:00   The Federation Forces launch a mopping-up operation at the California Base.
* Source: Gundam Side Story: The Blue Destiny novelization. This source reports that the outcome of the battle is determined by the first evening, although the fighting continues for at least three more days.

Alfred Izuruha and Bernard Wiseman infiltrate a secret Federation Forces base.
(Gundam 0080 episode 3)
* Source: DVD liner notes.

The Principality of Zeon completes the prototype mobile armor MAN-08 Elmeth.
* Source: Newtype magazine, August 1987.

Side 6's foreign ministry orders all Principality of Zeon vessels to leave its airspace.
(Gundam 0080 episode 4)
* Source: Gundam Officials. Perhaps Char's Zanzibar, which docks at Side 6 in episode 34 of the television series and remains there until after the Battle of Solomon begins, has a special exemption.

10:15   The White Dingo team engages Principality forces at the Carrieton opencut mine.
(Rise from the Ashes)

The White Base battles the Conscon Squadron near Side 6.
(Mobile Suit Gundam episode 34)
* Source: Master Grade MS-09R Rick Dom manual.

18:00   A Cyclops team mobile suit launches a diversionary attack on Side 6's Libot colony. Meanwhile, the team's other members infiltrate the secret Federation Forces base that houses the RX-78NT-1 Gundam.
(Gundam 0080 episode 4)
* Source: Gundam Officials. According to the colony's police, 246 people are killed and 572 injured during this mobile suit battle.

The last survivor of the Cyclops team contacts a Principality spy at Side 6's Libot colony. He learns that Commander Killing plans to attack the colony with nuclear weapons.
(Gundam 0080 episode 5)
* Source: Gundam Officials.

The Principality's 603rd Technical Evaluation Unit performs an evaluation of the YOP-04 Balor.
(MS Igloo 603)
* Source: MS Igloo Complete Setting Materials Collection.

The 11th Autonomous Mechanized Corps pursues the stolen RX-79BD-2 Blue Destiny to an abandoned space colony at the former Side 5.
(The Blue Destiny)
* This date is an estimate based on the Blue Destiny novelization. See footnote 9: The Blue Destiny.

The White Base arrives at the former Side 5 to rendezvous with the Federation's 3rd Fleet.
* Source: Master Grade MS-09R Rick Dom manual. This is when the Texas Colony battle of the Gundam III movie would take place.

09:42   The White Dingo team discovers a Principality submarine base in the abandoned city of Adelaide.
(Rise from the Ashes)

The Federation Forces launch an attack on the asteroid fortress Solomon, headquarters of the Principality's Space Attack Force.
(Mobile Suit Gundam episode 35)

18:10   After approaching Solomon via the remains of Side 4, the Federation's 3rd Fleet launches assault ships to create a beam-diffusing screen.
* Source: Entertainment Bible 39.

18:35   Captain Wakkein, commander of the Federation's 3rd Fleet, orders its ships to launch their mobile suit forces.
* Source: Entertainment Bible 39.

18:50   The Federation's Tianem Fleet, concealed by the remains of Side 1, completes the deployment of its Solar System weapon. The Solar System is focused on Solomon's 6th Gate.
* Source: Entertainment Bible 39.

19:10   The Tianem Fleet approaches Solomon.
* Entertainment Bible 39 claims that the Tianem Fleet also launches its mobile suits at this point. According to the animation, however, the fleet doesn't launch its own mobile suits until Admiral Tianem receives word of the Gundam's entry into Solomon, which happens an hour later.

19:30   Dozle Zabi orders the remaining Principality mobile suit forces to retreat to Solomon.
* Entertainment Bible 39 claims that Dozle sorties in the Big Zam at this point. According to the animation, however, Dozle doesn't board the Big Zam until after Federation mobile suits have reached Solomon.

20:20   Federation mobile suit forces enter Solomon.
* Source: Entertainment Bible 39.

20:25   The Principality of Zeon dispatches a fleet from Granada to aid Solomon.
* Source: Entertainment Bible 39. Based on the usual travel times, it seems unlikely that this fleet could ever have reached Solomon in time.

20:40   Dozle orders the Principality forces to abandon Solomon. He begins a direct attack on the Tianem Fleet, using the mobile armor MA-08 Big Zam.
* Source: Entertainment Bible 39.

20:55   The Big Zam destroys the Magellan-class battleship Titan, flagship of the Tianem Fleet.
* Source: Entertainment Bible 39.

21:15   The Big Zam is destroyed, and Dozle Zabi is killed. The remaining Principality forces complete their withdrawal from Solomon.
* Source: Entertainment Bible 39.

The Federation Forces complete their mopping-up operations and occupy Solomon. The asteroid fortress is renamed Konpeitoh.
* Source: Entertainment Bible 39.

The Principality of Zeon completes the preparation of the Solar Ray system.
* Source: Gundam Officials. This is presumably derived from episode 40 of the Mobile Suit Gundam television series, which states that the Mahar colony was evacuated four days earlier.

The White Dingo team is assigned to pursue the Principality special forces team carrying the Astaroth samples.
(Rise from the Ashes)
* Source: Gundam Side Story 0079: Rise From The Ashes novelization.

00:00   The Principality of Zeon dispatches a squadron from Granada to attack Side 6's Libot colony.
* Source: Gundam Officials.

10:55   The Federation Forces intercept a Principality squadron en route to Side 6.
* Source: Gundam Officials.

14:00   The last member of the Cyclops team attempts to destroy the RX-78NT-1 Gundam, in order to prevent the annihilation of the Libot colony.
(Gundam 0080 episode 6)
* Source: Gundam Officials.

15:28   The White Dingo team attacks a Principality mining base near Broken Hill.
(Rise from the Ashes)

The White Base enters the former Side 5 in pursuit of fleeing Principality forces. A battle begins in and around the Texas colony.
(Mobile Suit Gundam episode 37)
* This is my own estimate, allowing the White Base a day to travel each way between Solomon and Side 5. The Mobile Suit Gundam Official Web site, however, places this event on December 25.

18:04   The Principality of Zeon launches simultaneous attacks on the Federation Forces' Torrington and Charleville bases in Australia.
(Rise from the Ashes)
* The White Dingo team assists in the defense of the Torrington base. According to the Gundam Side Story 0079: Rise From The Ashes novelization, Principality ace pilot Visch Donahue participates in the attack on Charleville.

The Principality's Australian forces begin the evacuation plan codenamed Staircase to the Moon.
(Rise from the Ashes)
* Although the Federation Forces assume that the enemy plan is to escape to space via the Hughenden HLV base in eastern Australia, the Principality forces in fact intend to make their way to the west coast of Australia and escape to Africa.

General Revil arrives at Konpeitoh. The Principality's autonomous 300th Squadron carries out a long-range attack on the asteroid fortress.
(Mobile Suit Gundam episode 39)
* Gundam Officials claims that this takes place on December 25, but that would leave no time for the White Base's adventures at Texas Colony. The animation also indicates that it happens shortly before the Braw Bro's sortie.

The Federation Forces' "Immortal 4th Team" is equipped with the RGM-79C GM.
* Source: Master Grade RGM-79C GM manual.

The White Base battles the mobile armor MAN-03 Braw Bro.
(Mobile Suit Gundam episode 39)
* According to the animation, this happens the day before the events of episode 40.

The Principality determines that the next target of the Federation Forces is the space fortress A Baoa Qu. The 603rd Technical Evaluation Unit is ordered to join the defense of A Baoa Qu.
(MS Igloo: Apocalypse 0079 episode 2)
* The date is specified in the story itself. The test support ship Jotunheim is assigned to a combat battalion under the command of Herbert Von Kuspen.

The magnet coating process is applied to Amuro Ray's RX-78 Gundam.
(Mobile Suit Gundam episode 40)
* The Master Grade RX-78-2 Gundam manual claims that this is done on December 27, but the animation indicates that it happens around the time the Revil Fleet departs Solomon.

The Principality's 300th Squadron engages a Federation patrol squadron. The mobile armor MAN-08 Elmeth destroys two Federation space cruisers.
(Mobile Suit Gundam episode 40)
* This event takes place before the Revil Fleet leaves Konpeitoh, and the episode states that it happens on the same day as the Elmeth's next sortie.

The Federation Forces launch Operation Star One, whose target is the space fortress A Baoa Qu and the Principality of Zeon's homeland of Side 3. A Federation fleet commanded by General Revil departs from Konpeitoh.
(Mobile Suit Gundam episode 40)

The Principality's 300th Squadron joins a force commanded by Kycilia Zabi, which then engages the Federation's 13th Autonomous Fleet. The Elmeth destroys two more Federation space cruisers.
(Mobile Suit Gundam episode 40)
* This event takes place after the Revil Fleet leaves Konpeitoh, and the episode states that it happens on the same day as the Elmeth's previous sortie.

The 603rd Technical Evaluation Unit is dispatched to the Granada lunar base to intercept Federation Forces decoy fleets.
(MS Igloo: Apocalypse 0079 episode 2)
* The date is specified in the story itself. The Federation Forces lose two space cruisers and six mobile pods in this engagement.

The Principality's Ace Corps attacks a Federation fleet headed for A Baoa Qu, destroying two space cruisers, one transport ship, 14 mobile suits and 22 space fighters.
* Source: Mobile Suit Variation 2. See footnote 12: Operation Clarion.

Kycilia Zabi's forces again attack the Federation's 13th Autonomous Fleet. The Elmeth is destroyed.
(Mobile Suit Gundam episode 41)
* This takes place just before the activation of the Solar Ray.

20:20   The Phoebe, flagship of the Federation's Revil Fleet, receives a transmission from the Principality battleship Great Degwin.<