U.C. 0001

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

U.C. 0027

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

U.C. 0040

40% of the human population (roughly 5 billion people) have emigrated to space.

U.C. 0045

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.

U.C. 0050

The human population reaches 11 billion people, 9 billion of whom have emigrated to space. The following year, the Earth Federation halts construction of new space colonies, and the colonization program is effectively ended.

U.C. 0052

Zeon Zum Deikun moves to Side 3 to spread his ideology. Deikun argues that humanity should complete its migration to space, and that the space colonies should be treated as independent nations.

U.C. 0058

Side 3 declares its independence, and the Republic of Zeon is established.

U.C. 0060

The Federation Forces begin an arms buildup, organizing the Earth Federation Space Force and converting Luna II into a military base.

U.C. 0065

The researchers of the Minovsky Physics Society observe a unique electromagnetic effect, which leads to the discovery of the Minovsky particle.

U.C. 0068

Zeon Zum Deikun dies under suspicious circumstances, and Degwin Sodo Zabi succeeds him as leader.

U.C. 0069.08.15

Degwin Sodo Zabi declares himself sovereign and establishes the Principality of Zeon. Zeon Zum Deikun's followers are purged, and his children Casval and Artesia are taken to Earth for their protection.

U.C. 0070

The Principality of Zeon experiments with scattering Minovsky particle to jam radar, and completes a mega particle cannon based on Minovsky physics. The Principality of Zeon commissions its first Chivvay-class space cruiser.The Federation Forces begin production of Salamis- and Magellan-class space warships.

U.C. 0071

The Principality of Zeon begins development of new weapons for use in the era of Minovsky physics.

U.C. 0072

In the asteroid belt, the Principality of Zeon begins construction of the asteroid base Axis as a way-station for its Jupiter Fleet.

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

U.C. 0074.02

The Principality of Zeon completes a prototype version of the MS-05 Zaku. This prototype mobile suit is equipped with a super-compact fusion reactor based on Minovsky physics.

U.C. 0075.05

The Principality of Zeon rolls out a combat-ready version of the MS-05 Zaku. Later this year, the first mobile suit training battalion is formed.

U.C. 0075.07

The Principality of Zeon commissions its first Musai-class space cruiser, the first warship designed to carry mobile suits.

U.C. 0076.04

The Principality of Zeon expands its mobile suit production facilities, and begins mass production of the MS-05 Zaku.

U.C. 0076.12

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

U.C. 0078.01

The Principality of Zeon begins mass production of a new model of mobile suit, the MS-06 Zaku II.

U.C. 0078.03

The Federation Forces launch the RX Project, a secret mobile suit development program.

U.C. 0078.10

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.

U.C. 0079.01.03

The One Year War begins. The Principality of Zeon declares war against the Earth Federation and launches surprise attacks on Side 1, 2, and 4. During this first week of the war, the indiscriminate use of nuclear, biological, and chemical weapons claims the lives of 2.8 billion space colonists.

The Principality of Zeon forces a space colony out of orbit in an attempt to destroy Jaburo, the Federation Forces headquarters. Though the colony drop misses its target, it hits Sydney, Australia and drastically alters Earth's climate.

The space colonies of Side 6 declare their neutrality.

U.C. 0079.01.15

The Battle of Loum begins at Side 5. The Federation Space Force is wiped out, and the Principality of Zeon captures fleet commander General Revil. The Side 5 colony cluster is completely destroyed.

U.C. 0079.01.31

With half the human race wiped out and both sides exhausted, representatives of the Principality of Zeon and the Earth Federation meet in Antarctica to negotiate a peace treaty. Though the war continues, the Antarctic Treaty 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.

U.C. 0079.02

The Principality of Zeon forms an Earth Attack Force, commanded by Garma Zabi. The following month, the Earth Attack Force carries out a series of drop operations and captures most of Europe, Asia, Africa, and North America.

U.C. 0079.03.01

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.

U.C. 0079.03.04

The Principality of Zeon deploys a resource mining unit to Central Asia.

U.C. 0079.03.11

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.

U.C. 0079.03.13

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

U.C. 0079.03.18

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

U.C. 0079.04.01

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.

U.C. 0079.04.04

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.

U.C. 0079.06

In space, the Principality of Zeon completes its defensive line, consisting of the asteroid fortresses Solomon and A Baoa Qu and the lunar base Granada.  The Flanagan Institute is established to investigate Newtype phenomena.

U.C. 0079.07

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.

U.C. 0079.08

The Federation Forces begin final testing of the RX-78 Gundam, and other prototype mobile suits, at the Side 7 research colony. Development of the RX-78NT-1 Gundam begins at the Augusta Base in North America.

U.C. 0079.09.18

A Principality special forces team commanded by Lt. Commander Char Aznable attacks Side 7. The RX-78 Gundam enters combat, destroying two Zakus, and the survivors of the attack are evacuated aboard the White Base. [Mobile Suit Gundam, episode 1]

U.C. 0079.10

The Federation Forces begin mass production of their own mobile suits. The Flanagan Institute completes a prototype psycommu (psycho-communicator) system.

U.C. 0079.10.04

Captain Garma Zabi, commander of the Earth Attack Force, falls in battle. [Mobile Suit Gundam, episode 10]

U.C. 0079.10.06

Admiral Gihren Zabi, supreme military leader of the Principality of Zeon, speaks at his brother Garma's funeral. His fiery speech is broadcast worldwide. [Mobile Suit Gundam, episode 10] En route to Earth, Shiro Amada meets Principality test pilot Aina Sahalin. [The 08th MS Team, episode 1]

U.C. 0079.11.07

In Eastern Europe, the Federation Forces launch Operation Odessa. [Mobile Suit Gundam, episode 25]

U.C. 0079.11.09

Operation Odessa ends in victory for the Federation. From Europe through Asia, the Principality of Zeon's fighting power begins to collapse.  The 08th MS Team intercepts the mobile armor Apsalus at its desert testing ground. [The 08th MS Team, episode 7]

U.C. 0079.11.20

The Federation Forces begin full-scale deployment of the RGM-79 GM.  The Federation Forces carry out an inquiry regarding Shiro Amada's conduct. [The 08th MS Team, Miller's Report]

U.C. 0079.11.25

The Federation Forces capture Alice Springs, Australia. [Gundam Side Story 0079]

U.C. 0079.11.30

The Principality of Zeon launches a drop operation against Jaburo, the headquarters of the Federation Forces. The attack, led by Captain Char Aznable, ends in failure. [Mobile Suit Gundam, episode 29]

U.C. 0079.12.05

The Federation Forces launch mopping-up operations in Africa and North America.

U.C. 0079.12.07

The Federation Forces lay siege to a Principality base on the Tibetan Plateau. [The 08th MS Team, episodes 10-11]

U.C. 0079.12.08

The Principality of Zeon begins deployment of the MS-14 Gelgoog.

U.C. 0079.12.09

The Principality of Zeon's Cyclops Team attacks a Federation Forces base in the Arctic circle. [Gundam 0080, episode 1]

U.C. 0079.12.13

The Principality of Zeon attacks Side 6's Libot colony. [Gundam 0080, episode 1]

U.C. 0079.12.14

The Federation Forces begin their space offensive, launching their rebuilt space fleet from Jaburo. [Mobile Suit Gundam, episode 31]

U.C. 0079.12.15

The Cyclops Team infiltrates Side 6's Libot colony in order to locate and destroy the Gundam NT-1. [Gundam 0080, episode 2]

U.C. 0079.12.19

The Cyclops Team attacks the secret Federation base where the Gundam NT-1 is stored. [Gundam 0080, episode 4]

U.C. 0079.12.20

A Principality commander decides to attack the Libot colony with nuclear weapons. [Gundam 0080, episode 5]

U.C. 0079.12.24

The Federation Forces attack the asteroid fortress Solomon. Solomon is captured, and Space Attack Force commander Dozle Zabi falls in battle. [Mobile Suit Gundam, episodes 35-36]

U.C. 0079.12.25

The last member of the Cyclops Team attempts to destroy the Gundam NT-1, in order to prevent the annihilation of the Libot colony. [Gundam 0080, episode 6]

U.C. 0079.12.26

The Principality of Zeon attacks the Federation Forces' Torrington base in Australia. [Gundam Side Story 0079]

U.C. 0079.12.30

The Principality of Zeon activates its Solar Ray weapon. A third of the Federation fleet is wiped out, along with the Principality's own Sovereign Degwin. [Mobile Suit Gundam, episode 41]

U.C. 0079.12.31

The Federation Forces attack the space fortress A Baoa Qu. Anticipating the Principality's defeat, Captain Aiguille Delaz and his followers withdraw from the battlefield. [Mobile Suit Gundam, episodes 42-43]

U.C. 0080.01.01

The One Year War ends. The Earth Federation and the re-established Republic of Zeon sign a peace accord at the lunar city of Granada.