Universal Century 0001
- With Earth's population at 9 billion, a space colonization program begins. Construction of the first space colony is commenced and on the year it is completed the era is changed to the Universal Century. Also The CMC is founded.

0027
- The City Von Braun is completed on the moon.

0035
- Construction of Side 3 begins.

0058
- Side 3 declares its independence from the Earth Federation.

0059
- Earth Federation begins to sanction Side 3.

0060
- Earth Federation launches the 60s Rearmament and Reinforcement Plan.

0067
- The Earth Federation rejects colony automony

0069
- Duchy of Zeon is established.

0070
- Earth Federation launches the 70s Rearmament and Reinforcement Plan.
- Zeon completes the mega particle gun.

0073
- Zeon completes the new weapon called the mobile suit.

0077
- Riah Republic in Side 6 declares its independence and the forces loyal to independence movement take control of local military forces. EF loyalists fight back. Zeon assists the independents.
- Independents win.

0078
- Gihren Zabi and most of the Zabi family are assasinated. A new duke of Zeon is named, Janus Venge. He was uninvolved in the assasination atempt.
- The conspirators for the assination are discovered and executed.
- Duke Venge discloses the fact that the conspirators where Federation diplomats. Accuses the Earth Federation of trying to install their own government in Side 3. (Whether it was true or not is unknown. Conspirators were not actually questioned. Not public knowledge.)

0079
- War between the Earth Federation and the Duchy of Zeon begins.
- Zeon invades Side 4 and destroys all EF forces there and takes control of the colony cluster.
- Riah Republic declares its neutrality in the war. Both sides accept neutrality.
- The Zeon military makes a push towards Earth and is able to push a hole through the EF's blockade. Zeon establishes its own battle group in Earth orbit and then gains a foot hold on Earth.
- The Earth Fedration uses its mobile suits for the first time in a counter-attack against Zeon forces in orbit of Earth. Both sides take heavy loses and Zeon is surprised by the advanced nature of the EF mobile suits.
- Zeon Military forces begin to experiment with new mobile suits designs to keep up with EF advancements.

RPG begins at this point.