Timeline

c. 250,000 BCE	The Precursors appeared on the galactic scene
c. 22,000 BCE	The Faz joined the Sentient Milieu
c. 20,000 BCE	Dnyarri discovered by the Ur-Quan
c. 17,500 BCE	Dnyarri overthrown, the Path of Now and Forever and the Eternal Doctrine formulated, the Words uttered and the Mael-Num driven from their homeworld.
1940	The Ur-Quan Kzer-Za begin forming plans to attack Earth
2015	Small war of 2015, leading to the storage of all weapons of mass destruction in so called Peace Vaults
2019	Creation of the first Androsynth
2025	First year without war on Earth
2035	Cataclysm caused by a Deep Child makes Syra uninhabitable forcing Syreen to flee
2075	Yehat discover and "uplift" the Shofixti
2085	The Clone Revolt
c. 2098	Ur-Quan Kzer-Za enslave first species in our region of space (the Thraddash)
	Ur-Quan Kzer-Za defeat the Umgah
2111	Ur-Quan Kzer-Za subjugate the Spathi
c. 2112	Ur-Quan Kzer-Za defeat the Ilwrath
2112	The Chenjesu first contact Earth
2116	Founding of the Alliance of Free Stars
2119	The Insult (most probably; possibly in 2126)
2134	Discovery of a Precursor facility on Unzervalt
	Chenjesu and Mmrnmhrm defeated and slave-shielded on Procyon II
	Humans defeated and slave-shielded on Earth
2142	Destruction of the Gg by the Ur-Quan Kohr-Ah
c. 2145	Destruction of the Burvixese by the Ur-Quan Kohr-Ah
2155	Arrival of the Precursor ship at Earth; Start of the Star Control II game

Graphical timeline of the Ur-Quan Conflicts

The events marked by blue are known to have occurred within a specific year or time frame. Those events marked by red represent the best-guess estimates as to when the actual events occurred.

Notes and references

See here.