1981
- Alexander Joseph Luthor is born. He will be nicknamed Lex. 1989
- Kal-El arrives on Earth with a meteor shower, is adopted by two Earthlings, and is given the Earth name Clark Jerome Kent. 2001(approximate Earth ages: 14 Clark, 20 Lex)
- Clark and Lex meet and strike up a friendship. 2005(18C 24L)
- Their friendship stilted by secrecy, Clark and Lex's relationship degenerates into what they will later officially consider enemies. 2007(20C 26L)
- Lex is visited by 170 year old Kal-El, who has travelled back in time from the year 2157 to procure his assistance. 2020(33C 39L)
- After fifteen years of antagonism, Clark and Lex reconcile. Their new friendship is without secrecy. 2025(38C 44L)
- Clark and Lex become lovers. 2032(45C 51L)
- Clark and Lex bond in the Kryptonian tradition, each receiving a permanent Kryptonian mark on his skin. They honeymoon at Quai Voltaire in Paris, France. 2035(48C 54L)
- With hopes of matching Kal's lifespan and remaining with him over the centuries, Lex begins undergoing anti-aging treatments developed by the Kryptonian A.I. 2039(52C 58L)
- The Clark Jerome Kent persona dies and only Kal-El/Superman remains. 2047(60C 66L)
- Following a fad, Lex picks up an additional X on his nickname and becomes known as Lexx. 2065(78C 84L)
- With Superman's encouragement, the nations of Earth band into one force, the Earthen Cooperative. Money, hunger, homelessness, and destitution are abolished. 2069(82C 88L)
- 100 years after Earthlings set foot on the moon, the first manned mission to Mars is a rousing success. Interplanetary travel becomes a worldwide obsession. 2075(88C 94L)
- Humanity has become self-sufficient, Superman has become unnecessary, and Lexx and Kal decide to keep permanent residence at the Fortress of Solitude. 2080(93C 99L)
- Due to research undertaken by Kal-El and Lexx using the Kryptonian A.I., all human disease is effectively cured. 2081(94C 100L)
- Lexx celebrates his 100th birthday. 2087(100C 106L)
- Kal celebrates his 100th Earthen ‘birthday.’ 2089(102C 108L)
- Due to his continuing anti-aging treatments, Lexx grows some sparse body hair. 2099(112C 118L)
- Earth joins a hastily created Intergalactic Coalition with five other species. 2100(113C 119L)
- The Intergalactic Coalition, badly designed and badly maintained, fails miserably. The six involved species remain friendly but independent. 2101(114C 120L)
- Kal and Lex celebrate the 100th anniversary of their meeting. 2120(114C 120L)
- Earth accepts an invitation to join a seven millennia old Intergalactic Coalition. Over the next decade, the planet becomes a respected and useful member. 2145(158C 164L)
- A statis chamber which contains cells necessary to Lexx's survival is compromised. Neither the A.I. nor Kal or Lexx is aware of the breach. 2156: Timeline after adjustment(169C 175L)
- Kal brings 2007 Lex into the future while Lexx is still healthy. Lex's cells are harvested to refill the inventory that will keep Lexx young for another millenium. 2156: Timeline before adjustment(169C 175L)
- A crazed Kryptonian, Shiar-Da, destroys the statis chamber in the hopes of murdering Lexx from a distance, unaware that the cells within are already useless. 2157: Timeline before adjustment(170C 176L)
- Kal brings 2007 Lex to the future. Lexx dies, causing Lex to decide to change time. (see 2156: Timeline after adjustment) by bipolypesca