Prime Timeline
   | Year | Event | 
   | 2053 | 
         ● [1]
         World War III kills 600 million people and leaves very few governments on Earth. [1]
      
 
         ● [2]
         The six O’Neil colonies in Earth’s L5 Lagrange point survive the World War III intact. [2]
      
 
       ● [3]
         The Vulcans make first contact with the Arkonians. The initial contact goes well but the Arkonians prove hostile and difficult to deal with, and eventually contact is broken off. [3] | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References
| # | Series | Season | Source | Comment | 
| 1 |  |  | Star Trek : First Contact | The war is stated to have happened ten years prior to 2063 | 
| 2 |  |  | The Sundered |  | 
| 3 | ENT | 2 | Dawn | T'Pol said that this happened almost a hundred years ago; this is 99 years before the episode |