Prime Timeline
   | Year | Event | 
   | 1853 | 
         ● [1]
         The conflicts between the Antareans and the Denobulans end. Both sides will retain a deep hatred of one another for at least the next three centuries. [1]
      
 | 
   | 1953 | 
         ● [2]
         The Denobulans begin using genetic engineering, with generally positive effect. [3]
 | 
   | 2144 | 
         ● [4]
         Phlox speaks to his son Mettus for the last time prior to 2153, the two having fallen out over Phlox's attitude towards the Antarans. [4]
      
 | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References
| # | Series | Season | Source | Comment | 
| 1 | ENT | 2 | The Breach | Phlox said the last conflict had been 300 years ago | 
| 2 | ENT | 4 | Borderland | Phlox said they began doing this over two centuries ago. This is 201 years before the episode. | 
| 3 | ENT | 4 | Borderland | Phlox said they began doing this over two centuries ago. This is 201 years before the episode | 
| 4 | ENT | 2 | The Breach | Phlox says he has not spoke to his son in nearly ten years; this is 9 years before the episode |