Prime Timeline
   | Year | Event | 
   | 2103 | 
       ● [1]
         The ECS Horizon is built. It is rumoured that Zefram Cochrane signed the casing of the warp reactor. [1] | 
   | 2144 | 
         ● [2]
         Reed attends a family reunion - his last until at least 2153. [2]
      
 | 
   | 2149 | 
       ● [3]
         Mayweather leaves the ECS Horizon so he can join Starfleet. [3] | 
   | 2150 | 
         ● [4]
         Captain Archer requests a personal evaluation from the former commanding officers of the candidates he is reviewing for the position of helm officer. Ensign Mayweather's father responds with a single line claiming that his son is the most natural rudder and stick man he has ever known, and Archer would be a fool not to select him. The letter wins Mayweather the post. [4]
      
 | 
   | 2153 | 
         ● [5]
         Travis Mayweather visits his home ship, the ECS Horizon, for the first time since leaving to join Starfleet. He is saddened to learn of his father's recent death. [5]
      
 | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References
| # | Series | Season | Source | Comment | 
| 1 | ENT | 2 | Horizon | The ship is said to be 50 years old | 
| 2 | ENT | 2 | Horizon | Reed says his last family reunion was almost a decade ago; this is 9 years before the episode | 
| 3 | ENT | 2 | Horizon | Reed says this happened four years ago | 
| 4 | ENT | 2 | Horizon | Archer says this happened two and a half years ago | 
| 5 | ENT | 2 | Horizon |  |