Prime Timeline
   | Year | Event | 
   | 2165 | 
         ● [1]
         Guinan had her last encounter with Q prior to 2365. [1]
      
 | 
   | 2265 | 
       ● [2]
         The Borg destroy Guinan's home planet, scattering the few surviving El-Aurian people. [2] | 
   | 2365 | 
       ●
         Q hurls the Enterprise-D some seven thousand light years through space to star system J-25. Whilst there the ship encounters the Borg collective, marking the official contact between the Federation and this species. Although Q terminates the encounter, the Borg send a ship towards Federation space. [3] | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References
| # | Series | Season | Source | Comment | 
| 1 | TNG | 2 | Q Who | Q said their dealings were two centuries ago | 
| 2 | TNG | 2 | Q Who | Guinan said this happened a century ago | 
| 3 | TNG | 2 | Q Who |  |