
| Year | Event | 
| 2255 | 
| Year | Event | 
| 2255 | 
| Canon source | Backstage source | Novel source | DITL speculation | 
| # | Series | Season | Source | Comment | 
| 1 | TNG | 3 | The Ensigns of Command | |
| 2 | Star Trek Chronology | Page 46 | ||
| 3 | Star Trek IV : The Voyage Home | |||
| 4 | Star Trek XI | Stated in the movie as being 3 years before graduation, which was in turn 25 years after his birth | ||
| 5 | Star Trek XI | 
| Series : | TNG Season 3 | 
| Episode : | The Ensigns of Command | 
| Book : | Star Trek Chronology | 
| Comment : | Page 46 | 
| Film: | Star Trek IV : The Voyage Home | 
| Film: | Star Trek XI | 
| Comment : | Stated in the movie as being 3 years before graduation, which was in turn 25 years after his birth | 
| Film: | Star Trek XI | 
| © Graham & Ian Kennedy | Page views : 24,646 | Last updated : 16 Jan 2015 |