
| Year | Event | ||||||
| 2065 | |||||||
| 2242 | |||||||
| 2244 | |||||||
| 2250 | 
         ● [5]
         Kirk meets Gary Mitchell while teaching at Starfleet Academy. Mitchell sets Kirk up with a blonde lab technician in order to distract him and so have an easier time in classes; the attempt is so successful that Kirk almost marries the woman. [3]
       
 | ||||||
| 2264 | |||||||
| 2265 |  ● [3]
         Elizabeth Dehner, a psychiatrist studying crew reactions, joins the USS Enterprise. [3] 
 
         ● [3]
         The USS Enterprise penetrates the barrier at the edge of the galaxy. Two of the crew develop powerful psychic abilities as a result, and are killed to protect the ship. [3]
       
 | 
| Canon source | Backstage source | Novel source | DITL speculation | 
| # | Series | Season | Source | Comment | 
| 1 | TOS | 1 | Where No Man Has Gone Before | Valiant was said to have been lost 200 years before the episode | 
| 2 | TOS | 1 | Where No Man Has Gone Before | His personnel file said he was 23 years old in 2265 | 
| 3 | TOS | 1 | Where No Man Has Gone Before | |
| 4 | TOS | 1 | Where No Man Has Gone Before | Her personnel file said she was 21 years old in 2265 | 
| 5 | Star Trek Chronology | Page 43 | 
| Series : | TOS Season 1 | 
| Episode : | Where No Man Has Gone Before | 
| Comment : | Valiant was said to have been lost 200 years before the episode | 
| Series : | TOS Season 1 | 
| Episode : | Where No Man Has Gone Before | 
| Comment : | His personnel file said he was 23 years old in 2265 | 
| Series : | TOS Season 1 | 
| Episode : | Where No Man Has Gone Before | 
| Series : | TOS Season 1 | 
| Episode : | Where No Man Has Gone Before | 
| Comment : | Her personnel file said she was 21 years old in 2265 | 
| Book : | Star Trek Chronology | 
| Comment : | Page 43 | 
| © Graham & Ian Kennedy | Page views : 15,925 | Last updated : 26 Oct 2025 |