| Year | Event |
| 2350 |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 2 | The Icarus Factor | |
| 2 | Star Trek Chronology | Page 108 | ||
| 3 | VOY | 1 | Caretaker | |
| 4 | VOY | 5 | Juggernaut | |
| 5 | TNG | 5 | Conundrum | Date listed on her personnel record readout |
| 6 | DS9 | 1 | Emissary | This is four years before his graduation. Note this is inconsistent with Defiant in which Sisko says he has been in Starfleet for 20 years, i.e. since 2351. Presumably Sisko rounded the number slightly. |
| 7 | DS9 | 4 | Rules of Engagement | O'Brien says he has been in Starfleet for 22 years. |
| 8 | TNG | 7 | Journey's End |
| Series : | TNG Season 2 |
| Episode : | The Icarus Factor |
| Book : | Star Trek Chronology |
| Comment : | Page 108 |
| Series : | VOY Season 1 |
| Episode : | Caretaker |
| Series : | VOY Season 5 |
| Episode : | Juggernaut |
| Series : | TNG Season 5 |
| Episode : | Conundrum |
| Comment : | Date listed on her personnel record readout |
| Series : | DS9 Season 1 |
| Episode : | Emissary |
| Comment : | This is four years before his graduation. Note this is inconsistent with Defiant in which Sisko says he has been in Starfleet for 20 years, i.e. since 2351. Presumably Sisko rounded the number slightly. |
| Series : | DS9 Season 4 |
| Episode : | Rules of Engagement |
| Comment : | O'Brien says he has been in Starfleet for 22 years. |
| Series : | TNG Season 7 |
| Episode : | Journey's End |
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