
| Year | Event |
| 2273 |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 3 | Sarek | Sarek said he had worked on the treaty for 93 years |
| Series : | TNG Season 3 |
| Episode : | Sarek |
| Comment : | Sarek said he had worked on the treaty for 93 years |
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