- According to a speech given by John Gill, the Zeon colony on Ekos was established shortly after this year. (TOS: "Patterns of Force")
- According to the Star Trek Chronology and other reference works, 2218 was the year in which the Federation made first contact with the Klingon Empire, supposedly based on a line spoken by Dr. McCoy in the I AM ERROR episode "Day of the Dove". Not only have events in the I AM ERROR pilot "Broken Bow" proven this false, but it appears that line of dialogue never actually made it to the finished episode.
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