List of events which occurred on the 18th of September.
- The inaugural issue of The New York Times is published.
- American musician Jimi Hendrix dies.
- NASA's Voyager 1 space probe takes the first photo of the Earth and moon together.
Calendar of publication and production
- TOS comic: "Vibrations in Time" continues with the 4th installment, in TV21 Weekly #104.
- TOS comic: "The Planet of No Return", part 1 is reprinted in Mighty TV Comic #1292.
- The 12th installment of TOS comic: "Husian Gambit" is published in daily newspapers by the Los Angeles Times Syndicate.
- The 59th installment of TOS comic: "Quarantine" is published.
- The 14th installment of TOS comic: "A Merchant's Loyalty" is published.
- VOY episode: "Elogium" airs.
- VOY episode: "The Chute" airs.
- TOS - Year Five: Odyssey's End comic: "Issue 6" is released by IDW Publishing.