Events which occurred on the 15th of September.
- Charles Darwin discovers the Galápagos Islands while aboard the HMS Beagle.
- Tanks are deployed in combat for the first time, in World War I.
Calendar of publication and production
- TAS episode: "Yesteryear" airs.
- The 13th installment of TOS comic: "Shell Game" is published in Valiant and TV21 #103.
- TOS comic: "The Legacy of Lazarus" is released in Spanish.
- The 9th installment of TOS comic: "Husian Gambit" is published in daily newspapers by the Los Angeles Times Syndicate.
- The 56th installment of TOS comic: "Quarantine" is published.
- The 11th installment of TOS comic: "A Merchant's Loyalty" is published.
- The 28th installment of TOS comic: "The Retirement of Admiral Kirk" is published.
- Star Trek Magazine, U.S. Issue 77 is released by Titan Magazines.
- TOS - Year Five - Experienced in Loss comic: "Issue 24" is released by IDW Publishing.