List of events which occurred on the 21st of June.
Calendar of publication and production
- TOS comic: "Skin Deep" begins with the 1st installment, in Joe 90: Top Secret #23.
- The 49th installment of TOS comic: "Double Bluff" is published in daily newspapers by the Los Angeles Times Syndicate.
- The 57th installment of TOS comic: "The Savage Within" is published.
- The 113th installment of TOS comic: "The Wristwatch Plantation" is published.
- The 38th installment of TOS comic: "Goodbye to Spock" is published.
- Graphic Novel Collection, Volume 39 is released by Eaglemoss Collections.