Events which occurred on the 20th of March.
Events[]

- 1727
- Physicist Sir Isaac Newton dies.
- 1800
- Invention of the electric battery is announced on Earth.
- 1922
- The United States Navy commissions its first aircraft carrier.
- 1943
- Mao Tse-Tung becomes Chairman of the Communist Party of China.
- 1969
- The Beatles musician John Lennon marries Yoko Ono.
- 2156
- Romulan Admiral Valdore asks First Consul T'Luadh to investigate apparent Vulcan technology being possessed by Haakonans, who assigns the mission to Talok. (ENT - The Romulan War novel: Beneath the Raptor's Wing)
- 2163
- Trenkanshent sh'Lavan has dinner with her cousin Aranthanien ch'Revash aboard the Andorian Imperial Guard light cruiser USS Thejal, remarking that T'Pol and other Vulcans should be brought to justice for their actions during Vulcan-Andorian conflicts. (ENT - Rise of the Federation novel: A Choice of Futures)
- 2164
- Charles Tucker III secretly visits T'Pol on Earth. (ENT - Rise of the Federation novel: Tower of Babel)
- 2248
- The Constitution-class starship USS Yorktown is commissioned. (ST reference: Star Trek Maps)
Appendices[]
Calendar of publication and production[]

- 1971
- TOS comic: "Slaves of the Frogmen" begins with the 1st installment, in TV21 Weekly #78.
- 1980
- The 12th installment of TOS comic: "The Real McCoy" is published in daily newspapers by the Los Angeles Times Syndicate.
- 1981
- The 62nd installment of TOS comic: "Heads of State" is published.
- 1982
- The 20th installment of TOS comic: "The Wristwatch Plantation" is published.
- 1989
- TNG episode: "Contagion" airs (week of).
- 1990
- Star Trek: The Animated Series is released on LaserDisc.
- 1994
- TNG episode: "Genesis" and DS9 episode: "Profit and Loss" air (week of).
- 1995
- VOY episode: "Prime Factors" airs.
- 2002
- ENT episode: "Rogue Planet" airs.
- 2007
- Mirror Universe anthology: Obsidian Alliances is published by Pocket Books.
- 2013
- TOS - Countdown to Darkness comic: "Issue 3" is released by IDW Publishing.
- 2019
- ST - The Q Conflict comic: "Issue 3" is published.
- 2024
- ST - A Savage World of Glass and Bone comic: "Part 6" is released.
External link[]
20 March article at Memory Alpha, the wiki for canon Star Trek.