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On 3月12日, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1966 - "The Plague" was first broadcast on BBC1.
- 1966 - Part four of the TV Comic story Space Station Z-7 was first released in issue seven hundred and forty-three.
- 1977 - Episode three of The Talons of Weng-Chiang was first broadcast on BBC1.
- 1977 - Part six of the TV Comic story The False Planet was first published.
- 1981 - DWM 51 was first released by Marvel Comics.
- 1987 - DWM 123 was first released by Marvel Comics.
- 1998 - DWM 263 was first released by Marvel Comics.
- 1999 - The Curse of Fatal Death was first broadcast as part of the BBC's Comic Relief night.
- 2000 - The Marian Conspiracy was first released by Big Finish.
- 2008 - From Out of the Rain was first broadcast on BBC Three.
- 2008 - Issue two of the IDW comic story Agent Provocateur was first published.
- 2009 - DWA 106 was first released by BBC Magazines.
- 2009 - The audiobook version of Doctor Who and the Cybermen was first released.
- 2014 - DWA 341 was first released by Immediate Media Company London Limited.
- 2015 - The Entropy Plague was first released by Big Finish Productions.
- 2015 - DWFC 41 was first released by Eaglemoss Collections.
- 2019 - The Kamelion Empire was first released by Big Finish.