On 31 December, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1966 - Episode three of The Highlanders was first broadcast on BBC1.
- 1966 - Part two of the TV Comic story The Extortioner was first published.
- 1977 - Part seven of the TV Comic story The Aqua-City was first published.
- 1988 - The Official Doctor Who & the Daleks Book was first published by St Martin's Press.
- 2006 - Part one of Blood of the Daleks was first broadcast on BBC7.
- 2008 - The Torchwood Magazine comic story "The Storm" was first published.
- 2013 - The Doctor Who Adventures comic story By the Book was first published.
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