1973

History of the Doctor Who Universe

 * Mike Yates plays Widow Twankey in the UNIT staff panto of Aladdin ("No Future").


 * A film version of "The Three Musketeers" is released. Genetic material from its prirncipal stars, Michael York, Oliver Reed, Richard Chamberlain, and Frank Finlay, will be used to create Reprises of D'Artaganan, Athos, Aramis, and Porthos in Europa in the far future ("Managra").


 * The Cult of the Second Coming of Ed Hill ends soon after its founder, Maddie, dies from a drug overdose ("Revolution Man").


 * 26th March - Noël Coward dies in Jamaica ("Mad Dogs and Englishmen").

January

 * 06 - The Three Doctors Episode 2 First Broadcast


 * 13 - The Three Doctors Episode 3 First Broadcast


 * 19 - Max Adrian, who played King Priam in "The Myth Makers," dies in Wilford.


 * 20 - The Three Doctors Episode 4 First Broadcast


 * 27 - Carnival of Monsters Episode 1 First Broadcast

February

 * 03 - Carnival of Monsters Episode 2 First Broadcast


 * 10 - Carnival of Monsters Episode 3 First Broadcast


 * 17 - Carnival of Monsters Episode 4 First Broadcast


 * 24 - Frontier in Space Episode 1 First Broadcast

March

 * 03 - Frontier in Space Episode 2 First Broadcast


 * 10 - Frontier in Space Episode 3 First Broadcast


 * 17 - Frontier in Space Episode 4 First Broadcast


 * 24 - Frontier in Space Episode 5 First Broadcast


 * 31 - Frontier in Space Episode 6 First Broadcast

April

 * 07 - Planet of the Daleks Episode 1 First Broadcast


 * 14 - Planet of the Daleks Episode 2 First Broadcast


 * 21 - Planet of the Daleks Episode 3 First Broadcast


 * 28 - Planet of the Daleks Episode 4 First Broadcast

May

 * 05 - Planet of the Daleks Episode 5 First Broadcast


 * 12 - Planet of the Daleks Episode 6 First Broadcast


 * 19 - The Green Death Episode 1 First Broadcast


 * 26 - The Green Death Episode 2 First Broadcast

June

 * 02 - The Green Death Episode 3 First Broadcast


 * 09 - The Green Death Episode 4 First Broadcast


 * 16 - The Green Death Episode 5 First Broadcast


 * 18 - Roger Delgado is killed in an automobile accident outside Neveshir, Turkey.


 * 23 - The Green Death Episode 6 First Broadcast

July

 * 30 - Guy Middleton, who played Colonel Attwood in "The Highlanders," dies.

December

 * 15 - The Time Warrior Episode 1 First Broadcast


 * 22 - The Time Warrior Episode 2 First Broadcast


 * 29 - The Time Warrior Episode 3 First Broadcast

Unknown date

 * Peter Bathurst, who played Hensell in "The Power of the Daleks" and Chinn in "The Claws of Axos," dies.