The 15th episode of Doctor Who airs on the BBC. This is part two of the story now collectively known as Marco Polo. The entirety of this story has since been lost by the BBC archives.
This episode aired on February 29th of a leap year, and its anniversary therefore only occurs every four years!
This timeline entry leads to an entry covering this entire Doctor Who serial; there are plans to write new episodic entries in the future. You can support this effort!
Order Earl Green’s book VWORP!1 from theLogBook.com Store