Question: Players is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who", it features the Sixth Doctor and Peri meeting Winston Churchill during the Boer War and prior to the abdication of the would-be king Edward VIII, was King of the United Kingdom and the Dominions of the British Empire, and Emperor of India, beginning on which date?

full_context: Document 1: World Game (novel): World Game is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It features the Second Doctor (Patrick Troughton) and the Lady Serena and is set during "Season 6B". It is also a partial sequel to another Dicks' Past Doctor Adventure, "Players" and documents the return of the Countess.
Document 2: Warmonger (novel): Warmonger is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It features the Fifth Doctor and Peri.
Document 3: Edward VII: Edward VII (Albert Edward; 9 November 1841 – 6 May 1910) was King of the United Kingdom and the British Dominions and Emperor of India from 22 January 1901 until his death in 1910.
Document 4: George VI: George VI (Albert Frederick Arthur George; 14 December 1895 – 6 February 1952) was King of the United Kingdom and the Dominions of the British Commonwealth from 11 December 1936 until his death. He was the last Emperor of India and the first Head of the Commonwealth.
Document 5: Endgame (Doctor Who): Endgame is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It features the Eighth Doctor, as well as the Players.
Document 6: Players (Doctor Who novel): Players is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It features the Sixth Doctor and Peri meeting Winston Churchill during the Boer War and prior to the abdication of the would-be king Edward VIII. Flashbacks scenes feature the Second Doctor meeting Winston Churchill in 1915 during the First World War, these sequences serving as a partial prequel to Dick's subsequent novel "World Game", which is set during Season 6B.
Document 7: His Majesty's Declaration of Abdication Act 1936: His Majesty's Declaration of Abdication Act 1936 (1 Edw. 8 & 1 Geo. 6 c. 3) was the Act of the Parliament of the United Kingdom that recognised and ratified the abdication of King Edward VIII and passed succession to his brother King George VI. The act also excluded any possible future descendants of Edward from the line of succession. Edward VIII abdicated in order to marry his lover, Wallis Simpson, after facing opposition from the governments of the United Kingdom and the Dominions.
Document 8: Instruments of Darkness: Instruments of Darkness is a BBC Books original novel written by Gary Russell and based on the long-running British science fiction television series "Doctor Who". It features the Sixth Doctor and Mel.
Document 9: Revenge of the Judoon: Revenge of the Judoon is a BBC Books original novella written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It features the Tenth Doctor and his companion Martha Jones. This paperback is part of the Quick Reads Initiative sponsored by the UK government, to encourage literacy. It has a similar look to BBC Books' other new series adventures, except for its much shorter word count, being a paperback and not being numbered as part of the same series. To date it is the one of only five novels based upon the revived series that have not been published in hardcover: the first, "I am a Dalek", was published in May 2006; the second, "Made of Steel", was published in March 2007; the fourth, "The Sontaran Games", was published in February 2009; and the fifth, "Code of the Krillitanes", was published in March 2010. These four books are also part of the Quick Reads Initiative.
Document 10: Edward VIII abdication crisis: In 1936, a constitutional crisis in the British Empire arose when King-Emperor Edward VIII proposed to marry Wallis Simpson, an American socialite who was divorced from her first husband and was pursuing a divorce of her second.
Document 11: George V: George V (George Frederick Ernest Albert; 3 June 1865 – 20 January 1936) was King of the United Kingdom and the British Dominions, and Emperor of India, from 6 May 1910 until his death in 1936.
Document 12: List of Prime Ministers of King Edward VIII: King Edward VIII was the King of the United Kingdom and the Dominions and colonies of the British Commonwealth, Emperor of India, from 20 January to 11 December 1936, when he abdicated the throne.
Document 13: The Eight Doctors: The Eight Doctors is a BBC Books original novel written by Terrance Dicks and based on the long-running British science fiction television series "Doctor Who". It was the first of the Eighth Doctor Adventures range and features the Eighth Doctor and introduces his new companion, Sam Jones.
Document 14: Edward VIII: Edward VIII (Edward Albert Christian George Andrew Patrick David; 23 June 1894 – 28 May 1972) was King of the United Kingdom and the Dominions of the British Empire, and Emperor of India, from 20 January 1936 until his abdication on 11 December the same year.
Document 15: 1936 in the United Kingdom: Events from the year 1936 in the United Kingdom. The year is notable for the death of George V early in the year, the accession of his son Edward VIII (previously styled David, Prince of Wales) to the throne, and then Edward VIII's abdication, resulting in the accession to the throne of his younger brother George VI (previously Albert, Duke of York).
ground_truth: 20 January 1936