23 January

On 23 January 1963, Kim Philby disappeared. (PROSE: Endgame)

In the Daft Dimension, an issue of Televisual Comic was dated to 23 January 1965, a Monday. (COMIC: The Secret History of Life Before Doctor Who Magazine!)

In 1986, the Rock & Roll Hall of Fame inducted its first members. (PROSE: Time Traveller's Diary)

Behind the scenes
Despite what is shown in The Secret History of Life Before Doctor Who Magazine!, 23 January actually fell on a Saturday in 1965.