1975

According to Mary, 1975 was the year in which Toshiko Sato was born, in May. (TV: Greeks Bearing Gifts) Her official Torchwood records, however, held that her date of birth was instead 19 September 1981. (TV: Exit Wounds)

On 24 December, the Seventh Doctor and his companions Ace and Hex defeated the Kellenian invasion of Earth in New York City. (PROSE: Presence)

The Fifth Doctor, Nyssa and Tegan Jovanka visited London. (PROSE: The Sands of Time)