16 October

16 October was a date.
==Holidays and observances==
16 October marked the alignment of the Thirteen Worlds. (PROSE: Time Traveller's Diary)
==Events==
In 1829, the Seventh Doctor and Bernice Summerfield set sail on the Mermaid. (PROSE: Of the Mermaid and Jupiter)
In 1978, the Eleventh Doctor and Vastra arrived in Cardiff to find Sontarans changing history by invading Earth. The Doctor and Vastra defeated the Sontarans, but realised that they had only witnessed the beginning of a Sontaran plot to alter all of time. (GAME: Legacy)