12 December

12 December was a date.

Holidays and observances
12 December was the date of Mandatory Celebration Day on Terra Alpha, a winter celebration. (PROSE: Time Traveller's Diary)

Events
In 1781, Melanie Bush arrived in Berkshire from 2003 and met Henry Hallam. (AUDIO: Catch-1782)

In 1894, the Paternoster Gang dealt with temporal radiation at the London Zoo. (PROSE: The Evolution Episode)

In 1901, while on an expedition to the ruins of Babylon, time sensitive linguist John Lafayette stumbled across the Path to Babylon, circa 570 BC. (PROSE: Walking to Babylon)

In 1916, the Third Doctor, Jo Grant and Liz Shaw somehow misplaced the TARDIS in St Petersburg, Russia. (PROSE: The Wages of Sin)

In 2003, the Sixth Doctor and Melanie Bush met up with Mel's uncle, Dr John Hallam, at the centenary celebration for the National Foundation for Scientific Research (UK) in Berkshire. Hallam became a temporary companion of the Doctor when the duo had to use the TARDIS to go back in time to 1782 to save Mel from a temporal paradox involving a Hallam family ancestor. (AUDIO: Catch-1782)

In 2009, Brenda sent out a letter to the readers of Paul Magrs' book series about herself and Effie. (PROSE: Brenda's B&B)

In 2360, the Eleventh Doctor and River Song visited Calderon Beta, where they encountered two future versions of River and one of the Doctor. (HOMEVID: First Night, Last Night)

Births and deaths
In 1973, Madeline Burton died as a result of a drug addiction. (PROSE: Revolution Man)

Other
According to a calendar on the Snowcap base, 12 December 1986 was a Friday. (TV: The Tenth Planet)

Behind the scenes

 * According to the publisher's summary for PROSE: Time Traveller's Diary, the Second Manifestation of Kroll took place on 12 December 2528, but this information does not appear in the book itself.