27 December

By 27 December, Christmas time was considered to be "dead". (PROSE: The King of Terror)

In 1967, the largest known cave-shaft in the world, the Cave of Swallows, was discovered in San Luis Potosi, Mexico. A guide for time travellers suggested that it was possibly a Silurian base. (PROSE: Time Traveller's Diary)

According to a calendar on the Snowcap base, 27 December 1986 was a Saturday. (TV: The Tenth Planet)

Emma-Louise Cowell began work at a new London branch of a fashion house the day after Boxing Day after leaving Cardiff on Christmas Eve. (TV: Out of Time)