1977

Queen Elizabeth II's Silver Jubilee occurred in 1977. (TV: Mawdryn Undead)

Dated events
On 25 May, the Sixth Doctor and Frobisher attended the premiere of Star Wars at Mann's Chinese Theatre in Hollywood. The Doctor noted that one of its stars, Peter Cushing, looked familiar and seemed to remember once meeting his granddaughter. (PROSE: Mission: Impractical)

On 1 June, Queen Elizabeth II's Silver Jubilee was celebrated in the United Kingdom. Nyssa and Tegan Jovanka found themselves at Brendon Public School, where they met retired UNIT Brigadier Alistair Lethbridge-Stewart. In the course of events, the Brigadier met a future version of himself from 1983, causing a paradox and leading to him suffering partial amnesia due to the Blinovitch Limitation Effect. (TV: Mawdryn Undead)

Unknown dates
Professor Amelia Rumford took a policeman's truncheon with her on a lecture tour to New York City in case she got mugged. Instead she was arrested for carrying an offensive weapon. (TV: The Stones of Blood)

Dr Fendelman accidentally awakened a fragment of the Fendahl while conducted temporal experiments with a time fissure created by a broken War TARDIS. The Fourth Doctor and Leela arrived at Fendahlman's experiment and stopped the Fendahl from fully manifesting. (TV: Image of the Fendahl, PROSE: The Taking of Planet 5)

The Seventh Doctor arrived briefly in Lewisham as he hunted the Timewyrm. (PROSE: Timewyrm: Revelation)

The Eighth Doctor arrived in Delchester and discovered the reason for Delchester United's recent bad run. (COMIC: Doctor Who and the Nightmare Game)

Dominique van Gysegham's first husband died. (AUDIO: The Reaping)

Luke Tillyard was born. (PROSE: Salva Mea)

The Fourth Doctor encountered the Monosaron Acolytes in North London. (AUDIO: Suburban Hell)

Other realities
In a parallel universe, Bob Baker and Dave Martin created K-9 for the TV show Doctor Who. (COMIC: The Girl Who Loved Doctor Who)