1 April

1 April was celebrated on Earth as April Fools' Day. In 1963, Ian Chesterton sent one of his Coal Hill School students, Little Titch Critchley, to the supplies cupboard for "a left-handed blackboard rubber". Later that morning, Ian started a snowball fight with Mr Okehurst, shouting, "April fool!" That afternoon, when John Brent tried to tell his father about the snowmen which had been animated by the Cold, Captain Brent thought his son was playing an April Fools' joke. (PROSE: Time and Relative)

On 1 April 1939, the Spanish Civil War, which began in 1936, ended. (PROSE: History 101)