20 November

20 November was a date.
In 1910, during the Mexican civil war, soldiers were abducted by the War Lords as part of the War Chief's plot to weaponise the human race, subsequently being returned by the Time Lords. (TV: The War Games, PROSE: Time Traveller's Diary)
In 1987, an event called "Energize" took place. (TV: Father's Day)
In 2059, Andy Stone made his last report at Bowie Base One. He noted that the filter for their water supply was busted, which led to the Flood's invasion and the self-destruction of the base the next day. (TV: The Waters of Mars)