20 November

On 20 November 1910, during the Mexican civil war, soldiers were abducted by the War Lords, subsequently being returned by the Time Lords. (TV: The War Games)

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)