1980

October
"Shada"

December

 * 8 - Former Beatle John Lennon is shot and killed by Mark David Chapman outside his home in New York City ("The Left-Handed Hummingbird").


 * 25 - Professor Edward Travers, CBE, dies ("Downtime").

January

 * 05 - The Horns of Nimon Episode 3 First Broadcast


 * 12 - The Horns of Nimon Episode 4 First Broadcast

February

 * 04 - David Whitaker dies

August

 * 6 - Barry Justice, who played King Charles IX in "The Massacre of St Bartholomew's Eve," committs suicide in London.


 * 30 - The Leisure Hive Episode 1 First Broadcast

September

 * 06 - The Leisure Hive Episode 2 First Broadcast


 * 13 - The Leisure Hive Episode 3 First Broadcast


 * 20 - The Leisure Hive Episode 4 First Broadcast


 * 27 - Meglos Episode 1 First Broadcast

October

 * 04 - Meglos Episode 2 First Broadcast


 * 11 - Meglos Episode 3 First Broadcast


 * 18 - Meglos Episode 4 First Broadcast


 * 25 - Full Circle Episode 1 First Broadcast

November

 * 01 - Full Circle Episode 2 First Broadcast


 * 08 - Full Circle Episode 3 First Broadcast


 * 15 - Full Circle Episode 4 First Broadcast


 * 22 - State of Decay Episode 1 First Broadcast


 * 29 - State of Decay Episode 2 First Broadcast

December

 * 06 - State of Decay Episode 3 First Broadcast


 * 8 - Former Beatle John Lennon, who appeared as himself in "The Chase," is shot and killed by Mark David Chapman outside his home in New York City.


 * 13 - State of Decay Episode 4 First Broadcast