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| Timeline for 2157 |
2151 • 2152 • 2154 • 2155 • 2156 • 2158 • 2161 • 2162 • 2163 |
Events
Unknown dates
- The 22nd century Dalek invasion of Earth began, leading to a decade of occupation. (TV: The Dalek Invasion of Earth)
- Other sources give the beginning of the Dalek invasion as 2158.
- Cats became extinct on Earth. (PROSE: Lucifer Rising)
- The Seventh Doctor and Roz Forrester were stranded on the planet Mars. (PROSE: GodEngine)