| Timeline |
| Years of interest |
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No information about specific years in the 109th century was known to exist. |
In the 109th century, Kepzyr was supposed to be a thriving mid-level civilisation. After the intervention of Frank Reade Jr in Kepzyr's past, it became a wasteland. (PROSE: Frank Reade, Jr.'s Electric Time Canoe [+]Steve Mollmann, Wildthyme in Purple (Iris Wildthyme, 2011).)
The Sixth Doctor estimated that Carmen was originally from the 108th or 109th century based on her time machine. (AUDIO: The Raincloud Man [+]Eddie Robson, Main Range (Big Finish Productions, 2008).)