2319

2319 was the year a computer displayed to the Fifth Doctor, Nyssa and Tegan Jovanka. (PROSE: Fear of the Dark)

However, the year this novel is set in is inconsistent:
 * Jim Boyd gives the year as 2382. This is supported by the back cover and Tegan referring to the time period as 400 years after 1982.
 * The computer display dated "2319.01.12.", only 63 years before 2382. However, Tegan refers to this as being "over one hundred and fifty years ago." The Doctor later says that Ravus Oldeman has been in stasis "for over one hundred and sixty years." Jyl Stoker, Nyssa, and Oldeman use "one hundred and sixty years" at points in the novel.
 * Tegan thinks that Oldeman "may have been pushing two hundred and thirty" after being in stasis, putting his age as a minimum of 70 when he entered stasis. Oldeman he claimed to be "young and fit" before he entered stasis.
 * The Doctor says Oldeman is "extremely fit for two hundred and sixty-five." This would make Ravus Oldeman a minimum of ~105 years old when he went into stasis. The Doctor later says Oldeman is "pushing three hundred years old."