1638

November

 * 23 - The Doctor launches the Nemesis statue into orbit after battling Lady Peinforte with the help of Roundheads at a meadow in Windsor. The Doctor calculates that the statue will pass Earth every 25 years before returning in 1988, and sets his watch ("Silver Nemesis").


 * Unknown Date - Sometime after her initial defeat by the Doctor, Lady Peinforte hires a mathematician to calculate when the Nemesis will return to Earth. Once a date of 23 November, 1988 has been calculated, the Lady and her henchman Richard Maynard kill the mathematician and use his blood in a black magic ritual to transport themselves to 1988, assisted by Fenric ("Silver Nemesis," "The Curse of Fenric").