1666

August

 * Unknown Date - The Doctor, Adric, Nyssa, and Tegan arrive in London on the trail of a Terileptil invasion. (DW:The Visitation)

September

 * 2 - The Doctor accidentally starts the Great Fire of London. (DW: The Visitation, known history)
 * 2 - 5 - The Great Fire of London (DW: The Visitation, known history)