The term 'Days Knights Flourished' refers to a period of time in the Middle Ages when knights were at their most powerful. The word 'YORE' is used to describe this time, which is typically defined as being from the 5th to the 15th centuries. During this period, knights were highly respected and held a prominent place in society. They were also responsible for protecting the people and lands of their lords. This period of time was known for its chivalry, honor, and bravery, and it was during this time that the code of chivalry was established.