I want to know the answer to the following question:
On what date did Charlemagne assume the imperial title?
All the background I'm provided with is that "The coronation of Charlemagne as emperor on Christmas Day 800 is regarded as a turning point in medieval history, marking a return of the Western Roman Empire, since the new emperor ruled over much of the area previously controlled by the western emperors.". Is that enough to answer the question?
Answer: yes