What is the difference between The Middle Ages, Dark Ages, and Medieval Times?

There isn’t much difference between The Middle Ages, Dark Ages, and Medieval Times.

Although the Dark Ages traditionally refers to the first several centuries of the medieval period.

Commonly, this whole medieval period extended from the end of the ancient Roman empire (somewhere around 400 A.D.) until the beginning of what is seen as “modern times” (about 1500 A.D.).