When did the twelve gods of Olympus rule?

The Twelve Olympian gods, central to ancient Greek mythology, were believed to have ruled during the mythological period that coincides with the rise of Greek civilization, particularly from around the 8th century BCE onwards. Their prominence was most notable during the height of ancient Greek culture, particularly in the Archaic and Classical periods, which lasted until around the 4th century BCE. The myths and stories surrounding these gods were widely told and celebrated in literature, art, and religious practices throughout this time.