The Olympic Games were begun in ancient Greece in honor of the Sky God, Zeus. It was that event, which happened every four years, became the basis of the Greek calendar on ancient Earth. Although the worship of Zeus continued intermittently on ancient Earth after the fall of the Roman Empire, there is evidence that the Olympic Games were celebrated several millennia later and up until just before the Olympian exodus from Earth. Scholars are fairly certain the participants in the later Olympic Games were not followers of Zeus, but participated for the athletic competitions.
The tradition of the Olympic Games continues on Arcadia although it now occurs every two years rather than every four. Athletes from all the Olympian sects, except Artemis and Poseidon, convene in New Athens midsummer to celebrate this ancient tradition.