Cultus Apollinis

Apollo is the ancient Greek god of healing, oracles and inspiration. He had no indigenous Roman counterpart, and always remained a foreign god. He was worshipped in Rome primarily as Apollo Medicus, Apollo the healer. Apollo was actually quite a minor god in Italy and did not become popular until the advent of Augustus who built a magnificent temple on the Palatine to him. His cult was supervised by the decemviri sacris faciundis in ritu graecu.

Dedication days, dies natalis, for his Temples:

28 B.C. Apollo Palatinus: a.d. septimum Idus Octobres, October 9

431 B.C Apollo in pratis Flaminiis:  III ID. Quinctilis, July 13

Festivals:

 Ludi Apollinares: prid non -III ID Quintiliis, July 6-13
              

In 430 BCE, the Temple of Apollo Medicus was dedicated to Apollo on account of a plague. Located near the Theater of Marcellus, three fluted white marble Corinthian columns of this temple were re-erected in modern times. Fragments of this temple are found in the Montemartini Museum.

During the Second Punic War in 212 BCE, the Ludi Apollinares were instituted in his honor.