Alternatively, the epithet may identify a particular and localized aspect of the god, such as a reference to the mythological place of birth or numinous presence at a specific sanctuary: sacrifice might be offered on one and the same occasion to Pythian Apollo ("Apollo Pythios") and Delphic Apollo ("Apollo Delphinios"). A localizing epithet refers simply to a particular center of veneration and the cultic tradition there, as the god manifested at a particular festival, for example: Zeus Olympios, Zeus as present at Olympia, or Apollo Karneios, Apollo at the Spartan Carneian festival.