Academic Calendars. Because dates are subject to change due to interdependence, below is the most up-to-the-minute edition maintained by University Registrar personnel. Critical items such as semesters' start and end, registration periods and school holidays are corrected dynamically whenever changes occur.
For other uses, see Omphalos (disambiguation). An omphalos (á½Î¼ÏÎ±Î»ÏÏ) is a religious stone artifact, or baetylus. In Greek, the word omphalos means navel. In Greek lore, Zeus sent two eagles across the world to meet at its center, the navel of the world. Omphalos stones marking the centre were erected in several places about the Mediterranean Sea; the most famous of those was at Delphi. Omphalos is also the name of the stone given to Cronus. In the ancient world of the Mediterranean, it was a powerful religious symbol. Omphalos Syndrome refers to the belief that a place of geopolitical power and currency is the most important place in the world.
The Aztec Sun Stone (or Calendar Stone) depicts the five consecutive worlds of the sun from Aztec mythology. The stone is not, therefore, in any sense a functioning calendar, but rather it is an elaborately carved solar disk, which for the Aztecs and other Mesoamerican cultures represented rulership.