Calendars with Olympiad display and eclipse prediction on the Antikythera Mechanism

@article{Freeth2008CalendarsWO,
  title={Calendars with Olympiad display and eclipse prediction on the Antikythera Mechanism},
  author={Tony Freeth and Alexander Jones and J. Michael Steele and Yanis Bitsakis},
  journal={Nature},
  year={2008},
  volume={454},
  pages={614-617}
}
Previous research on the Antikythera Mechanism established a highly complex ancient Greek geared mechanism with front and back output dials. The upper back dial is a 19-year calendar, based on the Metonic cycle, arranged as a five-turn spiral. The lower back dial is a Saros eclipse-prediction dial, arranged as a four-turn spiral of 223 lunar months, with glyphs indicating eclipse predictions. Here we add surprising findings concerning these back dials. Though no month names on the Metonic… 

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