Evidence of Periodicity in Ancient Egyptian Calendars of Lucky and Unlucky Days

@article{Porceddu2008EvidenceOP,
  title={Evidence of Periodicity in Ancient Egyptian Calendars of Lucky and Unlucky Days},
  author={S. Porceddu and L. Jetsu and T. Markkanen and J. Toivari-Viitala},
  journal={Cambridge Archaeological Journal},
  year={2008},
  volume={18},
  pages={327 - 339}
}
This article presents an experiment in time series analysis, specifically the Rayleigh Test, applied to the ancient Egyptian calendars of lucky and unlucky days recorded in papyri P. Cairo 86637, P. BM 10474 and P. Sallier IV. The Rayleigh Test is used to determine whether the lucky and unlucky days are distributed randomly within the year, or whether they exhibit periodicity. The results of the analysis show beyond doubt that some of the lucky days were distributed according to a lunar… Expand
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