2 papers
physics.hist-ph2018
Algol as Horus in the Cairo Calendar: the possible means and the motives of the observations
Sebastian Porceddu, Lauri Jetsu, Tapio Markkanen +4
An ancient Egyptian Calendar of Lucky and Unlucky Days, the Cairo Calendar (CC), assigns luck with the period of 2.850 days. Previous astronomical, astrophysical and statistical an…
astro-ph.SR2016
Shifting Milestones of Natural Sciences: The Ancient Egyptian Discovery of Algol's Period Confirmed
Lauri Jetsu, Sebastian Porceddu
The Ancient Egyptians wrote Calendars of Lucky and Unlucky Days that assigned astronomically influenced prognoses for each day of the year. The best preserved of these calendars is…