1. “Moon Fact Sheet,” NASA. http://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html.
2. R. A. Parker, “Ancient Egyptian Astronomy,” Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 276, No. 1257, 2 May 1974, p. 51.
u Early Egyptians assumed a 360-day year, until they realized that the Nile was flooding later and later each year according to that calendar. Because Egypt’s earliest settlers probably would not have adopted a 360-day year while in Egypt, they presumably brought that outdated understanding with them. [See J. Norman Lockyer, The Dawn of Astronomy (Cambridge, Massachusetts: The M.I.T. Press, 1964), pp. 243–248.]
3. Frank Parise, The Book of Calendars (Gorgias Press LLC).
4. Ibid., p. 44.
5. Wayne Horowitz, “The 360 and 364 Day Year in Ancient Mesopotamia,” Journal of the Ancient Near Eastern Society, Vol. 24, 1996, p. 36.
6. T. Freeth et al., “Decoding the Ancient Greek Astronomical Calculator Known as the Antikythera Mechanism,” Nature, Vol. 444, 30 November 2006, pp. 587-591.
7. Dileep Kumar Kanjilal, “The Origin of the Concept of the Intercalary Month (Malamāsa) in India,” Annals of the Bhandarkar Oriental Research Institute, Vol. 77, No. 1/4 (1996) p. 259.
8. For the purposes of this study, these percentages could be varied slightly and the two assumptions could be replaced by one assumption; namely, that 0.036% (0.03 × 1.22% = 0.036%) of the preflood Earth’s mass hit the Moon.
9. The cross section of the Moon’s sphere of influence (SOI), whose radius is 66,100 km, is 4p(66,100)2. This is 0.7% of 4p(395,844)2—the surface area of a sphere with a radius from the Earth to the Moon.
10. “Cataclysm’s End: A Popular Theory about the Early Solar System Comes under Fire,” Nature, Vol. 553, 25 January 2018, pp. 393–395.
11. Ibid. p. 393.