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Splitting_of_Time Seven extra lunar months were the chosen standard practice that matched with the seven-day week. Middle Eastern calendars likely intercalated 7-months as 209-days of l/s separation time. The 360-day length of year was common in very early prehistory. Extending the single l/s calendar year to the Mayan “katun” 20-year multiple of the l/s calendar continues exactly this fundamental, approximate intercalation of 210-days. Any l/s calendar year of 360-days balances the difference between lunar years and solar years. The outcome is time split to become 105-days each for the lunar-side and solar-side.
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