The appearance of 192 in connection with a calendar based on 360 days makes it possible to guess why:
The 'reflection' of 192 in 360 is 168 (i.e. 192 + 168 = 260). Both 192 and 168 are 'square' numbers: 4 * 48 = 192 and 4 * 42 = 168. In other words, a year with 360 days can be divided into two unequal 'years' ('quadrangular earths'). The 'squaring of the circle' can be accomplished by using two 'squares'. Likewise, we can take a 400-day long year and 'square' it with the described method:
We recognize both 260 and 140 from the rongorongo texts, and there are also some signs of a 'year' with 400 days. 4 * 65 = 260 and 4 * 35 = 140. With some new respect we can now consider those places in the texts where we have met 65 and 35, e.g.:
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