There is a 'fist' held high at the proper place, which agrees with the idea of a new beginning (10 days after the empty hand at Polaris).

... The practice of turning down the fingers, contrary to our practice, deserves notice, as perhaps explaining why sometimes savages are reported to be unable to count above four. The European holds up one finger, which he counts, the native counts those that are down and says 'four'. Two fingers held up, the native counting those that are down, calls 'three'; and so on until the white man, holding up five fingers, gives the native none turned down to count. The native is nunplussed, and the enquirer reports that savages can not count above four ...

The precessional distance down from the time of rongorongo to that of the First Father can be calculated as around (1842 + 3112) / 26000 * 365.25 = 70 right ascension days, or as 6 days more than 64 = 10 days less than 80. It was evidently Polaris who rose with the Sun when Hun-Nal-Ye became the sky, and it would have been in day 392 (January 26) - 10 = 382 (January 16) when the companion star of Polaris (*26.6), viz. the Belly of the Fish (Baten Kaitos, ζ Ceti, *26.6) would have returned to visibility after the close encounter with the Sun in December 31. Polaris never sank below the horizon and it was therefore outside the cycles of heliacal risings and settings.