The pattern we found recently in the Mamari moon calendar:

with glyph number 36 illustrating (presumably) the night Omotohi, where the 1st cycle is finished, and where in glyph number 72 (at the end of the 2nd cycle) we can identify the recycling station, has a parallel in Tahua at the beginning of side a:

We can in Aa1-3--4 imagine poles stretched up across the running figures, at the top of which ragi possibly signifies the sky. These rightward up leaning poles presumably point towards a point of turnover (i.e. here midsummer). We can compare with the pair Aa7-42--43, where the 'heads' lean towards each other as if a mirror was located between them:

Whereas the ragi head leans forward in Aa7-42 it is the 'mother ship' which leans forward in Aa7-43. Maybe leaning forward means leading and leaning backwards means trailing behind like a shadow? All the other ragi glyphs in the neighbourhood are leaning forward:

The ordinal numbers are not random. At Aa7-20 the final number 20 seems to be coordinated with an odd glyph, exactly as 29 and 43. Probably the counting should begin at Aa7-1 and end with Aa7-85:

Twice 42 is 84 and a 'mirrorr' is located halfway through the sequence of glyphs. 85 - 42 = 43 and the top part of the curious Aa7-85 looks like a double variant of the right top part of Aa7-20.

We ought to investigate, in the K calendar, if glyph number 42 is reflected in a halfway station or in a recycling station. Let us begin with locating glyph number 42:

This arrangement has Kb1-8 and Kb1-12 in the same column. Likewise Kb1-9 and Kb1-13 together show how in between them a point of change must be located. A season ought to begin with Kb1-11 and the old season be finished with Kb1-10.

Assuming Kb1-5 to refer to a recycling station, we should search for the halfway station at glyph number 21:

Number 21 must be located in period 6:

The head of the 'shark' probably means a full cycle. In Ka4-13 the oval haú also signifies a full cycle.

Looking in the other direction, forward from Kb1-5, we should search for glyph number 84. It must be located in period 23:

Indeed, the pattern is there. Moreover, we can see a point of resemblance in Tahua, in the 21st glyph in line a7:

4 * 21 = 84. From period 7 up to and including period 23 in the K calendar there are 16 periods, as if alluding to autumn equinox.

125 - 63 = 62 and 125 = 3 * 21 + 2 * 31.

If we transport period 0 to the beginning of the calendar, 62 glyphs will be divided into 7 + 14 + 8  = 29 respectively 30 + 10 - 7 = 33. Possibly the glyphs in period 0 should be divided into two groups:

62 glyphs would then be divided into 3 + 14 + 8 = 25 respectively 30 + 10 - 3 = 37. Neither of the two solutions (29, 33 respectively 25, 37) feels good. Instead we should disregard the black 10 glyphs in periods 32 and 0. 62 - 10 = 52 = 4 * 13 (as in a deck of cards) and 52 = 3 * 8 + 2 * 14. Sun has 3 wives and moon has 2 suitors.

For the sake of balance we ought to disregard some glyphs among the redmarked 63 too, possibly those 13 in period 16. We then will have 6 + 7 + 8 = 21 as a beautiful progression adding up to one more than the final 20, respectively 3 + 15 + 11 = 29 or one more than the final 28. 3 + 15 + 11 can be 18 + 11 or 3 + 26 or 15 + 14.