We had a quick look at this sequence earlier (at manu kake). It was then argued that Ha12-3 was referring to the waning moon and:

... at left are powerful sky eating arms, at right there are 8 signs of maro connected to Y on vaha mea. 12 * 3 = 36, and 630 is the reversal of 36 (times 10). Vaha mea, we know, indicates the season when the sky roof is opening up after new year. Together with Y and maro it means that season is over ...

There is no obvious reason to change this opinion. Indeed, the end of glyph line Ha11 supports the interpretation:

... the double [fish] glyphs presumably refer to the moon with her two faces (waxing and waning), and 4 + 4 = 8 maro feathers is a sign of her leaving. The central fish (Ha12-3) probably is waning moon, because 7 glyphs earlier another such fish is without a 'cutmark' across:

We can conclude from the arguments above that the two fish manu kake in H probably are standing at the beginning of the 'quarter' when sun arrives ...

The two tagata glyphs (Ha11-52--53) should refer to the end of the 'moon' ('night') part of the year (beyond midsummer). In Ha11-57 the head seems to be lost, and maybe it is going away in a canoe (Ha11-58) where a single maitaki 'stone' could represent the old sun. The two 'eyes' in Ha11-56 presumably indicates the Janus situation of winter solstice - one 'eye' is in front and one in the past.