The geography of myth is a map of the stars in the night sky. To perceive myth it is necessary to know the basic features of this sky 'geography'. When Maui used his hook to pull up 'new land' it did not literally mean he raised New Zealand from the deeps, instead it could have meant he made the 'land' region in the sky emerge from the 'sea' in the sky. We should not be fooled and we should notice the comparison:

... This act of Maui's, that gave our people the land on which we live, was an event next in greatness to the separation of the Sky and Earth ...

The separation of 'Sky' from 'Earth' occurs earlier than the return of 'Land' from 'Sea'.

Presumably Metoro did not primarily relate the glyphs he saw to the corresponding season on Easter Island, nor to the opposite season north of the equator. We can assume he instead compared the glyph text with what he knew could be observed in the night sky (simultaneously on both sides of the equator).

In other words, we should - at least as a working hypothesis - try to coordinate Metoro's words with the nakshatra stars which I provisionally have located 181 days later than the heliacal positions of the stars according to my understanding of the G text.

In this mythic landscape the 'old world' goes under in a 'flood' and then a fresh new world emerges, like when sea recedes to reveal the bright sands of ebb:

... 'The earth rises up from the sea again, and is green and beautiful and things grow without sowing.

The formula is how growth (food) returns when at 'dawn' earth is rising again from the waves of 'night' (winter). Once upon a time this coincided with early spring north of the equator, but precession has pushed the relevant star features forward in the year.

Once it was the heliacal rising of Taurus (Aldebaran, Ana-muri) which 'caused' the sky roof to be raised high in order to let in light - while south of the equator is was the Scorpion (Antares, Ana-mua) who performed this great feat of separation (koti) of sky from earth. In rongorongo times they could see the hook of Maui (the tail of Scorpion) in the night sky when Sun was in Taurus.

Of course Metoro also knew which important stars rose heliacally at the crucial times:

Pleione 7 (21)	8	9
June 6 (157)	7	8
Ca4-1 (77)	Ca4-2	Ca4-3
kua tupu te rakau	kua tupu - te kihikihi	te hau tea
λ Eridani (76.7)	Rigel (78.1)	η Scorpii (259.9)

Tupu 1. Shoot, sprout, bud; to sprout, to bud. 2. Pregnant: vî'e tupu (o te poki); to be conceived (of fetus in its mother's womb): he-tupu te poki i roto i te kopú o toona matu'a. Vanaga. To grow, to sprout, to germinate, to come forth, to conceive, pregnant, germ; mea tupu, plant; tupu ke avai, of rapid growth; tupu horahorau, precocious; hakatupu, to produce, to stimulate growth, to excite. P Pau.: fakatupu, to raise up, to create. Mgv.: tupu, to grow, to conceive, to be pregnant. Mq.: tupu, to grow, to sprout, to conceive. Ta.: tupu, to grow, to sprout. Churchill. Mgv.: Tupu, the best or worst, used of men or of bad qualities. Sa.: tupu, king. Ma.: tupu, social position, dignity. Churchill.

His words at the beginning of line Ca4 implies a time of growth, and viewed from Easter Island the sky where Rigel was rising in the east has λ Eridani (76.7) only a short step ahead of Rigel:

This part of the sky could not be seen early in June because Sun was there. But half a year later (260 days after the March equinox) it would not be difficult. At that time of the year there was a 'twinkling procession of bright stars' leading the eye:

... The rising Pleiades led a twinkling procession of bright stars into the sky: Aldebaran first, then the stars of Orion (called Tautoru by the Rapa Nui). Sirius (Reitanga in Rapanui), at a declination of 16º 42', is the brightest star in the sky on this and every other morning, and travels a path that takes it over the centre of Polynesian culture, Tahiti.