Inserting July and August between June (the month of Father Light, Jupiter) and  September (the 7th month) should not have changed anything in the star calendar, it only may have pushed the Sun months without a proper name (no name) later in the year.

The Corvus constellation is at the opposite side of the sky compared to the Pegasus Square and it has a similar form, but the waves were far down instead of upon the Field.

The water at the Raven was down in the Abyss. Therefore the Raven was always thirsty and could never drink:

... There was no water in the village. The lakes and rivers were dry. Raven and Crow, two young girls who were having their first menstrual courses, were told to go and draw water from the ocean. Finding the journey too long, Raven decided just to urinate into her basket-bucket. She decieved no one and was severly scolded. Crow returned much later but with drinking water. As a punishment, Raven was condemned never to find water in the summer; only in winter would she find something to drink. For that reason the Raven never drinks during the hot months; she speaks with a raucous voice because of her dry throat ...

But Nonoma had to go out to urinate in the night, i.e. he must have had access to water.

Possibly the curious signals of Raparenga (the yellow dance-paddle, the Moon) may have alluded to these waves of water:

... The four of them (corrected for 'the six of them') went out and picked up leaves (on branches) to give signals. They picked them up, went and arrived at Te Hikinga and saw the canoe. Raparenga got up, picked up the leaves, took them in his hands, and waved, waved, waved, waved ...

A square has 4 corners and the 'correction' in Manuscript E was probably there as a Sign in order to alert the reader. It may have meant the canoe of Hotu had reached the Square of Pegasus - because according to the solar calendar the Sun had reached the Square of Raven.

In South America the Square of Raven was well known (and we can also see Leo - perhaps alias the Puma, perhaps alias Jupiter, perhaps alias Nonoma - urinating):

264 (September 21) - 27 (precession from Roman times) = 237 ('August 25). But earlier, before Caesar had invented July and August, it would not have been 'August 25 but day 237 - 62 = 175 ('June 24). Or considering the fact that in earlier times June had only 29 days - 'June 23:

In this maze of dates and images it seems likely that it was Canopus who was responsible for sucking up (omo) all the waters, until having reached Omo-tohi (the end of sucking, the Full Moon):

... The Pythagoreans make Phaeton fall into Eridanus, burning part of its water, and glowing still at the time when the Argonauts passed by. Ovid stated that since the fall the Nile hides its sources. Rigveda 9.73.3 says that the Great Varuna has hidden the ocean.

The Mahabharata tells in its own style why the 'heavenly Ganga' had to be brought down. At the end of the Golden Age (Krita Yuga) a class of Asura who had fought against the 'gods' hid themselves in the ocean where the gods could not reach them, and planned to overthrow the government. So the gods implored Agastya (Canopus, alpha Carinae = Eridu) for help. The great Rishi did as he was bidden, drank up the water of the ocean, and thus laid bare the enemies, who were then slain by the gods. But now, there was no ocean anymore! Implored by the gods to fill the sea again, the Holy One replied: 'That water in sooth hath been digested by me. Some other expedient, therefore, must be thought of by you, if ye desire to make endeavour to fill the ocean ...

Sirius would follow only a few days later and he would make the waters return.

... Sirius was thought of as a very special star in ancient Egypt, not only because it seemed to stand still over the eons, and not only because it was the brightest star in the sky, but most of all because it apparently caused the water of the Nile to rise. Its effects on water were far reaching:

... Pliny wants to assure us that 'the whole sea is conscious of the rise of that star, as is most clearly seen in the Dardanelles, for sea-weed and fishes float on the surface, and everything is turned up from the bottom'. He also remarks that at the rising of the Dog-Star the wine in the cellars begins to stir up and that the still waters move ...

On Easter Island Sirius was named Te Pou (the pillar) and in the kuhane sequence of stations the preceding name was Te Pei:

Barthel has argued for another translation, viz. 'a delicious fish far down':

 ... Te Pei [one of the kuhane stations] should probably read Te Pe'i (unfortunately, Ms. E does not indicate glottal stops). The pe'i is a large, tasty fish (Caranx cheilio, Fuentes 1960:290), caught in the deep waters of the fishing grounds (hakanononga). In one recitation, the pe'i is likened to the 'great fish' (ika nui) and compared to the very popular tunafish (kahi) (Barthel 1960:848). This favorite food from the ocean is depicted in numerous petroglyphs ...

... From Wikipedia the following picture of Caranx lugubris (black jack) - I could not find the referred to Caranx cheilio - is illustrating an important point:

I suggest the dream soul station Te Pei corresponded to Canopus - far down out of sight where water accumulated (as in Hurin) - whereas Te Pou was at the opposite pole (as in the Hanan region in the Andes where the early rays from the Sun illuminated the mountain tops).

The emperor has here no visible arrow and possibly it meant the shaft of his arrow was invisible - exept its point which was Sirius. The Dog star has drawn up water into a pool surrounding him. The Bow of the emperor may have been created from the Sagittarius stars at the nakshatra side of the sky compared to Canopus. The Full Moon is above his bow.

Although both Sirius and Canopus are below the equator (16º 39' S respectively 52° 40′ S) their declinations indicate a vast vertical distance between them. If the emperor of China corresponded to Canopus (or Saturn) he would have had to look up when aiming at Sirius (Jupiter).

... Saturn does give the measures: this is the essential point. How are we to reconcile it with Saturn the First King, the ruler of the Golden Age who is now asleep at the outer confines of the world? The conflict is only apparent, as will be seen. 

For now it is essential to recognize that, whether one has to do with the Mesopotamian Saturn, Enki / Ea, or with Ptah of Egypt, he is the 'Lord of Measures' - spell it 'me' in Sumerian, 'parshu' in Akkadian, 'maat' in Egyptian. And the same goes for His Majesty, the Yellow Emperor of China - yellow, because the element earth belongs to Saturn - 'Huang-ti established everywhere the order for the sun, the moon and the stars'. The melody remains the same. It might help to understand the general idea, but particularly the lucubrations of Proclus, to have a look at the figure drawn by Kepler, which represents the moving triangle fabricated by 'Great Conjunctions', that is those of Saturn and Jupiter.

 One of these points needs roughly 2.400 years to move through the whole zodiac ...