And we can then look for (in the G text) where Nonoma was out in the night urinating.

... The canoes of Ava Rei Pua and of Hotu were seen near the (off-shore) islets. On the fifteenth day of the month of October (tangaroa uri) the canoe of Hotu and the canoe of Ava Rei Pua landed. On the fifteenth day of the month of October (tangaroa uri), Nonoma left the house during the night to urinate outside. At this point Ira called out to Nonoma, 'Look at the canoe!' Nonoma ran, he quickly went to Te Hikinga Heru (a ravine in the side of the crater Rano Kau) and looked around. There he saw the double canoe way out near the (offshore) islets, and the two (hulls of the canoe) were lashed together. He ran and returned to the front of the house. He arrived and called into the house: 'Hey you! This canoe has arrived during the night without our noticing it!' Ira asked Nonoma, 'Where is the canoe, which you say is lying out there (in the water)?' Nonoma's voice came back: 'It is out there (in the water) close to the (offshore) islets! There it lies, and the two (hulls) are lashed together.' 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 ... [E:75]

I have assumed Nonoma corresponded to Jupiter, for instance because he was preceded by Ringiringi:

Rigi. A very detailed myth comes from the island of Nauru. In the beginning there was nothing but the sea, and above soared the Old-Spider. One day the Old-Spider found a giant clam, took it up, and tried to find if this object had any opening, but could find none. She tapped on it, and as it sounded hollow, she decided it was empty. By repeating a charm, she opened the two shells and slipped inside. She could see nothing, because the sun and the moon did not then exist; and then, she could not stand up because there was not enough room in the shellfish. Constantly hunting about she at last found a snail. To endow it with power she placed it under her arm, lay down and slept for three days. Then she let it free, and still hunting about she found another snail bigger than the first one, and treated it in the same way. Then she said to the first snail: 'Can you open this room a little, so that we can sit down?' The snail said it could, and opened the shell a little. Old-Spider then took the snail, placed it in the west of the shell, and made it into the moon. Then there was a little light, which allowed Old-Spider to see a big worm. At her request he opened the shell a little wider, and from the body of the worm flowed a salted sweat which collected in the lower half-shell and became the sea. Then he raised the upper half-shell very high, and it became the sky. Rigi, the worm, exhausted by this great effort, then died. Old-Spider then made the sun from the second snail, and placed it beside the lower half-shell, which became the earth. Larousse. Ta.: iki, iini, to pour, to spill. Sa.: ligi, liligi, id. Ma.: ringi, riringi, id. Ta.: ninii, id. Pau.: riringi, id. Churchill.

Rigi was the formidable worm who first raised the upper half-shell a little wider - at the same time releasing salt from his sweat which became the sea - and who then perished after having raised the upper shell very high in order to become the sky. Unicorn should mean 1 corner:

Hiro. 1. A deity invoked when praying for rain (meaning uncertain). 2. To twine tree fibres (hauhau, mahute) into strings or ropes. Ohirohiro, waterspout (more exactly pú ohirohiro), a column of water which rises spinning on itself. Vanaga. To spin, to twist. P Mgv.: hiro, iro, to make a cord or line in the native manner by twisting on the thigh. Mq.: fió, hió, to spin, to twist, to twine. Ta.: hiro, to twist. This differs essentially from the in-and-out movement involved in hiri 2, for here the movement is that of rolling on the axis of length, the result is that of spinning. Starting with the coir fiber, the first operation is to roll (hiro) by the palm of the hand upon the thigh, which lies coveniently exposed in the crosslegged sedentary posture, two or three threads into a cord; next to plait (hiri) three or other odd number of such cords into sennit. Hirohiro, to mix, to blend, to dissolve, to infuse, to inject, to season, to streak with several colors; hirohiro ei paatai, to salt. Hirohiroa, to mingle; hirohiroa ei vai, diluted with water. Churchill. Ta.: Hiro, to exaggerate. Ha.: hilohilo, to lengthen a speech by mentioning little circumstances, to make nice oratorial language. Churchill. Whiro 'Steals-off-and-hides'; also [in addition to the name of Mercury] the universal name for the 'dark of the Moon' or the first day of the lunar month; also the deity of sneak thieves and rascals. Makemson.

... Snorri Sterluson explains why 'Frodi's grist' is a kenning for gold. Frodi ruled during a peaceful and productive period, contemporaneous with Augustus's Pax Romana and the birth of Christ; hence the kenning. There were neither thieves nor robbers during this period, 'so that a gold ring lay long on Jalang's heath'. Snorri continues his account with the legend of the mill beyond what is told in the song: The girls' grinding produced an army hostile to Frodi. On the very day of the girls' predictions, the sea-king, Musing (Son of the Mouse), landed on the Danish shore, killed Frodi, and took away Grotti and the women on his ship. The girls were bidden to grind out salt on the mill. At midnight they asked for further instructions. 'Keep grinding', he told them. Then they ground with such vigor that the ship sank. Water poured into the eye of the mill, creating the maelstroem of the sea. Therefore the sea was salt. Incidentally, the mill was given a kenning, Serpent's Couch ...

If we simply should continue the method for finding a place in timespace by leaning on the epoch of Bharani this would be the result; Nonoma was out urinating in the night of September 29:

I have not attempted to note the culmination nights for all the stars I have listed. But from my list we can deduce what star culminated in September 29. It is only necessary to reduce the listed heliacal dates with 1: