We can now perceive that the intention of the creator of the G text presumably was to connect the glyphs with the heliacal dates in Roman times.

In Roman times the root of the mast of Argo Navis (χ) was at the northern summer solstice.

And the ship had abruptly made landfall, causing its mast to break and fall forward:

... During his descent the ancestor still possessed the quality of a water spirit, and his body, though preserving its human appearance, owing to its being that of a regenerated man, was equipped with four flexible limbs like serpents after the pattern of the arms of the Great Nummo. The ground was rapidly approaching. The ancestor was still standing, his arms in front of him and the hammer and anvil hanging across his limbs. The shock of his final impact on the earth when he came to the end of the rainbow, scattered in a cloud of dust the animals, vegetables and men disposed on the steps. When calm was restored, the smith was still on the roof, standing erect facing towards the north, his tools still in the same position. But in the shock of landing the hammer and the anvil had broken his arms and legs at the level of elbows and knees, which he did not have before. He thus acquired the joints proper to the new human form, which was to spread over the earth and to devote itself to toil ...