During those days, the Atlanteans saw that the stars and the sun always rose in the west (nowadays this is in the east), so that the stars needed one whole night to cross the sky. In addition, they noticed that different star signs were seen in different seasons. It never happened that suddenly a new star sign would show up in the West. Everything evidenced an order and predictable regularity. It comforted them in the loss of all that had died in the catastrophe.
As time went on, they discovered other stellar phenomena. Some stars rose or sank just before sunrise and the times and places varied with the seasons. It was actually a rediscovery that their ancestors had already found out. However, with their dedication and skill, they were eventually able to explore in depth alot of celestial codes.
Furthermore, they researched the constellation of Orion and the star Sirius with the utmost curiosity. At that time, Orion ruled over the northern and southern starry skies of the Earth, and it was the clearest visible constellation. Sirius was in line with Orion and the Zodiac, and it is a big, brilliant star. This is why they paid so much attention to it.