Sirius its constellation, Canis Major (Greater Dog). The heliacal rising of Sirius marked the flooding of the Nile in Ancient Egypt and the "dog days" of summer for the ancient Greeks, while to the Polynesians in the Southern Hemisphere the star marked winter and was an important reference for their navigation around the Pacific Ocean. The brightest star in the night sky, Sirius is recorded in the earliest astronomical records. Its displacement from the ecliptic causes this heliacal rising to be remarkably regular compared to other stars, with a period of almost exactly 365.25 days holding it constant relative to the
Ancient of Days icons, the Ancient of Days is sometimes identified with God the Father or occasionally the Holy Spirit; but most properly, in accordance with Orthodox theology he is identified with God the Son, or Jesus. Most of the eastern church fathers who comment on the passage in Daniel (7:9-10, 13-14) interpreted the elderly figure as a prophetic revelation of the son before his physical incarnation. As such, Eastern Christian art will sometimes portray Jesus Christ as an old man, the Ancient of Days, to show symbolically that he existed from all eternity, and sometimes as a young man, or wise baby,