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
Sirius a different position, appears as "sigu tolo". All agree, however, that they learned about the star from Griaule." Noah Brosch explained in his book "Sirius Matters" that the cultural transfer of relatively modern astronomical information could have taken place in 1893, when a French expedition arrived in Central West Africa to observe the total eclipse on April 16. In the religion of the Serer people of Senegal, the Gambia and Mauritania, Sirius is called "Yoonir" from the Serer language (and some of the Cangin language speakers, who are all ethnically Serers). The star Sirius is one of the most important