Dog days sometimes used for the lethargic summer markets. Various computations of the dog days have placed their start anywhere from 3 July to 15 August and lasting for anywhere from 30 to 61 days. They may begin or end with the cosmical rising or heliacal rising of either Sirius in Canis Major or Procyon (the "Little Dog Star") in Canis Minor and vary by latitude, not even being visible throughout much of the Southern Hemisphere. Sirius observes a period of almost exactly 365¼ days between risings, keeping it largely consistent with the Julian but not the Gregorian calendar; nonetheless, its dates
Sirius Al-Jawza' (Sirius), which a group of Arabs used to worship." The alternate name "Aschere", used by Johann Bayer, is derived from this. In theosophy, it is believed the "Seven Stars of the Pleiades" transmit the spiritual energy of the Seven Rays from the "Galactic Logos" to the "Seven Stars of the Great Bear", then to Sirius. From there is it sent via the Sun to the god of Earth (Sanat Kumara), and finally through the seven Masters of the Seven Rays to the human race. The Dogon people are an ethnic group in Mali, West Africa, reported by some researchers