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
MV Sirius Star ever to be hijacked. It is estimated that for the pirates to reach "Sirius Star", they must have voyaged south for three to four days. At the time of the attack, the ship was carrying a full load of of crude oil more than one-quarter of Saudi Arabia's daily oil production output, and worth at least and was bound for the United States via the Cape of Good Hope. According to officials from Puntland, the pirates anchored "Sirius Star" at the Somali port of Harardhere, contrary to early reports from the United States Navy that she was anchored near Eyl.