Hundstage (dog days)
On 23 July the "Hundstage" begin, a mostly hot fair weather period. It is named after the dog star Sirius, which rose and set 3000 years ago in this time with the sun. Already the ancient Greeks and Romans made Sirius responsible for the hot days, the illnesses connected with it, the drowsiness and lethargy. The "Hundstage" should be bad for business and the stock exchange. In most places, work is avoided in this hot time if possible.