From Radio Bulgaria
Orthodox Church holiday
On August 1, the Orthodox Church celebrates the day of Makvei brothers who remained true to the laws of Moses and had a martyr death for that. Century-old tradition has it that each of the first 12 days of August known as the Makvei Brothers' Days stands for a month of the year counted from September. So the weather of each days shows what the weather of the respective month will be during the year.