Kurdish calendar throughout Kurdistan follow the same principal structure for the "Kurdish days of the week". The Kurdish name for the first day of the week Sheme (Saturday) is in fact descended from Akkadian word Shabattu (In Sumerian Shabbât, Arabic Sabbath, Pahlavic Shunbat, Persian Shambed; Shamba; Shanbeh, even transferred to Greek as Sabbaton, German Samstag, Italian sabato, Spanish sábado, French Samedi). The Akkadian called the 15th day of the month, the day a full moon appears, Shabbattu. The question still remains why such an adoption was made for Kurdish and Persian days of the week. It has been documented that the Babylonian
Determination of the day of the week since the start of the century, and then add these together along with the number of years since the start of the century, and the day number of the month. Eventually, one ends up with a day-count to which one applies modulo 7 to determine the day of the week of the date. Some methods do all the additions first and then cast out sevens, whereas others cast them out at each step, as in Lewis Carroll's method. Either way is quite viable: the former is easier for calculators and computer programs; the latter for mental calculation (it is quite