The monthly pass (from μηναιον - month) contains variable prayers for each day of the year, according to the dates of each month, for fixed holidays (that is, those that always come on a certain day in a certain month). Therefore, the monthly pass, in accordance with the number of months in the year, consists of twelve books. At the end of each book, special Easter songs of the Mother of God are printed, or the so-called dogmatists, the Virgin Easter which is sung after the verses on the verses,