On the basis of the analysis of the components of the traditional ritual cal-endar of the inhabitants of Slobozhanshtshyna - customs, songs, dances, national games etc., the historiography of the special references the evolution of the ritual culture of the Ukrainian calendar holidays of Slobozhanshtshyna is investigated in the dissertation. The tendencies and laws of formation of calendar Ukrainian holidays of Slobozhanshtshyna are considered in the close connection with the historical development of the basic attributive elements of the celebratory ritual tradition of Slobozhanshtshyna. The cultural - historical aspects of transformation of traditional calendar holidays are opened and the role of the folklore-ethnographic collectives of Slobozhanshtshyna in preservation both popularization of the calendar holidays and rituals is found out in the dissertation. The development of the forms of the spiritual culture integrally is connected with the evolution of the system of animistic and mythological ideas of the east slavs, their agricultural cycle, with specificity of spheres of the public ability to live: labour, household, political, sacral etc. The calendar ritual sphere of the spiritual culture is a specific means of the reproduction and fastening of the traditional values, original solemn form of the dialogue. The powerful mechanisms of the compilation both the accumulations of the centuries-old moral and aesthetic experience are customs, holidays and rituals. Acquiring the elements of the orthodox Christian rituals, the peasants of Slobozhanshtshyna adapted them for the real needs of the their economy and daily household use. The bright certificate of it is the existence of two ritual systems, incorporated in the annual calendar cycle, - church and national. The introduction in the Ukraine of the Christianity has not destroyed traditional celebratory ritual of Slobozhanshtshyna, as the conceptual circuit of the Chris-tian holiday - association sacral and leisure aspects - was similar. The connectionof the Christian and traditional ost Slavic of the calendar ritual rhythm, replacement of objects of worship was held. The tendencies of the development of the Ukrainian calendar holiday in the modern society are caused by the transformation of the socioeconomic relations during of the second half of the ХХth - beginning of the ХХIth century, having the effect on the ethnographic forms and forms of the economic life, geopolitical changes, secularization processes, urbanization processes of the population, the class changes and etc. The evolution of the Ukrainian calendar holidays and rituals of Slobozhanshtshyna was determined by influences of the Christianity and paganism. From the Christianity in the national calendar the culture has received the arrangement of the sacred for the days of the cycle of the year, from the paganism - the distribution between the sacred the cares of the weather, health of the people, agricultural and home works. The acceptance of the Christianity stimulated the study of the church calendar and the reverence of the sacred, to each of them was devoted the certain day (or some days in the year) of which. The Christianity has helped to transform a set of knowledge of the farmer in convenient system of the chronology. The Saint holidays served as the outline, in which practical experience of the Peasants of Slobozhanshtshyna easily was located and which naturally has incorporated traditional rituals and holidays.