Identifying the difference between social and political holidays the article considers the holiday as the integral element of cultural memory.The author specifies that political privatization of a holiday is shown in creation of the MELISSA 10% OIL new calendar of the memorable events promoting creation and fixing the collective identity.Identification function of a holiday gets a Reptiles special role in the conditions of migration community.The mythologization of the past leads to emergence of various symbolical dates and the practices of reminiscence of the lost Homeland.