The theory of "globalization" has undoubtedly been one of the controversial themes of the social sciences in the 1990s.Although the effects of globalization are virtually undeniable, questions about the origins, diffusion and scope of the process are matters of intense debate among social scientists. Some theorists, such as Giddens, have looked for signs of globalisation even earlier than the Industrial Revolution and have argued that it was merely intensified during the twentieth century. Globalisation is also portrayed as a dialectical process in the sense that local events are influenced by other happenings taking place many miles away and versa. The globalization of time began, according to this point of view, with the diffusion of the great Christian festivals.The celebrations at the end of 1999, as the pivot of the Millennium, offer a valuable opportunity to test this particular conceptualization of "globalisation". In order to assess the concepts value, the impact of the world-wide Millennium ceremonies will be examined in Iran - a country that has undergone a highly distinctive process of development since the 1970s. The research conducted and reported in this paper reflects critically on the idea that time has become global. Using participant observation in private and public places, analyses of mass media contents and a survey of opinions among school students, the aim is to discover how far people in Iranian society are aware of, knowledgeable about, and involved in millennial celebrations, which, in theory, have no relevance to them.