S. N. Singh 
Encyclopaedia of International Decades, Years and Days 

This publication entitled Encyclopaedia of International Decades, Years and Days deals with complete detail of international decades, Years, weeks and days being celebrated worldwide. Since the early days of the United Nations system, it has established a set of Days, Weeks, Years and Decades to help focus the world on the issues in which the UN has an interest and commitment. It calls on Member States and other organizations to mark these days in ways that reflect their priorities. Sometimes the promotion of a specific day is led by a specific UN agency or programme, for example the World Health Organization [WHO) leads World Health Day and World No-Tobacco Day, UN Educational Scientific and Cultural Organization (UNESCO) leads World Water Day and International Literacy Day, UN Environment Programmed (UNEP) leads World Environment Day etc. Some UN agencies also have their own international days (e.g. WHOs World TB Day and UNESCOs World Philosophy Day), established and promoted by the agency but not designated by the UN General .Assembly for the full UN system. While equivalent in purpose, the following list does not include agency-specified days. Since the early days of the United Nations system, the UN has established a set of Days and Weeks to help focus the world on the issues in which the UN has an interest and commitment. Since 1959 the UN has designated International years in order to draw attention to major issues and to encourage international action to address concerns that have global importance and ramifications.