International Volunteer Day for Economic and Social Development Dec 5 (A/RES/40/212)
http://www.un.org/en/events/volunteerday/
http://www.un.org/en/ga/search/view_doc.asp?symbol=A/RES/40/212
held each year on 5 December. It is viewed as a unique chance for volunteers and organizations to celebrate their efforts, to share their values, and to promote their work among their communities, non-governmental organizations (NGOs), United Nations agencies, government authorities and the private sector.