International Volunteer Day for Economic and Social Development
This is a past event
The United Nations (UN) annually observes the International Volunteer Day for Economic and Social Development on December 5. The day, which is also known as International Volunteer Day (IVD), gives volunteers a chance to work together on projects and campaigns promoting their contributions to economic and social development at local, national and international levels.
http://http://www.timeanddate.com/holidays/un/international-volunteer-day