联合国日
The greatest contribution of Ven. Thich Nhat Tu to the public relation of Vietnam Buddhist Sangha is successfully calling for the celebration of UN Day of Vesak (UNDV) (United Nations Day of Vesak 2008) 2008 and 2014 in Vietnam. As the deputy secretary of International Organising Committee (IOC) of United Nations Day of Vesak in Bangkok, he drafted the charter of UNDV, and introduced Le Manh That to IOC of UNDV. As a result, in late 2007, Le Manh That was appointed by IOC as chairman and Ven. Thich Nhat Tu as secretary general of UNDV in 2008, hosted by the Government of Vietnam at National Conference Center, Hanoi, Vietnam.