International Volunteer Day is marked annually on 5 December. Pictured, are UNAMID's United Nations Volunteers (UNV) providing teaching and learning materials to a Basic School in Mellit locality, North Darfur. In his message for the day, the UN Secretary-General, António Guterres, highlighted the role of volunteerism in promoting the Sustainable Development Goals. Photo by Mohamad Almahady. UNAMID.