National Farmers' Day is a public holiday in the Republic of Ghana celebrated on the first Friday in December. It was instituted by the government in 1985 in response to a severe drought that had imposed serious burden on the country's farmers. The holiday honors Ghana's farmers and fishers and their contribution to the nation's socioeconomic development.
International Sweater Vestival is a parody of other celebrations and it encourages people wear a sweater vest to work. It's funny, but it's real and it's annually celebrated on the second Friday after Thanksgiving.
International Day for the Abolition of Slavery is an annual United Nations observance celebrated on December 2. It was officially established by the UN General Assembly in 1986 to commemorate the adoption of the Convention for the Suppression of the Traffic in Persons and of the Exploitation of the Prostitution of Others in 1949.