December 18 has no owner yet

On December 18, 1865, the Thirteenth Amendment to the US Constitution was ratified, officially abolishing slavery throughout American territory. The amendment was the legal corollary of the Civil War and Lincoln's Emancipation Proclamation of 1863, though the real equality of African Americans would not be guaranteed in law until the Civil Rights Act of 1964.

December 18 was declared by the UN as International Migrants Day, commemorating the adoption of the International Convention on the Protection of the Rights of All Migrant Workers and Members of their Families in 1990. Today there are more than 280 million international migrants in the world, representing 3.5% of the global population.

On December 18, 1997, James Cameron's film Titanic premiered in Los Angeles, going on to become the highest-grossing film in history at that time with $1.843 billion in receipts. The film won 11 Academy Awards, equalling the record of Ben-Hur. In the lead roles, Leonardo DiCaprio and Kate Winslet starred in one of cinema's most iconic romances.