On November 7, 2002, the state constitution of Nevada was amended to ban same-sex marriage. That amendment has since been struck down as unconstitutional.
It was explicitly banned there in 1991, although it was not legal before then.
It was explicitly banned there in 1992, although it was not legal before then.
It was explicitly banned there in 1994, although it was not legal before then.
It was explicitly banned there in 1999, although it was not legal before then.
It was explicitly banned there in 2003, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.
It was explicitly banned there in 2006, although it was not legal before then.
It was explicitly banned there in 2007, although it was not legal before then.
It was explicitly banned there in 2008, although it was not legal before then.
It was explicitly banned there in 2009, although it was not legal before then.