Today the flag of the Vatican was raised at the United Nations for the first time, yes, the first time with the flags of the 193 United Nations member states.
On September 10 the General Assembly overwhelmingly approved a Palestinian-sponsored resolution allowing the flags of non-voting observer states to fly alongside those of member states. The Holy See and Palestine are the only two observer states.
The U.S. flag flew for the first time today.
The Palestinian flag will fly for the first time on September 30.