You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Marshall_Islands

Context:
The Marshall Islands was admitted to the United Nations based on the Security Council's recommendation on August 9, 1991, in Resolution 704 and the General Assembly's approval on September 17, 1991, in Resolution 46/3. In international politics within the United Nations, the Marshall Islands has often voted consistently with the United States with respect to General Assembly resolutions.

Question:
When did the UN General Assembly approve the Marshall Islands joining the UN?

September 17, 1991