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:
United_Methodist_Church

Context:
Though John Wesley originally wanted the Methodists to stay within the Church of England, the American Revolution decisively separated the Methodists in the American colonies from the life and sacraments of the Anglican Church. In 1784, after unsuccessful attempts to have the Church of England send a bishop to start a new church in the colonies, Wesley decisively appointed fellow priest Thomas Coke as superintendent (bishop) to organize a separate Methodist Society. Together with Coke, Wesley sent a revision of the Anglican Prayerbook and the Articles of Religion which were received and adopted by the Baltimore Christmas Conference of 1784, officially establishing the Methodist Episcopal Church. The conference was held at the Lovely Lane Methodist Church, considered the Mother Church of American Methodism.

Question:
When did Wesley appoint Thomas Coke as bishop?

1784