1. In 1683, the first meeting of the New York General Assembly took place on October 3 in the newly established city of New York. This marked the beginning of the colonial legislative body in the colony of New York.

2. On October 3, 1789, President George Washington made his first visit to New York City as president. He was welcomed by a parade and a crowd of admirers, and stayed at the home of Governor George Clinton.

3. The New York Stock Exchange experienced its worst day in history on October 3, 1929, the start of the stock market crash that led to the Great Depression. The Dow Jones Industrial Average fell 12.82%, marking the beginning of a financial crisis that would eventually affect the entire world.

4. The Metropolitan Opera House at Lincoln Center in New York City opened its doors on October 3, 1966. With its impressive modern architecture, the new opera house helped establish Lincoln Center as a cultural hub of New York City.

5. On October 3, 1995, O.J. Simpson was acquitted of murder charges in the highly publicized trial for the deaths of his ex-wife Nicole Brown Simpson and her friend Ron Goldman. The verdict was controversial and polarizing, sparking discussions about race, privilege, and justice in America.