1. On September 13, 1788, Connecticut became the fifth state to ratify the United States Constitution. The Constitution provided a framework for the government and helped to establish the United States as a new nation.

2. One of the most devastating natural disasters in Connecticut's history occurred on September 13, 1878. The Great Wallingford Tornado, which was rated an F4 on the Fujita scale, caused extensive damage and claimed the lives of 34 people.

3. On September 13, 1898, the USS Connecticut was launched in Groton, Connecticut. The battleship was the flagship of the Great White Fleet and served in both World War I and II before being decommissioned in 1923.

4. One of Connecticut's most famous authors, William Gillette, was born on September 13, 1853. Gillette is best known for his portrayal of Sherlock Holmes on stage and his Connecticut home, which he designed to look like the fictional detective's residence, is now a museum and state park.

5. On September 13, 1993, the Connecticut Sun basketball team played their inaugural game in the Women's National Basketball Association (WNBA). The team is based in Uncasville, Connecticut and has been a prominent sports franchise in the state ever since.