1. On September 1, 1777, the Battle of Groton Heights took place during the American Revolution. British troops led by Benedict Arnold burned down the town of New London and attacked the fort at Groton Heights, killing over 80 Patriots.

2. September 1, 1819, marked the opening of the Hartford and New Haven Railroad, the first regularly scheduled passenger rail service in the United States.

3. In 1909, the first airplane flight in Connecticut took place on September 1 at the Connecticut State Fair in Hartford. Aviator Thomas Baldwin soared over the fairgrounds in his dirigible, the California Arrow.

4. On September 1, 1942, Pratt & Whitney Aircraft Corporation in East Hartford began production of the F4U Corsair fighter planes used by the US during World War II. Over 12,000 Corsairs were built at the plant by the end of the war.

5. The Connecticut Veterans Memorial Highway, also known as Interstate 84, officially opened on September 1, 1961. The 86-mile highway stretches from Danbury to the Massachusetts border, connecting cities and towns across the state.