1. On September 6, 1781, Revolutionary War forces under General Rochambeau arrived in Hartford, Connecticut as part of the march to Yorktown, Virginia. The French forces collaborated with American forces in the battle that ultimately led to the defeat of British forces at Yorktown and the end of the war.

2. In 1764, the Connecticut General Assembly granted a charter to establish a new college in New Haven, which would ultimately become Yale University. September 6 serves as one of the official Tour Days for incoming freshmen at Yale, during which they explore the campus and attend informational sessions.

3. On September 6, 1955, tragic flash floods struck the town of Winsted, Connecticut. The sudden and devastating floodwaters caused widespread damage and claimed several lives, leading to renewed efforts in the state to address flood preparedness and safety measures.

4. In 1991, the USS Connecticut, a United States Navy attack submarine, was christened in Groton, CT. The submarine carries the name of the state and is one of the most advanced and capable vessels of its kind in the world.

5. In 1973, Connecticut Governor Thomas Meskill signed the state's landmark Clean Air Act, which established strong new pollution control standards and protections. The legislation has helped to improve air quality and public health in Connecticut, and remains a model for other states seeking to address environmental challenges.