1. On September 20, 1641, the first court was held in Connecticut. Governor John Haynes presided and cases were heard in the area that is now Hartford.

2. In 1777, the Battle of Paoli took place in Pennsylvania during the Revolutionary War, which had an impact on Connecticut. Connecticut soldiers under the command of General Anthony Wayne fought in the battle and helped to secure a victory for the Continental Army.

3. On September 20, 1880, the Great Hurricane of 1880 passed through Connecticut. The hurricane caused widespread damage and destruction, particularly to coastal areas. Many lives were lost in the storm.

4. In 1948, on September 20th, the University of Connecticut opened its main campus in Storrs. At the time, the school only had a few buildings and a small student body, but it has since grown into a major university with over 30,000 students.

5. On September 20, 1973, the Taft Hotel in New Haven was demolished. The hotel had been a New Haven landmark for over 70 years, but had fallen into disrepair and was deemed too costly to renovate. The demolition was controversial, as many residents wanted the building to be preserved as a historic landmark.