1. On June 21, 1781, British troops led by General William Tryon burned down the town of Fairfield, Connecticut during the American Revolutionary War. The town was left in ruins, with over 100 homes destroyed and many residents left homeless.

2. June 21, 1877 marked the opening ceremony for the new Connecticut State Capitol building, located in Hartford. The building, designed by architect Richard M. Upjohn, is an impressive example of Victorian Gothic architecture and is listed on the National Register of Historic Places.

3. On June 21, 1881, the Brooklyn Bridge, which connects Brooklyn to Manhattan in New York City, officially opened to the public. Many residents of Connecticut made the trip to New York to witness the historic event and walk across the bridge.

4. In 1918, June 21 marked the beginning of a deadly heat wave that would sweep across the northeastern United States, including Connecticut. Temperatures soared to over 100 degrees Fahrenheit, resulting in hundreds of deaths and widespread illness.

5. On June 21, 1989, Connecticut Governor William O'Neill signed into law the state's first income tax. The tax, which was highly controversial at the time, was implemented in response to a budget crisis and has been a key source of revenue for the state ever since.