1. Groundhog Day: The popular American tradition of Groundhog Day which is celebrated on February 2 every year finds its roots in Connecticut. The tradition of predicting the weather based on the behavior of the groundhog has been celebrated here since the early 18th century.

2. First telephone exchange: In 1878, the first commercial telephone exchange began operations in New Haven, Connecticut. This exchange allowed people to connect with each other via phone for the first time, revolutionizing communication.

3. Wesleyan University founded: February 2, 1831, marks the chartering of Wesleyan University in Middletown, Connecticut. This private liberal arts college has produced notable alumni such as Lin-Manuel Miranda, Joss Whedon, and Bill Belichick.

4. First nuclear-powered submarine launched: On February 2, 1954, the USS Nautilus, the first nuclear-powered submarine in the world, was launched in Groton, Connecticut. This was a significant achievement in naval technology and paved the way for future advancements in submarine technology.

5. The Great Blizzard of 1978: February 1-6, 1978, saw one of the worst blizzards to hit Connecticut, with some areas of the state receiving up to 40 inches of snow. This event disrupted transportation and daily life for weeks and resulted in several fatalities.