1. In 1818, the Rhode Island State Library was established, making it the oldest state library in the United States still in operation today.

2. On July 20, 1868, the Rhode Island Constitutional Convention adopted a new state constitution, which still forms the basis of the state's government today.

3. The first public zoo in Rhode Island was founded in Providence on July 20, 1872, making it one of the oldest zoos in the country.

4. On July 20, 1969, as Rhode Islanders joined the world in watching the first moon landing, local residents also experienced a significant earthquake that shook buildings across the state.

5. In 1973, Rhode Island Governor Philip Noel granted clemency to 31 inmates serving time at the Adult Correctional Institutions, marking one of the largest mass pardons in state history. July 20 is celebrated in Rhode Island every year as "Clemency Day" to recognize this historic event.