1. On December 27, 1851, the first round-the-world clipper ship, the Flying Cloud, completed its maiden voyage from New York to San Francisco in only 89 days, setting a new record for the fastest sailing time between the two cities. The Flying Cloud was built in East Boston at the height of the clipper ship era, and her success paved the way for other fast and efficient vessels like her.

2. In 1835, the historic Salem Maritime National Historic Site in Salem, Massachusetts was established to preserve and interpret the city's maritime history. The site includes several historic buildings and ships, as well as a museum and visitor center. The site was designated a National Historic Landmark in 1935, and today it is a popular destination for tourists and history enthusiasts.

3. On December 27, 1814, the Boston Manufacturing Company opened its factory in Waltham, Massachusetts, becoming one of the first large-scale textile production facilities in the United States. The company revolutionized the industry by implementing the use of standardized power looms and other machinery, and it helped to establish Massachusetts as a leading center of industrial production.

4. In 1949, the Boston Celtics played their first-ever game at the Boston Garden, defeating the Minneapolis Lakers 77-55. The Celtics went on to become one of the most successful franchises in NBA history, winning a total of 17 championships over the course of their history. The Boston Garden was also the site of many other historic events, including concerts by the Beatles and the Rolling Stones.

5. December 27, 2002 is remembered as one of the worst days in Massachusetts history, as a devastating fire tore through the Worcester Cold Storage warehouse, killing six firefighters who were trapped inside. The incident shocked the state and led to increased safety measures for firefighters and other emergency responders. Today, a memorial at the site of the fire remembers the fallen heroes and serves as a reminder of the bravery and sacrifice of those who put their lives on the line to protect others.