1. Salem Witch Trials Begin: On February 29, 1692, the Salem Witch Trials began in Massachusetts. The first arrest was made that day and the trials continued until May of that year. 20 people were executed for witchcraft and many others were imprisoned.

2. Leap Year Babies: February 29 only occurs once every four years, making people born on that day unique. In Massachusetts, there are approximately 5,000 “leaplings” who have celebrated fewer than 20 birthdays.

3. First Women's Basketball Game: On February 29, 1892, the first women's basketball game was played in the United States. The game was played at Smith College in Northampton, Massachusetts and featured a court that was divided into three sections. This event laid the foundation for women’s basketball as we know it today.

4. Boston Massacre: On February 29, 1770, two British soldiers were arrested after getting into a fight with a local rope maker in Boston. This led to a group of colonists surrounding the soldiers, resulting in the soldiers firing their muskets into the crowd, killing five and injuring six others. This event, known as the Boston Massacre, played a significant role in the lead-up to the American Revolution.

5. First Outdoor Hockey Game: On February 29, 1952, the first outdoor professional hockey game was played in Massachusetts. The game was between the Hershey Bears and the Clinton Comets at the Hull Olympic Stadium in Quincy. Over 11,000 fans braved the cold weather to witness the historic event.