1. On June 15, 1907, the town of Berkeley, California passed an ordinance to establish the first minimum wage law in the United States. The law required employers to pay workers at least $0.16 an hour.

2. In 1955, the Bank of America introduced the first successful credit card - BankAmericard - in Fresno, California. The card was designed to give consumers a convenient way to pay for goods and services and revolutionized the way people did business.

3. Los Angeles Lakers legend Magic Johnson was born on June 15, 1959, in Lansing, Michigan. Johnson became one of the most iconic and influential basketball players of all time and won five NBA championships during his career.

4. On June 15, 1991, the National Basketball Association (NBA) championship was won by the Chicago Bulls for the first time in 16 years. The team was led by Michael Jordan, who scored 30 points in the final game to secure their victory against the Los Angeles Lakers.

5. June 15, 2017, marked the grand opening of the new Golden 1 Center in downtown Sacramento, California. The arena is home to the NBA's Sacramento Kings and is renowned for its innovative design, sustainability features, and state-of-the-art technology.