1. The city of Monterey was founded on March 3, 1770, making it one of the oldest cities in California. Its early history was tied to Spanish colonialism, and it played a significant role in the state's development during the 19th century.

2. On March 3, 1851, the state of California authorized the creation of the California State Police, which was later renamed the California Highway Patrol. Today, the CHP is one of the largest law enforcement agencies in the state, with over 11,000 employees.

3. The Golden Gate Bridge, one of California's most iconic landmarks, began construction on March 3, 1933. The bridge opened to the public on May 27, 1937, and has since become a symbol of San Francisco and the state as a whole.

4. On March 3, 1959, the Clarnell Strandberg murder case shocked the state when the daughter of a prominent former military officer was found brutally murdered in her home. The prime suspect was her son, who later became known as the infamous serial killer Edmund Kemper.

5. California's first emergency alert system, known as the Emergency Digital Information Service (EDIS), was launched on March 3, 2012. The system is designed to quickly notify residents of impending danger or emergency situations, such as natural disasters or terrorist attacks.