Willie Mays Day is celebrated on February 4, honoring the legendary baseball player Willie Mays, who is recognized as one of the greatest players in Major League Baseball history. The date, February 4, or 2/4, is significant as it corresponds to Mays' iconic jersey number 24, which he wore during his career with the New York Giants and later the San Francisco Giants. The first celebration took place in San Francisco, inspired by a collaboration involving Adam Swig, the California nonprofit Value Culture, and the mayor’s office. Typical customs include celebrating Mays' achievements, such as his 20 All-Star selections, two National League MVP awards, and his induction into the Baseball Hall of Fame. The day serves as an appreciation of Mays' impact on baseball and his enduring legacy.