Before Hispanic Heritage Month became a month of celebration, the observation was only held for a week in 1968 under President Lyndon B. Johnson. Two decades later, on Aug. 17, 1988, President Ronald Reagan signed a law that expanded it to a 30-day period starting from Sept. 15 to Oct. 15 annually, the Census said.

Huge celebrations across the U.S. are expected to celebrate National Hispanic Heritage Month, an annual tradition that showcases the awe-inspiring diversity and culture of Hispanic people.