Traditionally celebrated on February 22, Washington’s actual day of birth, the holiday became popularly known as Presidents’ Day after it was moved as part of 1971’s Uniform Monday Holiday Act, an attempt to create more three-day weekends for the nation’s workers.

While several states still have individual holidays honoring the birthdays of Washington, Abraham Lincoln and other figures, Presidents’ Day is now popularly viewed as a day to celebrate all U.S. presidents past and present.