As part of the Federal Republic of Central America, Guatemala used a flag with horizontal bands of blue, white, and blue again from 1825 to 1851. After 1851, the Spanish national colors, red and yellow, were incorporated into the design until 1871, when the current flag was chosen. The new flag distinguished itself by using vertical stripes and adding the Guatemalan coat of arms, which was adopted in 1868. Flag Day is celebrated on August 17.