Independence Day in Nicaragua is observed every September 15 and is a national holiday celebrating the anniversary of the country's declaration of independence from Spain in 1821. The Spanish conquistadors first arrived in the region in 1524, establishing settlements that would become the towns of Granada and León. The independence movement in Central America began in the early 19th century, culminating in Nicaragua's declaration of independence along with other territories of the Captaincy General of Guatemala. Shortly after this declaration, Nicaragua became part of the First Mexican Empire, gaining full independence in 1823 and later forming the Federal Republic of Central America with neighboring countries. This day is marked by various celebrations and activities that honor the nation's history and heritage.