Surigao City Charter Day is observed in Surigao City, Surigao del Norte, Philippines, every August 31. This special non-working holiday commemorates the day Surigao was converted from a municipality to a city on August 31, 1970. The celebration includes various festivities such as a solemn thanksgiving mass, celebratory speeches, a Grand Float Parade, sports competitions, concerts, and other events organized by the Surigao City Tourism and Cultural Affairs Office along with local businesses and organizations. Surigao City, the provincial capital, is one of the major centers of politics, commerce, and education in the Caraga Region. The city has a rich history, having been established as a settlement in 1655 and serving as a significant port town in Mindanao. Its economic growth, particularly in the mining industry, has contributed to its development over the years.