Catholic holy days, such as Christmas and Good Friday, are observed as national holidays, with local saints' days being observed as holidays in different towns and cities. The Hispanic-influenced custom of holding fiestas in honour of patron saints have become an integral part of Filipino culture, as it allows for communal celebration while serving as a time marker for the year. A nationwide fiesta occurs on the third Sunday of January, on the country-specific Feast of the Santo Niño de Cebú. The largest celebrations are the Sinulog Festival in Cebu City, the Ati-Atihan in Kalibo, Aklan, and the Dinagyang in Iloilo City (which is instead held on the fourth Sunday of January).