Vianney (1950s – currently August 4) Mary Sumner (Church of England) Nath Í of Achonry Romanus Ostiarius Secundian, Marcellian and Verian August 9 (Eastern Orthodox liturgics) International Day of the World's Indigenous Peoples (United Nations) Meyboom (Brussels and Leuven, Belgium) National Day, celebrates the independence of Singapore from Malaysia in 1965. National Peacekeepers' Day, celebrated on Sunday closest to the day (Canada) National Women's Day (South Africa) References External links Days of the year August