Founding of Asunción in Paraguay
Founding of Asunción in Paraguay is held on August 15. This event in the second decade of the month August is annual. 
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Asunción, city and capital of Paraguay, occupying a promontory and descending to the Paraguay River near its confluence with the Pilcomayo. It is a vastly underrated city. One of the oldest settlements in South America, this sprawling metropolis is home to some striking architecture, fascinating museums, colonial gems and a recently upgraded coastal boardwalk.
The city was so named when a stockade was completed there on the Feast of the Assumption (August 15) in 1537. When Buenos Aires was evacuated in 1541 after an attack by the Pampa Indians, the inhabitants fled to Asunción. It was the headquarters of Spanish colonial activities in eastern South America for nearly half a century before Buenos Aires was refounded.
Similar holidays and events, festivals and interesting facts
Paraguay Flag Day on August 14
Feast day of the Assumption of Mary on August 15 (Christian feast day, one of the Catholic holy days of obligation a public holiday in Austria, Belgium, Benin, Bosnia, Burundi, Cameroon, Chile, Colombia, Croatia, Cyprus, France, Germany, Greece, Guatemala, Hungary, Italy, Ivory Coast, Lebanon, Liechtenstein, Lithuania, Luxembourg, Macedonia, Madagascar, Malta, Mauritius, Monaco, Paraguay, Poland, Portugal, Romania, Senegal, Seychelles, Slovenia, Spain, Switzerland, Togo, and Vanuatu);
Children's Day in Paraguay on August 16
Folklore Day in Paraguay on August 22
Guarani Language Day in Paraguay on August 25
International Day against Dengue on August 26
World Hygiene Day on September 3