Grand Duke's Official Birthday in Luxembourg
Grand Duke's Official Birthday in Luxembourg is held on June 23. This event in the third decade of the month June is annual. 
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The official birthday of the Grand Duke is celebrated as an annual national holiday of Luxembourg. It is celebrated on June 23, although it has never been the birthday of any ruler of Luxembourg. When the monarch of Luxembourg is a woman, it is called the official birthday of the Grand Duchess.
The constitution of Luxembourg defines the grand duke's position: The grand duke is the head of state, symbol of its unity, and guarantor of national independence. He exercises executive power in accordance with the constitution and the laws of the country.
The Grand Duke's regulatory power consists in taking the regulations and administrative orders required for the enforcement of laws and treaties. In some cases he may delegate this power to the members of his government. Article 74 of the Constitution provides that the Grand Duke may dissolve the Chamber of Deputies.
Luxembourg's prosperity was formerly based on steel manufacturing. With the decline of that industry, Luxembourg diversified and is now best known for its status as Europe's most powerful investment management centre.
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World Naturist Day on June 7 (Starts on the first Sunday of June in the northern hemisphere and on the first Sunday of December in the southern hemisphere);
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);
Schueberfouer Luxembourg on August 23
St. Bartholomew's Day in the Catholic and Protestant churches on August 24
Father's Day in Luxembourg on October 5 (first Sunday in October);
All Saints' Day a holy day of obligation on November 1 (a national holiday in many historically Catholic countries. And its related observance: Day of the Innocents, The first day of Day of the Dead or El Dia de los Muertos celebration. - Mexico, Haiti);
Feast of St. Willibrord in Luxembourg on November 7 (patron saint of the Grand Duchy)
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