National Grandparents Day is a secular holiday celebrated in the United States of America and the United Kingdom since 1978 and officially recognized in a number of countries on various days of the year, either as one holiday or sometimes as a separate Grandmothers' Day and Grandfathers' Day (for the first time Grandma's Day was celebrated in Poland in 1965,"see below for dates by country").
 One celebrates "both" paternal and maternal grandparents.
Saint-Jean-Baptiste Day (French: "Fête de la Saint-Jean-Baptiste" ), officially known in Quebec as the National Holiday, (French: "la fête nationale" ) is a holiday celebrated annually on June 24, the feast day of the Nativity of St. John the Baptist.
 In Quebec, it is a public holiday with festivities occurring on June 23 and 24 which are publicly financed and organized by a "Comité organisateur de la fête nationale" (National Holiday Organizing Committee).
 June 24 is also celebrated as a festival of French Canadian culture in other Canadian provinces and the United States.
Thanksgiving, or Thanksgiving Day, is a public holiday celebrated on the fourth Thursday of November in the United States.
 It originated as a harvest festival.
 Thanksgiving has been celebrated nationally on and off since 1789, after Congress requested a proclamation by George Washington.
 It has been celebrated as a federal holiday every year since 1864, when, during the American Civil War, President Abraham Lincoln proclaimed a national day of "Thanksgiving and Praise to our beneficent Father who dwelleth in the Heavens," to be celebrated on the last Thursday in November.
 Together with Christmas and the New Year, Thanksgiving is a part of the broader holiday season.
The Prešeren Day, the full name being Prešeren Day, the Slovene Cultural Holiday (Slovene: "Prešernov dan, slovenski kulturni praznik" ), is a public holiday celebrated in Slovenia on 8 February.
 It is marking the anniversary of the death of the Slovene national poet France Prešeren on 8 February 1849 and is the celebration of the Slovenian culture.
 It was established in 1945 to raise the cultural consciousness and the self-confidence of the Slovene nation, and declared a work-free day in 1991.
 On February 7, the eve of the holiday, the Prešeren Awards and the Prešeren Fund Awards, the highest Slovenian recognitions for cultural achievements, are conferred.
 Prešeren Day continues to be one of the most widely celebrated Slovene holidays.
 It is not only celebrated in Slovenia, but by Slovene communities all around the world.
Oranjegekte (Orange craze) or Oranjekoorts (Orange fever) is a phenomenon in the Netherlands that occurs during major sporting events, especially international football championships, and during Koningsdag, an annual holiday celebrating the king's birthday.
 It manifests itself in the wearing of orange clothing such as T-shirts, caps and scarfs; lavish attention for sports and sports fans in the media; and the decoration of cars, rooms, houses, shops, and even entire streets in orange, the traditional color of the Dutch royal family, the House of Orange-Nassau.
Koningsdag (] ) or King's Day is a national holiday in the Kingdom of the Netherlands.
 Celebrated on 27 April (26 April if the 27th is a Sunday), the date marks the birth of King Willem-Alexander.
Thanksgiving Day is a national holiday celebrated in Canada, the United States, some of the Caribbean islands, and Liberia.
 It began as a day of giving thanks for the blessing of the harvest and of the preceding year.
 Similarly named festival holidays occur in Germany and Japan.
 Thanksgiving is celebrated on the second Monday of October in Canada and on the fourth Thursday of November in the United States, and around the same part of the year in other places.
 Although Thanksgiving has historical roots in religious and cultural traditions, it has long been celebrated as a secular holiday as well.
Monkey Day is an unofficial holiday celebrated internationally on December 14.
 The holiday celebrates monkeys and "all things simian," including other non-human primates such as apes, tarsiers, and lemurs. Monkey Day was created and popularized by artists Casey Sorrow and Eric Millikin, in order to spread awareness for the animals, and to show love and care for them.
 It is celebrated worldwide and often known as "World Monkey Day."
Boxing Day is a holiday celebrated the day after Christmas Day.
 It originated in the United Kingdom, and is celebrated in a number of countries that previously formed part of the British Empire.
 Boxing Day is on 26 December, although the attached bank holiday or public holiday may take place either on that day or two days later.
Armed Forces Day, known also as the Feast of the Polish Armed Forces (Polish: "Święto Wojska Polskiego" ), is a national holiday celebrated annually on 15 August in Poland, commemorating the anniversary of the 1920 victory over Soviet Russia at the Battle of Warsaw during the Polish–Soviet War.
 Armed Forces Day is held in conjunction with the Day of the Assumption of the Virgin Mary, itself a separate public holiday.
 The event is marked by military parades, equipment reviews, showcases and remembrances by all branches of the Polish Armed Forces across the country.
 One of the most prominent events of the day is in the capital Warsaw, which hosts a large military parade through the city's center.
 Originally celebrated during the Second Republic, the holiday was barred by authorities during the communist era beginning in 1947, only to be revived again in 1992.

Question: Oranjegekte takes place during the holiday celebrated on what day?
Answer: 27 April