World Party Day
World Party Day is held on April 3. This event in the first decade of the month April is annual. 
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The idea of a coordinated synchronized worldwide party appeared as a work of fiction in the book Flight, A Quantum Fiction Novel, by American writer Vanna Bonta. In the ending of the book, published in 1995, all people in the world celebrated at the same time. The theme of World Party Day celebrations is a "universal human right to fun, peace and life." The celebration has no religious or political connections.
Similar holidays and events, festivals and interesting facts
National Coffee Day in China on April 1
Qingming Festival on April 4 (清明節 or 清明节 also known as Pure Brightness Festival or Tomb-sweeping Day);
Gardening Festival or Tree Planting Day in South Korea on April 5
Cold Food Party in South Korea on April 5
Black Day on April 14 (South Korea, Japan, Taiwan. An unofficial holiday celebrated annually by single people - unmarried or unmarried people);
Chinese Language Day in China on April 20
Navy Day in China on April 23
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