Inventors' Day in Hungary
Inventors' Day in Hungary is held on June 13. This event in the second decade of the month June is annual. 
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The Day of the Hungarian Inventors was established in honor of Albert Szent-Gyorgyi, who on this day in 1941 registered his national patent for the synthesized vitamin C. Albert Szent-Gyorgyi also received the Nobel Prize in Physiology or Medicine in 1937.
The Hungarian Inventors' Association (MAFE) has been celebrating since 2009.
Similar holidays and events, festivals and interesting facts
Teacher's Day in Hungary on June 6 (celebrated on the first Sunday in June);
Day of the Independent Hungary on June 19
Father's Day on June 20 (Сelebrated on the third Sunday of June шт Argentina, Aruba, Canada, Costa Rica, France, Greece, Hong Kong, Hungary, India, Ireland, Kenya, Japan, Macao, Malaysia, Malta, Mexico, Netherlands, Pakistan, Peru, Puerto Rico, Singapore, Slovakia, South Africa, Sri Lanka, Trinidad and Tobago, Turkey, Venezuela, United Kingdom);
Day of Officials and Civil Servants in Hungary on July 1
Foundation Day, Constitution Day or New Bread Day in Hungary on August 20
National Coffee Day on September 29
Inventors' Day in Argentina on September 29