World Art Day
World Art Day is held on April 15. This event in the second decade of the month April is annual. 
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World Art Day is an international celebration of the fine arts, which was declared by the International Association of Art (IAA/AIAP), a partner of UNESCO, to promote awareness of creative activity worldwide. The first World Art Day was held on April 15th, 2012, a date chosen in honor of Leonardo da Vinci's birthday.
Source: iaa-usa.org
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Universal Day of Culture on April 15
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