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European Cooperation Day

European Cooperation Day is held on September 21. This event in the third decade of the month September is annual. Help us Help us 
21 September - European Cooperation Day
Europe is a mix of cultures and economies that need to understand each other in order to reach their maximum potential. We commemorate the European Cooperation Day (also known as EC Day) on 21 September every year.
Source: ecday.eu

Similar holidays and events, festivals and interesting facts

World Gratitude DayWorld Gratitude Day on September 21 (First celebrated in 1965);
World CML DayWorld CML Day on September 22 (Since 2008, patient organizations around the world have initiated events and projects on "CML Awareness Day" on September 22 to raise awareness of the needs of patients living with Chronic Myeloid Leukemia);
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