Estonia Flag Day
Estonia Flag Day is held on June 4. This event in the first decade of the month June is annual. 
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The Estonian Students’ Society adopted blue, black and white as the colours of their student fraternity on 4 June 1884. In 1918, the flag officially became the Estonian national flag. The tricolour has since become one of the most important symbols in the independence, consciousness and solidarity of the Estonian people.
Similar holidays and events, festivals and interesting facts
European Siblings' Day on May 31
Birthday of Carl Gustaf Emil Mannerheim & Flag Day celebration of the Finnish Defence Forces on June 4
Peru Flag Day on June 7 (Día de la Bandera);
Day of Valdemar and Reunion Day in Denmark on June 15
Argentina National Flag Day on June 20 (Día de la Bandera);
Estonian Victory Day on June 23 (Võidupüha);
Romania Flag Day on June 26
Crimean Tatars National Flag Day in Ukraine on June 26