World Rivers Day
World Rivers Day is held on September 24. Last Sunday of September. This event in the third decade of the month September is annual. 
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The Nile River is widely accepted as the world's longest river. Most scientists agree that the Amazon River comes in a close second, winding a huge 6,840km through the mountains and rainforests of South America.
World Rivers Day is celebrated on the fourth Sunday of September every year to increase public awareness about rivers and to encourage their conservation. The day celebrates Earth's waterways, in which over 60 countries participate every year.
Similar holidays and events, festivals and interesting facts
Day of Combating the Non-Completion of Secondary School Children on September 23
International Day against Sexual Exploitation and Trafficking of Women and Children on September 23 (is celebrated every 23 September. It was jointly established by the World Conference of the Coalition against Trafficking in Persons and the Women’s Conference that took place in January 1999 in Dhaka, Bangladesh);
International Day of Sign Languages on September 23 (adopted by the UN on November 14, 2017);
World Retina Week on September 24
World Retina Day on September 24 (Held on the last Sunday in September);
World Day Against Software Patents on September 24 (Brussels, 2nd September 2008 — A global coalition of more than 80 software companies, associations and developers has declared the 24th of September to be the “World Day Against Software Patents”);
World Cancer Research Day on September 24
World Dream Day on September 25
World Pharmacist Day on September 25
International Ataxia Day on September 25
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