International Free Money Day
International Free Money Day is held on September 15. This event in the second decade of the month September is annual. 
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Global event held since 2011 as a social experiment and to promote sharing and alternative economic ideas. The day is held annually on September 15, the anniversary of the Lehman Brothers' 2008 filing for bankruptcy.
Similar holidays and events, festivals and interesting facts
Accountant's Day in Chile on September 13
Argentine Economist Day on September 21
Accountant's Day in Brazil on September 22
National Accountant and Accounting Day in Venezuela on September 27
Beginning of the United States' Fiscal Year on October 1
Accountant and Auditor Day in Kazakhstan on October 6
World Economist Day on October 12 (the day when outstanding representatives of the profession are awarded a prize by decision of the Nobel Committee);
National Day of the Economist in Ukraine on October 12 (celebrated in conjunction with the World Day of Economists)