European Mushroom Day

World Dream Day on September 25;

World Pharmacist Day on September 25;

European Researchers' Night on September 25;

European School Sports Day on September 25 (the last Friday of Septembe);

International Ataxia Day on September 25;

World’s Largest Pet Walk on September 25 (held since 2018);

Dental Health Day in Germany on September 25;

World Environmental Health Day on September 26;

International Rabbit Day on September 26 (Held on the fourth Saturday in September);

European Day of Languages on September 26 (European Union);

National Organ and Tissue Donation and Transplantation Day in Mexico on September 26;

National Public Lands Day in USA on September 26 (Held on the fourth Saturday in September);

World Rivers Day on September 27 (last Sunday of September);

World Retina Day on September 27 (Held on the last Sunday in September);

European Myeloma Day on September 27;

International Daughters' Day on September 27 (Celebrated on the fourth Sunday of September);

Bladder Cancer Awareness Walk in Canada on September 27 (This charity event began in 2006. It takes place every year on the fourth Sunday in September);

National Gay Men's HIV/AIDS Awareness Day on September 27 (United States);

National Day of the Deaf in El Salvador on September 27 (Día Nacional de la Persona Sorda);

Donor Day in Chile on September 27;

Dentist's Day in Chile on September 27;

National Crush Day in USA on September 27 (It’s a reminder that recycling reduces carbon emissions, saves money, and cuts down on waste. National Crush Day is an opportunity for those who care about the environment to advocate for recycling);