National Environmental Awareness Day in Argentina
National Environmental Awareness Day in Argentina is held on September 27. This event in the third decade of the month September is annual. 
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Law 24,605 of 1995 declared September 27 as National Environmental Awareness Day in commemoration of the tragedy that occurred on that date in 1993 in the city of Avellaneda, province of Buenos Aires, due to a hydrogen cyanide gas leak.
On this date, the National Agrifood Health and Quality Service (Senasa) recalls that ecosystems provide with a series of services, conditions and processes through which natural ecosystems, and the species that make them up, help maintain and satisfy human life. They also maintain the provision of goods whose harvesting and commercialization represent an important part of the economy.
Similar holidays and events, festivals and interesting facts
National Public Lands Day in USA on September 26 (Held on the fourth Saturday in September);
World Environmental Health Day on September 26
European Mushroom Day on September 26 (Celebrated on the fourth Saturday of September);
International Rabbit Day on September 26 (Held on the fourth Saturday in September);
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);
World Rivers Day on September 27 (last Sunday of September);
Junk Mail Awareness Week on October 1 (Junk mail isn't just annoying. Take a day to think about that and maybe take some action - sign up for Do Not Mail lists, or post a note on your mailbox declaring it a junk mail-free zone);
Day of the Sea and Fishing Wealth in Argentina on October 1
National Tree Day in Bolivia on October 1