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World Wetlands Day
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02-02: February 2
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International Polar Bear Day
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02-27: February 27
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International Day Of Action for Rivers
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03-14: March 14
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World Sparrow Day
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03-20: March 20
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World Planting Day
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03-20: March 21
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World Water Day
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03-22: March 22
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Earth Day
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04-22: April 22
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Arbor Day
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04: Last Friday in April (each state also has its own observation based on best tree planting time)
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Day of Remembrance for all Victims of Chemical Warfare
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04-29: April 29
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Green Up Day
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05: first Saturday of May in Vermont
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International Migratory Bird Day
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05-03: May 3
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Greenery Day
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05-04: May 4 in Japan (previously April 29)
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International Day for Biological Diversity (World Biodiversity Day)
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05-22: May 22
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Europarc European day of parks
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05-24: May 24
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Bike-to-Work Day
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05: Third Friday in May
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World Environment Day
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06-05: June 5
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World Oceans Day
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06-08: June 8
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Global Wind Day
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06-15: June 15
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Garbage man day
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06-17: June 17 in the United States
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World Day to Combat Desertification and Drought
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06-17: June 17
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World Population Day
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07-11: July 11
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International Tiger Day
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07-29: July 29
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World Elephant Day
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08-12: August 12
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International Day for the Preservation of the Ozone Layer
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09-16: September 16
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Clean Up the World
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09-17 to 09-19: Weekend - September 16-18
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World Water Monitoring Day
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09-18: September 18
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Zero Emissions Day
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09-21: September 21
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Car Free Day
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09-22: September 22
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Ecological Debt Day (Earth Overshoot Day)
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09-23: September 23 in 2008, but receding
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World Environmental Health Day
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09-26: September 26 since 2011 (IFEH)
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World Rivers Day
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09: every last Sunday in September
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World Habitat Day
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10: first Monday in October
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International Day for Natural Disaster Reduction
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10: second Wednesday in October
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International Day of Climate Action
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10-24: October 24
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International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
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11-06: November 6
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America Recycles Day
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11-15: November 15
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World Soil Day
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12-05: December 5
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International Mountain Day
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12-11: December 11
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Ozone Action Day
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at certain times during the summer months
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eDay
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Variable date
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