World Wetlands Day | 02-02: February 2 |
International Polar Bear Day | 02-27: February 27 |
World Wildlife Day | 03-03: March 3 |
Solar Appreciation Day | Second Friday of March |
International Day of Action for Rivers | 03-14: March 14 |
World Consumer Rights Day | 03-15: March 15 |
World Sparrow Day | 03-20: March 20 |
International Day of Forests | 03-21: March 21 |
World Planting Day | 03-21: March 21 |
World Wood Day | 03-21: March 21 |
World Water Day | 03-22: March 22 |
Earth Day | 04-22: April 22 |
World Fish Migration Day | April 21, 2018 |
Day of Remembrance for all Victims of Chemical Warfare | 04-29: April 29 |
Green Up Day | 05: first Saturday of May in Vermont |
Greenery Day | 05-04: May 4 in Japan (previously April 29) |
World Migratory Bird Day | second Saturday in May |
International Migratory Bird Day | second Saturday in May (in the U.S. and Canada) and second Saturday in October (in Mexico, Central and South America, and the Caribbean) |
International Recycling Day | May 17th, 2017 |
Endangered Species Day | 05-19: May 19 |
International Day for Biological Diversity (World Biodiversity Day) | 05-22: May 22 |
World Turtle Day | 05-23: May 23 |
European day of parks (Europarc) | 05-24: May 24 |
Bike-to-Work Day | 05: third Friday in May |
World Environment Day | 06-05: June 5 |
World Oceans Day | 06-08: June 8 |
Coral Triangle Day | 06-09: June 9 |
Global Wind Day | 06-15: June 15 |
World Sea Turtle Day | 06-16: June 16 |
World Day to Combat Desertification and Drought | 06-17: June 17 |
World Giraffe Day | 06-21: June 21 |
World Population Day | 07-11: July 11 |
International Tiger Day | 07-29: July 29 |
World Lion Day | 08-10: August 10 |
World Elephant Day | 08-12: August 12 |
World Orangutan Day | 08-19: August 19 |
National Honey Bee Day | 08-22: August 22 |
Amazon Day | 09-05: September 5 |
International Day for the Preservation of the Ozone Layer | 09-16: September 16 |
World Cleanup Day | 09-15: September 15, 2018 |
World Water Monitoring Day | 09-18: September 18 |
Zero Emissions Day | 09-21: September 21 |
Car Free Day | 09-22: September 22 |
World Rhino Day | 09-22: September 22 |
Ecological Debt Day (Earth Overshoot Day) | 09-23: September 23 in 2008, but receding |
World Environmental Health Day | 09-26: September 26 since 2011 (IFEH) |
World Rivers Day | 09: last Sunday in September |
World Habitat Day | 10: first Monday in October |
World Animal Day | 10-04: October 4 |
Energy Efficiency Day | 10-05: October 5 since 2016 |
International Day for Natural Disaster Reduction | 10: second Wednesday in October , October 13. |
Sustainability Day | 10: fourth Wednesday of October |
International Snow Leopard Day | October 23 |
International Day of Climate Action | 10-24: October 24 |
World Vegan Day | 11-01: November 1 |
International Day for Preventing the Exploitation of the Environment in War and Armed Conflict | 11-06: November 6 |
America Recycles Day | 11-15: November 15 |
World Soil Day | 12-05: December 5 |
International Mountain Day | 12-11: December 11 |
Ozone Action Day | at certain times during the summer months |
eDay | variable date |