January
February
27th International Polar Bear Day
March
Any week in March Waste Week (for Schools)
14th International Day of Action for Rivers
15th World Consumer Rights Day
18th Global Recycling Day
20th World Sparrow Day
21st International Day of Forests
21st World Wood Day
22nd World Water Day
Last week in March The Big Pedal (for Schools)
Last Sunday in March Earth Hour
April
22nd Earth Day
29th Day of Remembrance for all Victims of Chemical Warfare
May
The whole month National Walking Month
First Saturday of May Green Up Vermont
First Sunday of May International Compost Awareness Week
Second Saturday of May World Migratory Bird Day
Second Saturday of May in the Americas World Migratory Bird Day
20th World Bee Day
22nd International Day for Biological Diversity
23rd World Turtle Day
24th European Parks Day – Europarc Federation
31st World No Tobacco Day
June
8th World Oceans Day
15th Global Wind Day
16th World Sea Turtle Day
17th World Day to Combat Desertification and Drought
21st World Giraffe Day
July
The whole month Plastic Free July
11th World Population Day
31st World Ranger Day – International Ranger Federation
August
10th World Lion Day
12th World Elephant Day
19th World Orangutan Day
September
16th International Day for the Preservation of the Ozone Layer
21st Zero Emissions Day
Third Saturday in September World Cleanup Day
22nd World Rhino Day
23rd Ecological Debt Day
26th World Environmental Health Day
Last Sunday of September World Rivers Day
October
First Monday of October World Habitat Day
4th World Animal Day
13th International Day for Natural Disaster Reduction
23rd International Snow Leopard Day
24th International Day of Climate Action
November
6th International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
December
5th World Soil Day
11th International Mountain Day
An Environmentalist's blog 