January
- 5National Bird Day
- 10Houseplant Appreciation Day
- ~18Energy Saving Week (january 19 to 25)
- 20Take a Walk Outdoors Day
- 21Squirrel Appreciation Day
- 24Mobile Phone Recycling Day
- 26International Environmental Education Day
- 28Reducing CO2 Emissions Day
February
- 2World Wetlands Day
- 5Western Monarch Day
- ~8National Secondhand Wardrobe Week (february 9 to 15)
- 15World Hippo Day
- ~21World Whale Day (third Saturday of February)
- ~23National Invasive Species Awareness Week (february 23 to 27)
- 27International Polar Bear Day
March
- 3World Wildlife Day
- ~8Groundwater Awareness Week (march 8 to 14)
- 12Plant a Flower Day
- ~13Solar Appreciation Day (second Friday in March)
- 18Global Recycling Day
- 20World Rewilding Day
- 21International Day of Forests
- 22World Water Day
- 23World Bear Day
- ~28Earth Hour (the fourth Saturday of March)
- 30International Day of Zero Waste
April
- 3World Aquatic Animal Day
- ~5National Wildlife Week (april 5 to 9)
- ~6Community Garden Week (april 6 to 12)
- 7International Beaver Day
- 14National Gardening Day
- ~18National Park Week (april 18 to 26)
- 22Earth Day
- ~24Arbor Day (last Friday of April)
- ~29Stop Food Waste Day (last Wednesday in April.)
May
- ~3National Wildflower Week (may 3 to 9)
- 4Greenery Day
- ~8National Public Gardens Day (second Friday in May)
- ~9World Fair Trade Day (second Saturday of May)
- ~9World Migratory Bird Day (the Second Saturday in May)
- ~11National Bike to Work Week (may 11 to 17)
- ~15Endangered Species Day (third Friday in May)
- ~15Bike to Work Day (third Friday in May)
- ~16National River Cleanup Day (third Saturday in May)
- 20World Bee Day
- 22International Day for Biological Diversity
- ~23National Children’s Gardening Week ( May 23 to May 31st)
- 23World Turtle Day
- 29Learn About Composting Day
- 31World No Tobacco Day
June
- ~1Canadian Environment Week (june 1 to 7)
- 1Wild Salmon Day
- 1World Reef Awareness Day
- 5World Environment Day
- 6World Green Roof Day
- ~6National Trails Day (first Saturday in June)
- 8World Ocean Day
- ~15Pollinator Week (june 15 to 21)
- ~15Animal Rights Awareness Week (june 15 to 21)
- 15Global Wind Day
- 21Show Your Stripes Day
- 21National Indigenous Peoples Day
- 22World Rainforest Day
- 24Upcycling Day
July
- 3International Plastic Bag Free Day
- 10Global Energy Independence Day
- 14National Be Nice to Bugs Day
- 15Arctic Sea Ice Day
- ~18National Moth Week (july 18 to 26)
- ~25National Marine Week (july 25 to August 9)
- 26International Day for the Conservation of the Mangrove Ecosystem
- 28World Nature Conservation Day
- 29International Tiger Day
August
- ~2National Farmers’ Market Week (august 2 to 8)
- 10World Lion Day
- 12World Elephant Day
- 17National Thrift Shop Day
- 30International Whale Shark Day
September
- ~7Zero Waste Week (september 7 to 11)
- ~19World Cleanup Day (third Saturday of September)
- ~20National Forest Week (september 20 to September 26)
- ~20National Indoor Plant Week (september 20 to 26)
- 21Zero Emissions Day
- 22World Rhino Day
- 23National Tree Day
- ~27World Meat Free Week (september 27 to October 3)
- ~27World Rivers Day (fourth Sunday of September)
- 29International Day of Awareness of Food Loss and Waste
October
- 1World Vegetarian Day
- 4No Disposable Cup Day
- 4World Animal Day
- 12Youth Climate Adaptation Action Day
- 14International E-Waste Day
- 16World Food Day
- 21National Reptile Day
- ~28World Sustainability Day (last Wednesday in October)
- 31World Cities Day
November
- ~1Polar Bear Week (november 1 to 7)
- 1World Vegan Day
- 15National Recycling Day
- ~19Use Less Stuff Day (third Thursday of November)
- ~27Buy Nothing Day (the day after American Thanksgiving)
December
- 4World Wildlife Conservation Day
- 5World Soil Day
- 10International Animal Rights Day
- 11International Mountain Day
- ~13Christmas Bird Count (december 14 to January 5)
