Every day is a good day to support environmental causes or promote sustainability, but there are some days where coordinated international action can amplify your impact.
This environmental calendar lists important environment days and sustainability awareness days observed and celebrated worldwide in 2026.
January
26 January – International Day of Clean Energy
31 January – International Zebra Day
February
2 February – World Wetlands Day
10 February – International Day of the Arabian Leopard
14 February – World Bonobo Day
21 February – World Pangolin Day
22 February – World Whale Day
27 February – International Polar Bear Day
March
1 March – World Seagrass Day
3 March – World Wildlife Day
9-13 March – Food Waste Action Week
13 March – Solar Appreciation Day
14 March – International Day of Action for Rivers
18 March – Global Recycling Day
20 March – World Rewilding Day
21 March – World Day for Glaciers
21 March – Digital Cleanup Day
21 March – International Day of Forests
22 March – World Water Day
23 March – World Meteorological Day
28 March – Earth Hour
30 March – International Day of Zero Waste
April
4 April – World Civet Day
7 April – International Beaver Day
17 April – Bat Appreciation Day
20-26 April – Fashion Revolution Week
22 April – International Mother Earth Day
25 April – World Penguin Day
May
2 May – World Tuna Day
3 May – International Leopard Day
3-9 May – International Compost Awareness Week
9 May – World Migratory Bird Day
12 May – International Day of Plant Health
20 May – World Bee Day
22 May – International Day for Biological Diversity
23 May – World Turtle Day
24 May – International Day of the Markhor
27 May – World Otter Day
30 May – International Day of the Potato
31 May – World Parrot Day
June
3 June – World Bicycle Day
5 June – World Environment Day
7 June – World Food Safety Day
8 June – World Oceans Day
11 June – International Lynx Day
15 June – Global Wind Day
16 June – World Refill Day
17 June – World Day to Combat Desertification and Drought
18 June – Sustainable Gastronomy Day
21 June – World Giraffe Day
22 June – World Rainforest Day
29 June – International Day of the Tropics
July
1-31 July – Plastic Free July
11 July – World Horse Day
14 July – Shark Awareness Day
16 July – World Snake Day
28 July – World Nature Conservation Day
August
10 August – World Lion Day
12 August – World Elephant Day
13 August – International Wolf Day
19 August – World Orangutan Day
23-27 August – World Water Week
27 August – World Lake Day
September
7 September – International Day of Clean Air for Blue Skies
16 September – International Day for the Preservation of the Ozone Layer
19 September – International Red Panda Day
20 September – World Cleanup Day
21 September – Zero Emissions Day
22 September – World Car Free Day
22 September – World Rhino Day
24 September – World Gorilla Day
29 September – International Day of Awareness of Food Loss and Waste
October
1 October – World Vegetarian Day
4 October – World Animal Day
5 October – World Habitat Day
7 October – World Energy Efficiency Day
10 October – World Migratory Bird Day
14 October – International E-Waste Day
16 October – World Food Day
20 October – International Sloth Day
23 October – International Day of the Snow Leopard
24 October – Freshwater Dolphin Day
November
1 November – World Vegan Day
26 November – World Sustainable Transport Day
27 November – Buy Nothing Day
29 November – International Jaguar Day
6 November – International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
December
4 December – Wildlife Conservation Day
5 December – World Soil Day
11 December – International Mountain Day
