Environmental Calendar
One Heritage™ — Key Dates of the International Environmental Movement
International Environmental Information Campaign "ONE HERITAGE"
KEY DATES
International Environmental Calendar 2026
- 26 JanuaryInternational Day of Clean Energy
- 2 FebruaryWorld Wetlands Day
- 22 MarchWorld Water Day
- April 22International Mother Earth Day
- 22 MayInternational Day for Biological Diversity
- 5 JuneWorld Environment Day
- 26 JulyINTERNATIONAL DAY FOR THE CONSERVATION OF THE MANGROVE ECOSYSTEM
- 9 AugustINTERNATIONAL DAY OF THE WORLD'S INDIGENOUS PEOPLES
- 16 SeptemberInternational Day for the Preservation of the Ozone Layer
- 16 OctoberWORLD FOOD DAY
- 6 NovemberInternational Day for Preventing the Exploitation of the Environment in War and Armed Conflict
- 5 DecemberWorld Soil Day
Environmental Calendar 2026
January 2026
January 26
International Day of Clean Energy
Promoting transition to sustainable renewable energy sources to reduce carbon emissions and combat climate change.
January 31
International Zebra Day
Raising awareness about zebra conservation and African savanna ecosystems.
February 2026
February 2
World Wetlands Day
Protection of wetlands for biodiversity conservation. Commemorates the Ramsar Convention signing (1971).
February 2
World Ostrich Day
Raising awareness about desert and savanna ecosystems.
February 8
World Lizard Day
Recognizing reptile diversity and their role in ecosystems.
February 14
World Bonobo Day
Conservation of bonobos and Congo Basin rainforests.
February 15
World Hippo Day
Protection of hippos and African river ecosystems.
February 15 (3rd Sunday)
World Whale Day
Honoring marine mammals and ocean ecosystems.
February 19
International Marine Mammal Protection Day
Protection of dolphins, whales, seals and other marine mammals.
February 27
International Polar Bear Day
Protection of Arctic ecosystems and polar bears amid climate change.
March 2026
March 1
World Seagrass Day
Recognizing seagrass role in CO₂ storage and coastal protection.
March 3
World Wildlife Day
Conservation of terrestrial and marine fauna, celebrating planetary biodiversity.
March 14
International Day of Action for Rivers
Fighting harmful dams and protecting free-flowing rivers.
March 15
Digital Cleanup Day
Cleaning digital waste to reduce technology's environmental footprint.
March 18
Global Recycling Day
Promoting waste recycling and minimizing garbage.
March 20
World Sparrow Day
Protection of urban birds and biodiversity in urbanized areas.
March 20
World Frog Day
Amphibians as important indicators of ecosystem health.
March 20
World Rewilding Day
Restoration of natural habitats and wildlife return.
March 21
International Day of Forests
Recognizing forests' role in climate regulation and biodiversity conservation.
March 21
World Planting Day
Global tree planting and greening initiatives.
March 22
World Water Day
Sustainable water management and access to clean water.
March 22
International Seal Day
Protection of seals and marine mammals.
March 23
World Meteorological Day
Role of climate and weather systems in ecological balance.
March 28 (last Saturday)
Earth Hour
Global lights-off event from 8:30 to 9:30 PM as a symbol of care for the planet and fight against climate change.
March 30
International Day of Zero Waste
Pollution prevention and movement toward zero-waste economy.
April 2026
April 3
World Aquatic Animal Day
Protection of freshwater and marine animal species.
April 7
International Beaver Day
Recognizing beavers' role in river and wetland ecosystems.
April 17
Bat Appreciation Day
Recognizing nocturnal biodiversity and bats' importance.
April 21
World Fish Migration Day
Ensuring free passage for migratory fish.
April 22
International Mother Earth Day (Earth Day)
Harmony with nature and global environmental actions.
April 23
International Pallas's Cat Day
Conservation of steppe and mountain ecosystems.
April 24
Fashion Revolution Day
Sustainable textiles and waste-free production.
April 27
World Tapir Day
Protection of tapirs and tropical forests.
May 2026
May 2
World Tuna Day
Sustainable fisheries and tuna population protection.
May 9 (2nd Saturday)
World Migratory Bird Day
Protection of migratory birds and coastal habitats. Celebrated twice a year: second Saturday in May and October.
May 12
International Day of Plant Health
Role of healthy plants in food security, sustainable agriculture, and ecosystems.
May 22
International Day for Biological Diversity
Raising awareness about biodiversity and its conservation.
May 23
World Turtle Day
Protection of turtles and their habitats from extinction threats.
June 2026
June 3
World Bicycle Day
Encouraging bicycle use for sustainable transport and emission reduction.
June 5
World Environment Day
Global actions for nature protection and raising environmental awareness.
June 8
World Oceans Day
Conservation of marine ecosystems and fighting ocean pollution.
July 2026
July 3
International Plastic Bag Free Day
Campaign against single-use plastic and for sustainable alternatives.
July 26
International Mangrove Day
Protection of mangrove ecosystems as barriers to climate change.
August 2026
August 10
World Lion Day
Conservation of lion populations and African savannas.
August 20
World Mosquito Day
Prevention of mosquito-borne diseases and ecological control.
September 2026
September 7
International Day of Clean Air for blue skies
Fighting air pollution and promoting clean technologies.
September 16
International Day for the Preservation of the Ozone Layer
Celebrating the success of the Montreal Protocol in protecting the ozone layer.
September 19 (3rd Saturday)
International Coastal Cleanup Day
Global actions to clean beaches and oceans of waste.
October 2026
October 4
World Animal Day
Protection of animal rights and biodiversity.
October 5 (1st Monday)
World Habitat Day
Sustainable cities and settlements in harmony with nature.
October 10 (2nd Saturday)
World Migratory Bird Day
Protection of migratory birds and their migration routes.
October 14 (2nd Wednesday)
International Day for Disaster Risk Reduction
Preparation for natural disasters in the context of climate change.
October 16
World Food Day
Sustainable food systems and fighting hunger.
November 2026
November 10
World Science Day for Peace and Development
The role of science in sustainable development and ecology.
November 20
World Children's Day
Environmental education and children's rights to a clean planet.
December 2026
December 5
World Soil Day
Conservation of soil resources for food security.
December 11
International Mountain Day
Protection of mountain ecosystems and sustainable development in mountainous regions.
International Mother Earth Day
22 April
22 April
Mother Earth is clearly urging a call to action. Nature is suffering. Oceans filling with plastic and turning more acidic. Extreme heat, wildfires and floods, have affected millions of people.
SEE MORE World Water Day
22 March
22 March
Protecting frozen water resources for the future
The theme of World Water Day 2025 is ‘Glacier Preservation’
SEE MORE The theme of World Water Day 2025 is ‘Glacier Preservation’
World Wildlife Day
3 March
3 March
Organize your own event or share your commitment to wildlife on social media.
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