Ecological Calendar
ONE HERITAGE™

26 January: International Day of Clean Energy (A/RES/77/327)
Promotes sustainable energy use, reduced carbon footprint, and ecosystem protection.

2 February: World Wetlands Day (A/RES/75/317)
Highlights the importance of wetlands, rivers, and estuaries for biodiversity and water purification.

19 February: International Marine Mammal Protection Day
Advocates for the protection of whales, dolphins, seals, and other marine mammals.

Third Sunday of February: World Whale Day
Dedicated to honoring and conserving whale populations.

1 March: World Seagrass Day (A/RES/76/265)
Recognizes the role of seagrass meadows in carbon storage and coastal protection.

3 March: World Wildlife Day (A/RES/68/205)
Focuses on the conservation of terrestrial and marine wildlife.

21 March: International Day of Forests (A/RES/67/200)
Celebrates forests as pillars of biodiversity and climate resilience.

22 March: World Water Day (A/RES/47/193)
Dedicated to sustainable freshwater management and protection of frozen water resources — from glaciers to mountain streams feeding the oceans.

30 March: International Day of Zero Waste (A/RES/77/161)
Encourages waste reduction and prevention of ecosystem pollution.

22 April: International Mother Earth Day (A/RES/63/278)
Calls for harmony with nature and adoption of sustainable practices.

2 May: World Tuna Day (A/RES/71/124)
Raises awareness of sustainable tuna fishing and healthy oceans.

10 May: World Migratory Bird Day [UNEP]
Emphasizes the importance of coastal and marine habitats for migratory birds.

12 May: International Day of Plant Health (A/RES/76/256)
Highlights the role of plant ecosystems in environmental stability.

20 May: World Bee Day (A/RES/72/211)
Stresses the importance of pollinators in maintaining ecosystem health.

22 May: International Day for Biological Diversity (A/RES/55/201)
Promotes the protection of species on land and in the sea.

5 June: World Environment Day (A/RES/2994 (XXVII))
Encourages global action to protect nature.

5 June: International Day for the Fight Against IUU Fishing (A/RES/72/72)
Supports fair and sustainable fishing practices.

8 June: World Oceans Day (A/RES/63/111)
Calls for the protection of marine resources and biodiversity.

17 June: World Day to Combat Desertification and Drought (A/RES/49/115)
Focuses on land degradation and its effects on coastal ecosystems and water cycles.

23 July: World Whale and Dolphin Day
Observed by environmental organizations to promote marine mammal conservation.

27 August: World Lakes Day (A/RES/79/142)
Aims to protect freshwater and coastal water bodies.

7 September: International Day of Clean Air (A/RES/74/212)
Addresses air pollution impacting ecosystem health.

16 September: International Day for the Preservation of the Ozone Layer (A/RES/49/114)
Highlights ozone protection’s role in safeguarding life.

4 October: World Animal Day
Promotes compassionate treatment of animals — from elephants to sea lions.

23 October: International Snow Leopard Day (A/RES/79/143)
Highlights the importance of protecting mountain and watershed ecosystems.

6 November: International Day for Preventing the Exploitation of the Environment in War and Armed Conflict (A/RES/56/4)
Focuses on safeguarding ecosystems from war-related damage.

5 December: World Soil Day (A/RES/68/232)
Promotes sustainable land use and soil fertility.

11 December: International Mountain Day (A/RES/57/245)
Aims to protect mountain landscapes and water sources.