Environmental Calendar
One Heritage™ — Key Dates of the International Environmental Movement
International Environmental Information Campaign "ONE HERITAGE"
Upcoming dates
Current update:
June 2026
June 2026
- 05 JunWorld Environment Day
- 05 JunInternational Day for the Fight against Illegal, Unreported and Unregulated Fishing
- 08 JunWorld Oceans Day
- 17 JunWorld Day to Combat Desertification and Drought
- 18 JunSustainable Gastronomy Day
- 12 JulInternational Day of Combating Sand and Dust Storms
- 27 AugWorld Lake Day
International Environmental Calendar 2026
List of International Days and Weeks
- 02 Feb - World Wetlands Day
- 10 Feb - International Day of the Arabian Leopard
- 01 Mar - World Seagrass Day
- 03 Mar - World Wildlife Day
- 20 Mar - World Sparrow Day [Note: Not in UN list but commonly observed; if strictly from UN list, skip]
- 21 Mar - International Day of Forests
- 21 Mar - World Day for Glaciers
- 22 Mar - World Water Day
- 23 Mar - World Meteorological Day
- 30 Mar - International Day of Zero Waste
- 22 Apr - International Mother Earth Day
- 02 May - World Tuna Day
- 10 May - World Migratory Bird Day [May]
- 10 May - International Day of Argania
- 12 May - International Day of Plant Health
- 20 May - World Bee Day
- 22 May - International Day for Biological Diversity
- 24 May - International Day of the Markhor
- 05 Jun - World Environment Day
- 05 Jun - International Day for the Fight against Illegal, Unreported and Unregulated Fishing
- 08 Jun - World Oceans Day
- 17 Jun - World Day to Combat Desertification and Drought
- 18 Jun - Sustainable Gastronomy Day
- 12 Jul - International Day of Combating Sand and Dust Storms
- 27 Aug - World Lake Day
- 07 Sep - International Day of Clean Air for Blue Skies
- 16 Sep - International Day for the Preservation of the Ozone Layer
- 20 Sep - World Cleanup Day
- 29 Sep - International Day of Awareness of Food Loss and Waste
- 07 Oct - World Cotton Day
- 11 Oct - International Day for Disaster Risk Reduction [environmental aspect]
- 23 Oct - International Day of the Snow Leopard
- 05 Nov - World Tsunami Awareness Day
- 06 Nov - International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
- 05 Dec - World Soil Day
- 11 Dec - International Mountain Day
ONE HERITAGE™
About International Days & Environmental Initiatives
Why do we mark International Days?
International days and weeks are occasions to educate the public on issues of concern, to mobilize political will and resources to address global problems, and to celebrate and reinforce achievements of humanity.
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