Anniversary Collection
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Events
- First World Day of Prayer for the Care of Creation
- First World Ranger Day
- 20 May: European Maritime Day set up by European institutions
- 20th International Bat Night
- 20th International Bat Night
- 21st May is European Natura 2000 day
- 30 years of the Blue Angel, 30 years of innovation
- 30 years of the Blue Angel, 30 years of innovation
- A nationwide day for sustainable (dish) washing
- A nationwide day for sustainable (dish) washing
- Arbor Day
- Leading elephant conservationist shot dead in Tanzania
- Day of the Convention on International Trade in Endangered Species of Wild Fauna and Flora
- Day of the Geotope
- 20 May: European Maritime Day set up by European institutions
- The First International Ragweed Day
- First European Solar Days
- Earth Day
- Elinor Ostrom, winner of Nobel in Economics, dies
- First European Climate Teach-in Day
- First European Agro-Biodiversity Day
- First Global Wind Day
- First Danube Day
- First International Day of the Baltic Harbour Porpoise
- First International Day for the Conservation of the Mangrove Ecosystem
- First Park(ing) Day
- First Save the Frog Day
- Erster Tag der Alleen
- First Noise Awareness Day
- First Wangari Maathai Day Celebrated in Conjunction with Africa Environment Day
- First Worl-Elephant-Day
- First World Cities Day
- European Day of Parks
- European Day of Parks
- First Danube Day
- First European Agro-Biodiversity Day
- First European Climate Teach-in Day
- First European Solar Days
- First Global Wind Day
- First International Day for the Conservation of the Mangrove Ecosystem
- First International Day of the Baltic Harbour Porpoise
- First Noise Awareness Day
- First Park(ing) Day
- First Save the Frog Day
- First Wangari Maathai Day Celebrated in Conjunction with Africa Environment Day
- First Worl-Elephant-Day
- First World Cities Day
- First World Day of Prayer for the Care of Creation
- First World Ranger Day
- Green belt Germany becomes national heritage of nature
- Green belt Germany becomes national heritage of nature
- International Bag Free Day
- International Coastal Cleanup Day
- International Day for Biological Diversity
- International Day for Natural Disaster Reduction
- International Day for Preservation of the Ozone Layer
- International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
- International Mountain Day
- International Polar Bear Day
- International Mountain Day
- International Day for Biological Diversity
- Earth Day
- World Environment Day
- International Bag Free Day
- World Day for Animals in Laboratories
- World Forestry Day
- International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
- International Day for Preservation of the Ozone Layer
- International Day for Natural Disaster Reduction
- Leading elephant conservationist shot dead in Tanzania
- 21st May is European Natura 2000 day
- Sun Day (UNEP)
- World Ocean Day
- Sun Day (UNEP)
- Tropical Forest Day
- Tag der ökologisch-sozialen Marktwirtschaft
- Day of the Convention on International Trade in Endangered Species of Wild Fauna and Flora
- Arbor Day
- World Soil Day
- Day of the Geotope
- The First International Ragweed Day
- Tony de Brum dies
- Tony de Brum dies
- Tropical Forest Day
- Elinor Ostrom, winner of Nobel in Economics, dies
- UN World Habitat Day
- UN World Habitat Day
- World Turtle Day
- International Polar Bear Day
- World Penguin Day
- World Meteorological Day
- World Day to Combat Desertification
- World fish migration day
- World Animal Day
- World Toilet Day
- World Vegetarian Day
- World Consumer Rights Day
- World Day of Water or World Water Day
- International Coastal Cleanup Day
- World Migratory Bird Day
- World Animal Day
- World Consumer Rights Day
- World Day for Animals in Laboratories
- World Day of Water or World Water Day
- World Day to Combat Desertification
- World Environment Day
- World fish migration day
- World Forestry Day
- World Meteorological Day
- World Migratory Bird Day
- World Ocean Day
- World Penguin Day
- World Soil Day
- World Toilet Day
- World Turtle Day
- World Vegetarian Day
- World Wildlife Day
- World Wildlife Day
