World Bicycle Day, 3 June

https://www.un.org/en/observances/bicycle-day
Bicycling is an excellent activity for exercise regardless of duration. It can also provide good transportation for those unable to purchase or drive a vehicle, and does not cause air pollution or congestion. Safe and supported bicycle use is key for sustainable development and economic growth.
This Day follows the Sustainable Development Goals of 1 (No Poverty), 3 (Good Health and Well-Being), 9 (Industry, Innovation and Infrastructure), 10 (Reduced Inequalities), 11 (Sustainable Cities and Communities) and 13 (Climate Action).
World Environment Day, 5 June

Photo:Damian Patkowski/Unsplash
https://www.un.org/en/observances/environment-day
Climate change is a growing threat that must be faced for humanity to have any chance of survival.
This Day follows the Sustainable Development Goals of 13 (Climate Action), 14 (Life Below Water), 15 (Life on Land), and 17 (Partnerships for the Goals).
World Oceans Day, 8 June

Photo:Alex Rose/Unsplash
https://www.un.org/en/observances/oceans-day
Oceans cover over 70% of the earth, providing 50% of its oxygen, and supporting over 40 million people by 2030. Yet its fish and coral networks are under constant threat of destruction. This Day is to remind people to be more sustainable and cautious with this immense biome.
This Day follows the Sustainable Development Goals of 6 (Clean Water and Sanitation), 8 (Decent Work and Economic Growth), 9 (Industry, Innovation and Infrastructure), 11 (Sustainable Cities and Communities),12 (Responsible Consumption and Production), 13 (Climate Action), 14 (Life Below Water) and 17 (Partnerships for the Goals).
World Day to Combat Desertification and Drought, 17 June

With 40% of the land currently or under threat of degradation, care must be needed to safeguard the land that provides for all of humanity.
The World Day addresses the Sustainable Development Goals 11 (Sustainable Cities and Communities), 12 (Responsible Consumption and Production), 13 (Climate Action), and 15 (Life on Land).
Sustainable Gastronomy Day, 18 June

Local food and cuisine should be preserved and cultivated in a manner that does not harm or damage the surrounding environment. This includes the origin of ingredients, how they are gathered, and how it is delivered from one point to another.
The World Day addresses the Sustainable Development Goals 2 (Zero Hunger), 3 (Good Health and Well-Being), and 12 (Responsible Consumption and Production).


For 2025, the World Refuge Day is focused on solidarity, to work alongside and support those who need it the most, and finding solutions for their problems, including going back home safely if necessary.
The World Day addresses the Sustainable Development Goal 16 (Peace, Justice and Strong Institutions), and is overseen by the UN Refugee Agency (UNHCR).
International Day of the Tropics, 29 June

Photo:FAO/IPPC
With tropics covering over 40% of the surface and accounting for over 80% of biodiversity, including 95% of all mangroves, ensuring their protection and sustainability is vital. This is even more so for 2050, when they are to support over 2/3 of the world’s children.
The World Day addresses the Sustainable Development Goals 6 (Clean Water and Sanitation), 13 (Climate Action), 14 (Life Below Water) and 15 (Life on Land).



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