International Day events

The International Day of Zero Waste aims to promote sustainable consumption and production patterns, support the societal shift towards circularity and raise awareness about how zero-waste initiatives contribute to the advancement of the 2030 Agenda for Sustainable Development.

The waste sector contributes significantly to the triple planetary crisis of climate change, biodiversity and nature loss, and pollution. Humanity generates an estimated 2.24 billion tons of municipal solid waste annually, of which only 55 per cent is managed in controlled facilities. Every year, around 931 million tons of food is lost or wasted and up to 14 million tons of plastic waste enters aquatic ecosystems.

Zero-waste initiatives can foster sound waste management and minimize and prevent waste, helping to address the triple planetary crisis, protect the environment, enhance food security and improve human health and well-being.

Every 23 March, the World Meteorological Organization commemorates the coming into force of the Convention establishing the World Meteorological Organization on 23 March 1950.

It showcases the essential contribution of National Meteorological and Hydrological Services to the safety and wellbeing of society and is celebrated with activities around the world. The themes chosen for World Meteorological Day reflect topical weather, climate or water-related issues.

World Water Day, held on 22 March every year since 1993, is an annual United Nations Observance focusing on the importance of freshwater.

World Water Day celebrates water and raises awareness of the 2.2 billion people living without access to safe water. It is about taking action to tackle the global water crisis. A core focus of World Water Day is to support the achievement of Sustainable Development Goal 6: water and sanitation for all by 2030.

Every year, UN-Water — the UN’s coordination mechanism on water and sanitation — sets the theme for World Water Day. In 2023, the focus was on Accelerating Change.

The United Nations General Assembly proclaimed 21 March the International Day of Forests (IDF) in 2012. The Day celebrates and raises awareness of the importance of all types of forests. On each International Day of Forests, countries are encouraged to undertake local, national and international efforts to organize activities involving forests and trees, such as tree planting campaigns. The theme for each International Day of Forests is chosen by the Collaborative Partnership on Forests.

On 20 December 2013 at the 68th Session of the United Nations General Assembly (UNGA), March 3 was declared United Nations World Wildlife Day (WWD). This day holds significance as the day that the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was signed in 1973. The UNGA Resolution designated the CITES Secretariat as the facilitator for the global observance of this special day for wildlife on the UN calendar. UN World Wildlife Day has now become the global annual event dedicated to wildlife.

People everywhere rely on wildlife and biodiversity-based resources to meet our needs – from food, to fuel, medicines, housing, and clothing. For us to enjoy the benefits and the beauty that nature brings us and our planet, people have been working together to make sure ecosystems are able to thrive and plant and animal species are able to exist for future generations. So, let’s celebrate wildlife and the important conservation work being done around the world!

World Wetlands Day is celebrated each year on 2 February to raise awareness about wetlands. This day also marks the anniversary of the Convention on Wetlands, which was adopted as an international treaty in 1971.