International Migrants Day
International Migrants Day is celebrated annually on 18 December to shine a spotlight on the contributions of migrants around the world and to highlight the increasingly complex environment in which migration occurs.
World Economic Forum Annual Meeting
The World Economic Forum (WEF) Annual Meeting 2026 will consider key global and regional challenges, including stimulating growth to improve living standards, responding to geopolitical shocks, and stewarding a just, inclusive energy transition.
International Day of Clean Energy
The International Day of Clean Energy on 26 January was declared by the General Assembly (resolution A/77/327) as a call to raise awareness and mobilize action for a just and inclusive transition to clean energy for the benefit of people and the planet.
ECOSOC Partnership Forum
The 2026 Partnership Forum of the Economic and Social Council (ECOSOC) will take place on 27 January 2026 at the UN Headquarters in New York under the theme “Transformative, equitable, innovative and coordinated actions for the 2030 Agenda and its SDGs for a sustainable future for all”.
World Wetlands Day
On 30 August 2021, the UN General Assembly proclaimed 2 February as World Wetlands Day to raise awareness of the urgency of reversing the accelerating loss of wetlands and to promote their conservation and restoration.
The day marks the date of the adoption of the "Convention on Wetlands of International Importance" held in 1971 in the Iranian city of Ramsar on the shores of the Caspian Sea.
World Governments Summit
In 2026, the World Governments Summit will convene under the theme 'Shaping Future Governments.' This Summit will bring together governments, international organizations, thought leaders, and private sector leaders from around the globe to foster international cooperation and identify innovative solutions for future challenges, ultimately inspiring and empowering the next generation of governments.
World Day of Social Justice
Strengthening a just transition for a sustainable future means making sure our move toward low-carbon economies benefits everyone, especially the most vulnerable. It requires a holistic approach that weaves environmental sustainability with social justice, ensuring that workers, indigenous peoples, and marginalized communities receive the support they need through retraining, job creation, and strong social protection measures.
Asia-Pacific Forum on Sustainable Development
The Asia-Pacific Forum on Sustainable Development (APFSD) is an annual, inclusive intergovernmental forum to support follow-up and review of progress on the 2030 Agenda for Sustainable Development and the Sustainable Development Goals (SDGs) at the regional level.
This regional platform aims to inform, empower, and support Asia-Pacific countries (especially least developed countries, landlocked developing countries and small island…
International Women's Day
International Women’s Day is celebrated annually on 8 March. It offers an opportunity to reflect on progress made, to call for change, and to celebrate acts of courage and determination by ordinary women who have played an extraordinary role in the history of their countries and communities.
World Water Day
World Water Day celebrates water and inspires action to tackle the global water crisis. A core focus of World Water Day is to support the achievement of Sustainable Development Goal (SDG) 6: water and sanitation for all by 2030.
World Sustainable Development Summit
The World Sustainable Development Summit (WSDS) is the annual flagship multistakeholder convening organized by The Energy and Resources Institute (TERI). Instituted in 2001, the Summit series has a legacy of over two decades in making ‘sustainable development’ a globally shared goal. Over the years, the Summit platform has brought together thought leaders, heads of state and government, scholars, corporates, youth groups, and civil society…
International Day of Zero Waste
The International Day of Zero Waste, observed annually on 30 March, highlights both the importance of bolstering waste management globally and the need to promote sustainable consumption and production patterns.
Economic and Social Council (ECOSOC) Youth Forum
The Forum provides a platform for young people to engage in a dialogue with Member States and other actors to voice their views, concerns, and galvanize actions on how to transform the world into a fairer, greener, and more sustainable place guided by the Sustainable Development Goals (SDGs).
International Mother Earth Day
International Mother Earth Day aims to raise global public awareness of the challenges to the well-being of the planet and all the life it supports. The Day also recognizes a collective responsibility, as called for in the 1992 Rio Declaration, to promote harmony with nature and the Earth, to achieve a just balance among the economic, social, and environmental needs of the present and future generations of humanity.
World Urban Forum (WUF13)
WUF was established in 2001 by the United Nations to examine one of the most pressing issues facing the world today: rapid urbanization and its impact on communities, cities, economies, climate change and policies. The first WUF was held in Nairobi, Kenya in 2002 and has been held around the world ever since.
Representatives of national, regional and local governments, academics, business people, community leaders, urban planners and…
UN Environment Assembly (UNEA-7)
The seventh meeting of the UN Environment Assembly (UNEA-7) will take place from 8-12 December 2025 at the UN Environment Programme (UNEP) Headquarters in Nairobi, Kenya. The meeting’s theme is theme, ‘Advancing Sustainable Solutions for a Resilient Planet’.
World AIDS Day
On 1 December WHO joins partners and communities to commemorate World AIDS Day 2025, under the theme "Overcoming disruption, transforming the AIDS response", calling for sustained political leadership, international cooperation, and human-rights-centred approaches to end AIDS by 2030.
World Sustainable Transport Day
World Sustainable Transport Day is celebrated annually on 26 November. The UN General Assembly (UNGA) declared the Day in recognition of the important role of safe, affordable, accessible, and sustainable transport systems for all in supporting sustainable economic growth, improving the social welfare of people, and enhancing international cooperation and trade among countries.
World Toilet Day
World Toilet Day is celebrated annually on 19 November to inspire action to tackle the global sanitation crisis and help achieve SDG 6, which promises sanitation for all by 2030. To meet the SDG sanitation target, the world needs to work on average, five times faster.
UN Climate Change Conference (UNFCCC COP 30)
The 2025 UN Climate Change Conference (UNFCCC COP 30) will convene in November 2025 in Belém, Brazil.
World Tsunami Awareness Day
In December 2015, the UN General Assembly designated 5 November as World Tsunami Awareness Day.
In 2021, World Tsunami Awareness Day will promote target (f) of the "Sendai Seven Campaign" which aims to “Substantially enhance international cooperation to developing countries through adequate and sustainable support to complement their national actions for implementation of the present Framework by 2030.”
Second World Summit for Social Development
The World Social Summit 2025, officially titled the Second World Summit for Social Development (WSSD2), is a significant global event aimed at fostering inclusive social development and addressing key challenges to achieve well-being for all. It serves as a platform for governments, civil society organizations, private sector actors, and other stakeholders to collaborate on creating policies and strategies that promote…
World Cities Day
World Cities Day brings Urban October to an end on 31 October each year and was first celebrated in 2014. As with World Habitat Day, a global observance is held in a different city each year and the day focuses on a specific theme.
6th Global WOPs Congress
The Global Water Operators’ Partnerships (WOPs) Congress is organized by UN-Habitat through the Global Water Operators’ Partnerships Alliance (GWOPA).
The Congress is the foremost gathering within the UN system for water and sanitation operators. It brings together operators, local and national governments, development partners, and stakeholders to exchange knowledge, inspire action, mobilise support for WOPs, and strengthen capacities…
The Open-ended Intergovernmental Expert Working Group on Adequate Housing for All
The Open-ended Intergovernmental Expert Working Group on Adequate Housing for All of the United Nations Human Settlements Programme will hold its second session (OEWG-H2) from 22 to 23 October 2025. The session will be held at the UN-Habitat Headquarters in Nairobi, Kenya.
World Food Day
World Food Day promotes awareness of hunger and action for the future of food, people, and the planet. The Day aims to raise awareness on the importance of ensuring a world where everyone has access to diverse, nutritious, affordable, and safe foods.
The Food and Agriculture Organization of the UN (FAO) designated 16 October as World Food Day in 1979. The Day takes place annually on 16 October.
First International Green Cities Conference
The First International Green Cities Conference will bring together mayors, ministers, city leaders, UN agencies, civil society, private sector actors, and financial institutions to celebrate achievements, exchange knowledge, foster partnerships, and mobilize resources for the adoption of integrated urban solutions. The conference will also mark two important milestones. It will present the FAO Green Cities Criteria, a set of conditions that…
World Migratory Bird Day
World Migratory Bird Day 2025 will focus on the theme, ‘Creating Bird-friendly Cities and Communities’. The theme highlights the need for a healthy coexistence between birds and humans and the opportunities to create and adapt environments that support migratory bird populations across all communities, from cities to smaller towns and communities.
5th meeting of the UN Forum of Mayors
The 5th meeting of the UN Forum of Mayors, “Cities Shaping the Future”, will be held in-person at the Palais des Nations, in Geneva, on 6-7 October 2025. Mayors from around the world will come together to exchange good practice and to collaboratively draft a set of recommendations, emphasizing the critical role of cities and local actors in shaping a sustainable future.
World Architecture Day
Created by the UIA in 1985, World Architecture Day is celebrated annually on the first Monday of October coinciding with the UN-Habitat Global Observance of the World Habitat Day.