International Youth Day
International Youth Day is celebrated annually on 12 August to bring youth issues to the attention of the international community and celebrate the potential of youth as partners in today’s global society.
The Day gives an opportunity to celebrate and mainstream young peoples’ voices, actions, and initiatives, as well as their meaningful, universal, and equitable engagement. The UN General Assembly (UNGA) established the Day on 17…
World Humanitarian Day
World Humanitarian Day is commemorated every year on 19 August to pay tribute to humanitarian workers killed and injured in the course of their work, and to honor all aid and health workers who continue to provide life-saving support and protection to people most in need. The Day highlights the importance, effectiveness, and positive impact of humanitarian work.
13th International Conference on Sustainable Development
The 13th International Conference on Sustainable Development (ICSD) will be held on the theme, ‘Creating a Unified Foundation for Sustainable Development: Research, Practice, and Education’. The Conference aims to bring together individuals from research, policy, practice, and business to share ideas, present research fundings, and discuss professional issues relevant to sustainability science.
European Mobility Week
European Mobility Week is the European Commission’s flagship awareness-raising campaign on sustainable urban mobility. It promotes behavioural change in favor of active mobility, public transport, and other clean, intelligent transport solutions.
The main event takes place from 16 to 22 September each year, culminating in the popular Car-Free Day. Local authorities are encouraged to use this week to test innovative planning measures,…
World Cleanup Day
On 8 December 2023, the United Nations General Assembly, in its seventy-eighth session, unanimously adopted resolution 78/122 “World Cleanup Day”, which proclaims 20 September as World Cleanup Day.
The resolution invites all Member States, organizations of the United Nations system, other international and regional organizations, and other relevant stakeholders – including civil society, the private sector and academia – to observe…
World Maritime Day
The World Maritime Day theme for 2025 "Our Ocean, Our Obligation, Our Opportunity" reflects the ocean’s vital role in the world economy, with more than 80% of global trade transported by sea. The ocean is a source of jobs and food for millions of people, a home for countless marine species, and a regulator of the planet's climate, mitigating the impacts of climate change.
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.
World Habitat Day
World Habitat Day is marked on the first Monday of October each year and is recognized by the United Nations to reflect on the state of towns and cities, and on the basic right of all to adequate shelter. The day is also intended to remind the world that everyone has the power and the responsibility to shape the future of towns and cities.
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 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.
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.
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.
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…
Second World Summit for Social Development
The Second World Summit for Social Development would address the gaps and recommit to the Copenhagen Declaration on Social Development and Programme of Action and its implementation and give momentum towards implementing the 2030 Agenda.
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.”
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 29)
The 2024 UN Climate Change Conference (UNFCCC COP 29) will convene from 11 to 22 November 2024 in Baku, Azerbaijan.
World Urban Forum (WUF12)
The Twelfth Session of the World Urban Forum (WUF12) will take place in Cairo, Egypt. This session is the first time the Forum will take place on the African continent since its inaugural session in 2002 in Nairobi, Kenya. WUF12 will focus on sustainable, inclusive, and resilient cities. The is co-organized by the UN Human Settlements Programme (UN-Habitat), with the Government of Egypt.
The UN established the WUF in 2001 to examine the…
World Cities Day
The theme of World Cities Day 2024 will be linked to Youth leading climate and local action for cities. Young people advocate for bolder steps and actions to tackle climate crisis in our cities. It will draw attention on how we can capture these bold ideas and ambitious targets and turn them into achievements.
World Cities Day brings Urban October to an end on 31 October each year and was first celebrated in 2014. As with World Habitat…
World Health Summit
The World Health Summit 2024 will bring together stakeholders from politics, science, the private sector, and civil society from around the world to set the agenda for a healthier future by inspiring innovative solutions for better health and well-being for all. The Summit aims to: improve health worldwide; find answers to health challenges, guided by science; and promote the global health debate in the spirit of the SDGs.
World Habitat Day
The Global Observance of World Habitat Day will be held in the City of Querétaro, Mexico on 7 October 2024.
World Habitat Day is marked on the first Monday of October each year and is recognized by the United Nations to reflect on the state of towns and cities, and on the basic right of all to adequate shelter. The day is also intended to remind the world that everyone has the power and the responsibility to shape the future of towns…
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.
Fourth Forum of Mayors
The Fourth Forum of Mayors’ meeting, "The Cities Summit of the Future", will be held in Geneva from 30 September to 1 October 2024.
Following up on the Pact of the Future to be agreed by the United Nations Summit of the Future (New York, 22-23 September 2024), Mayors around the world will convene to collaboratively draw up an outcome statement, emphasizing the crucial role of cities and local actors in leading the way towards a…
World Maritime Day
World Maritime Day is celebrated annually to provide an opportunity to focus attention on the importance of shipping and other maritime activities and to emphasize a particular aspect of the work of the International Maritime Organization (IMO).
International shipping transports over 80% of global trade to communities around the world, which emphasizes the importance of a safe, secure, and efficient international shipping industry in…
Climate Week NYC
Climate Week NYC 2024 will provide a platform for showcasing leading climate action and discussing how to do more.
The annual event is hosted by the Climate Group and New York City and takes place in conjunction with the UN General Assembly (UNGA). During the week, the Climate Group will host a main programme of in-person events, including an opening ceremony and The Hub Live.
Summit of the Future
The high-level event will bring together UN Member States, UN agencies, non-governmental organizations (NGOs), civil society organizations (CSOs), academic institutions, the private sector, and youth under the theme, ‘Summit of the Future: Multilateral Solutions for a Better Tomorrow’. The Summit aims to forge a new global consensus on what our future should look like, and what we can do today to secure it.
World Cleanup Day
World Cleanup Day is an annual global social action program aimed at combating the global mismanaged waste crisis, including the problem of marine debris.
12th International Conference on Sustainable Development
The 12th International Conference on Sustainable Development (ICSD) will be held on the theme, ‘Solutions for the Future’. The Conference aims to bring together individuals from research, policy, practice, and business in advance of the 2024 Summit of the Future to share practice solutions for achieving the SDGs at local and national levels.
Innovate4Cities Conference
To link cities, climate change science, and findings from the first Global Stocktake, the Global Covenant of Mayors for Climate and Energy (GCoM) and the United Nations Human Settlements Programme (UN-Habitat) have announced that the next Innovate4Cities Conference (I4C2024) is set to take place for the first time in Montreal, Canada from 10-12 September 2024.