The mandate agreed in Tangier runs until 2029. The global agenda it must help deliver runs until 2030. That single year between them shapes everything that follows.
The UCLG Calendar
The movement’s own diary now runs on a three-year rhythm, and the new mandate’s first full year is 2027.
The UCLG Annual Retreat returns to Barcelona in February 2027, the week in which the network turns the Tangier Outcome Document into a work plan. It is the first test of the mechanisms agreed at the Tangier Congress: the Housing Justice Academy, the Women’s Council for Equality, the Intergenerational Council, the Board on Decentralised Cooperation, and the Global Facility for Innovation in Local Public Services, all of which arrive in Barcelona needing budgets, governance, and a first year of work.
The Executive Bureau will meet in Niterói in spring 2027, while the World Council convenes in Johannesburg, Gauteng, that October alongside the VII World Forum on Local Economic Development.
Culture returns to the centre in 2027, when Jeonju, in the Republic of Korea, hosts the 7th UCLG Culture Summit, following Bilbao, Jeju, Buenos Aires, Izmir, Barcelona and Dublin. The timing is not incidental. In Tangier, the session on the proposed standalone Culture Goal set itself the task of demonstrating, before the 2027 SDG Summit and the post-2030 negotiations, that culture is not only valuable but “goalable”: capable of carrying targets, indicators and local implementation pathways. Jeonju is where that argument has to be won. By then, the Culture 21 Award will have honored its 2026 winners, Ramallah and São Paulo, in Mexico City on 7 and 8 October 2026.
Participatory democracy will also feature prominently on the movement’s calendar. From 21 to 23 September 2026, Kraków will host the International Observatory on Participatory Democracy (OIDP) Conference.
The United Nations Changes Hands
The most consequential date on the horizon is not a summit. On 1 January 2027, a new United Nations Secretary-General takes office, ending António Guterres’s decade in the post. Seven candidates remain in the field — Michelle Bachelet, María Fernanda Espinosa, Rafael Grossi, Rebeca Grynspan, Macky Sall, Carolyn Rodrigues Birkett and Olara Otunnu, who joined the race at the last minute. Four of them are women. In eighty years, no woman has held the position. After a series of public dialogues with candidates, including the first UN Town Hall in July, the process now moves into the Security Council’s private deliberations. A recommendation is expected before the end of the year.
Whoever emerges inherits the UN80 reform initiative and the opening of negotiations on a post-2030 development agenda. For a movement that spent the Tangier week arguing that local and regional governments are political actors rather than implementers, the identity of the next Secretary-General is not a spectator question. It determines who is listening.
Delivery Time
Then comes the accounting. The SDG Summit convenes in New York in September 2027 — the third since 2019, the last before the deadline, and the one at which Heads of State negotiate a political declaration against the evidence of the Global Sustainable Development Report 2027, published days earlier.
The same year brings the IPCC Special Report on Climate Change and Cities: the first report the panel has devoted to a place-based scale, and the first to seat municipal practitioners alongside researchers as authors. It exists because the urban community asked for it. It will now measure how that community uses it.
UNFCCC COP32 goes to Addis Ababa in 2027 under the African Group’s presidency, following the Mediterranean debate opened in Antalya this November 2026. COP33, in 2028, still has no host: India withdrew its bid in April 2026, leaving the Asia-Pacific Group to renominate. The same year delivers the second Global Stocktake under the Paris Agreement.
Following the 2026 UN Ocean Conference in Nice, attention now turns to the UN Water Conference in Abu Dhabi in December, where governments and stakeholders will seek to accelerate action on water security, sanitation and resilience as discussions on the agenda beyond 2030 gather pace.
Also in 2027, the UN-Habitat Assembly, the highest global decision-making body on sustainable urbanisation, holds its third session in Nairobi. And in 2030, SDG 11 falls due. The New Urban Agenda, by contrast, runs to 2036 — the only global urban framework that outlives the deadline.
In 2028, the international community will mark the 80th anniversary of the Universal Declaration of Human Rights, while preparations for the 72nd session of the Commission on the Status of Women (CSW72) will continue to advance the global care agenda, including the collective efforts of the Global Alliance for Care and reinforcing care as a human rights and gender equality priority.
Where Cities Gather
The municipal calendar moves west. World Urban Forum 14 convenes in Mexico City in 2028 — coming back to Latin America after Medellín in 2014 and Habitat III in Quito. Bids for WUF15 in 2030 close on 30 November 2026, with the handover at WUF14. The ICLEI World Congress returns in 2027 on its triennial cycle, and Metropolis enters its 2027–2029 strategic period, with its Board of Directors elected in Tangier on the final morning.
Two world expos open in 2027, weeks apart. GREEN×EXPO 2027 runs in Yokohama from 19 March to 26 September, under the theme “Scenery of the Future for Happiness”. It’s a hundred-hectare horticultural exposition built on a returned military communications base and explicitly framed as a model for society beyond 2030. Expo 2027 Belgrade runs from 15 May to 15 August, the first world exposition held in the Western Balkans, themed “Play for Humanity”. The World Expo then travels to Riyadh, from 1 October 2030 to 31 March 2031, straddling the SDG deadline.
Cities also host the world’s largest events. The Summer Olympics return to Los Angeles in July 2028; the Winter Games go to the French Alps in February 2030, spread across Haute-Savoie, Savoie, Briançon and Nice, with roughly nine in ten venues existing or temporary. Both are, in the end, exercises in municipal delivery.
Key Dates Ahead
8-22 September 2026
UN General Assembly
New York City
19-21 September 2026
Urban 20
New York City
1-31 October 2026
Urban October
5 October 2026
World Habitat Day
7-8 October 2026
UCLG Culture 21 Award Ceremony
Mexico City
29 October 2026
International Day of Care and Support
31 October 2026
World Cities Day
9-20 November 2026
COP31
Antalya
8-10 December 2026
UN Water Conference
Abu Dhabi
February 2027
UCLG Retreat
Barcelona
Join the conversation
The High-Level Political Forum has concluded in New York and the 100 Days of Multilateralism have come to an end. But the debate that began has not ended.
Over the course of these 100 days, cities and regions have raised questions that no single forum can resolve on its own—and that do not end when the agenda concludes.
The Urban Journalism Institute, and the Municipal Times with it, will continue to be there to keep reporting on these issues.