International Day for South-South Cooperation is observed every year on September 12. This United Nations observance highlights cooperation among developing countries and the role of shared knowledge, technical support, and solidarity in sustainable development.
The day focuses on partnerships across the Global South in areas such as education, health, agriculture, trade, climate action, technology, and poverty reduction. It reminds the international community that development is stronger when countries exchange practical experience and work together on common challenges.
History of International Day for South-South Cooperation
International Day for South-South Cooperation is connected to the Buenos Aires Plan of Action, adopted in 1978. This plan became an important framework for technical cooperation among developing countries and helped shape the modern idea of South-South cooperation.
The United Nations later established a dedicated observance to recognize this form of partnership. September 12 was chosen because it marks the adoption of the Buenos Aires Plan of Action. Today, the day is used by governments, United Nations agencies, development organizations, and civil society groups to discuss progress, share successful projects, and set new priorities.
Interesting Facts About International Day for South-South Cooperation
- International Day for South-South Cooperation is observed annually on September 12.
- South-South cooperation means collaboration among developing countries, especially across the Global South.
- The observance is linked to the Buenos Aires Plan of Action, adopted in 1978.
- Cooperation can include technical training, knowledge sharing, policy support, trade partnerships, and development projects.
- The United Nations Office for South-South Cooperation supports this work within the United Nations system.
How International Day for South-South Cooperation Is Observed
International Day for South-South Cooperation is observed through conferences, panel discussions, reports, educational programs, and events focused on development partnerships. These activities often highlight successful cooperation in health care, food security, education, climate resilience, digital development, and job creation.
Individuals can take part by learning more about the Global South and the role of cooperation in sustainable development. Supporting reputable organizations that work in education, health, climate protection, and poverty reduction is another practical way to connect with the purpose of the day.
When Is International Day for South-South Cooperation in 2026?
International Day for South-South Cooperation is observed on September 12 each year.
Observations
| Weekday | Month | Day | Year |
| Saturday | September | 12 | 2026 |
| Sunday | September | 12 | 2027 |
| Tuesday | September | 12 | 2028 |
| Wednesday | September | 12 | 2029 |


