Official
International Day for Small Island Developing States 2026
International Day for Small Island Developing States falls on April 25, 2026.
25 April 2026
About this observance
An official international observance listed by UNESCO and marked on April 25.
Frequently Asked Questions
International Day for Small Island Developing States is listed for April 25, 2026 in 2026.
The current source label for this entry is UNESCO.