International Day for the Preservation of the Ozone Layer
A global day commemorating the signing of the Montreal Protocol, celebrating one of the most successful international environmental efforts.
Date16 September
TopicEnvironment & Sustainability
Established1994
Ways to observe this day
- Learn the success story of the Montreal Protocol
- Avoid products containing ozone-depleting substances
- Share awareness about the importance of the ozone layer
- Support local environmental policies that protect the atmosphere
On December 19, 1994, the UN General Assembly proclaimed September 16 as the International Day for the Preservation of the Ozone Layer, commemorating the 1987 signing of the Montreal Protocol on Substances that Deplete the Ozone Layer. The day was first observed on September 16, 1995.
In 1987, representatives from 24 countries met in Montreal and signed the protocol, committing to phase out chemicals that deplete the ozone layer, which shields the Earth from harmful ultraviolet radiation. The Montreal Protocol is widely regarded as one of the most successful international environmental agreements ever, having achieved universal ratification by UN member states.
The day is marked worldwide through events highlighting the ozone layer's gradual recovery and the importance of sustained international commitment to protecting the atmosphere, serving as a model for successful global environmental cooperation.
