Awareness Environment
International Day for the Preservation of the Ozone Layer
On 16 September the UN celebrates efforts to protect the ozone layer, which shields the Earth from harmful solar radiation.
- UK
- USA
- Ireland (not marked)
- Canada (not marked)
- Australia (not marked)
- New Zealand (not marked)
- International
OrganiserUN Environment Programme (UNEP)
ListingAdded by us from official sources
Last checked19 October 2026
First held1994
About the day
The UN General Assembly proclaimed the day in 1994. The date marks the signing of the Montreal Protocol in 1987, which controls substances that damage the ozone layer.
2026 theme
Global action for a cooler planet
The 2027 theme has not been announced yet.
Dates for the next three years
| Year | Date | Where | Status |
|---|---|---|---|
| 2027 | Thursday 16 September 2027 | UK, USA, International | Same date every year |
| 2028 | Saturday 16 September 2028 | UK, USA, International | Same date every year |
| 2029 | Sunday 16 September 2029 | UK, USA, International | Same date every year |
Where this information comes from
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