International Day for the Preservation of the Ozone Layer 2026

Wednesday, 16 September 2026

Marks the signing of the Montreal Protocol and promotes protection of the ozone layer.

Also known as

World Ozone Day

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Frequently asked questions

When is International Day for the Preservation of the Ozone Layer 2026?: International Day for the Preservation of the Ozone Layer 2026 is on Wednesday, 16 September 2026.
What day of the week is International Day for the Preservation of the Ozone Layer 2026?: It falls on Wednesday.
How is International Day for the Preservation of the Ozone Layer calculated?: This event is observed every year on 16 September.