International Day for the Preservation of the Ozone Layer

Date

16th Sep 2025

Time

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International Day for the Preservation of the Ozone Layer

International Day for the Preservation of the Ozone Layer is an annual United Nations observance held on September 16. It was established in December 1994 to commemorate the signing of the Montreal Protocol on the Substances that Deplete the Ozone Layer that took place on September 16, 1987.