International Day for the Preservation of the Ozone Layer

September 16, Monday

September 16 was designated by the United Nations General Assembly as the International Day for the Preservation of the Ozone Layer.
This designation had been made on December 19, 2000, in commemoration of the date, in 1987, on which nations signed the Montreal Protocol on Substances that Deplete the Ozone Layer. In 1994, the UN General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer. The closure of the hole in the ozone layer was observed 30 years after the protocol was signed. Due to the nature of the gases responsible for ozone depletion their chemical effects are expected to continue for between 50 and 100 years.

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International Day for the Preservation of the Ozone Layer in other years

2021 September 16, Thursday
2022 September 16, Friday
2023 September 16, Saturday
2025 September 16, Tuesday

International Day for the Preservation of the Ozone Layer in other countries