International Day for the Preservation of the Ozone Layer is celebrated on September 16 designed by the United Nations General Assembly. 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.
International Day for the Preservation of the Ozone Layer
On September 16, in the year 0, International Day for the Preservation of the Ozone Layer. This event is recorded as a Holidays event in the history of September 16, one of 484 recorded events on this date across all of history.
Key Facts
- This event took place on September 16, 0 (AD era).
- It is categorised as a Holidays event in recorded history.
- Referenced in 1 Wikipedia article.
- Wikipedia source last updated on 10 May 2026.
On This Date in History 484
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