International Day For The Preservation Of The Ozone Layer
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International Day for the Preservation of the Ozone Layer (informally and simply called Ozone Day) is celebrated on
September 16 Events Pre-1600 * 681 – Pope Honorius I is posthumously excommunicated by the Sixth Ecumenical Council. *1400 – Owain Glyndŵr is declared Prince of Wales by his followers. 1601–1900 * 1620 – A determined band of 35 relig ...
designed by the
United Nations General Assembly The United Nations General Assembly (UNGA or GA; french: link=no, Assemblée générale, AG) is one of the six principal organs of the United Nations (UN), serving as the main deliberative, policymaking, and representative organ of the UN. Curr ...
. This designation had been made on December 19, 2000, in commemoration of the date, in 1987, on which nations signed the
Montreal Protocol The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion Ozone depletion consists of two related events observed sinc ...
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 Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone l ...
their chemical effects are expected to continue for between 50 and 100 years.


See also

*
List of environmental dates This is a List of environmental dates. These dates are designated for creating awareness of environmental issues. Species awareness days highlight biodiversity with the aim of increasing awareness about them. Some of these have been shown to lea ...
*
Scientific Assessment of Ozone Depletion The Scientific Assessment of Ozone Depletion is a sequence of reports sponsored by WMO/UNEP. The most recent report is from 2018. The reports were set up to inform the Montreal Protocol and amendments about ozone depletion. Background The Mont ...


References


External links


UN - International Day for the Preservation of the Ozone Layer
{{Human impact on the environment
Ozone Ozone (), or trioxygen, is an inorganic molecule with the chemical formula . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope , breaking down in the lo ...
United Nations days September observances Recurring events established in 1994 Ozone depletion