International Day for the Preservation of the Ozone Layer Date in the current year: September 16, 2017

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.

The ozone layer, also known as the ozone shield, is part of the stratosphere, the second major layer of Earth's atmosphere. It contains high concentration of trioxygen, commonly known as ozone. The ozone layer is responsible for absorbing most of the UV radiation emitted by the Sun. It protects life on Earth from potential damage caused by ultraviolet light.

Sadly, the ozone layer is depleted by various substances. The concentrations of some of these substances are increasing due to human activities. The issue of ozone depletion has become urgent, that is why the Montreal Protocol was created. This treaty aims to protect the ozone shield by reducing the use and production of ozone depleting substances.

International Day for the Preservation of the Ozone Layer was created to raise public awareness of ozone depletion and promote activities in accordance with the main objectives of the Montreal Protocol. Each year, the new theme for the celebration is announced.

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UN Observances

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International Day for the Preservation of the Ozone Layer, UN observances, ozone depletion