16 September: International Day for the Preservation of the Ozone Layer

16 September: International Day for the Preservation of the Ozone Layer.

Layer is observed every year on September 16 for the preservation of the Ozone Layer. Significance of the Day: The day is commemoration of the date in 1987 on which the Montreal Protocol was signed on substances that deplete the ozone layer. 2016 theme: “Ozone and climate: Restored by a world united”. The theme recognizes the collective efforts of the parties to the Montreal Protocol and Vienna Convention towards the restoration of the ozone layer over the past three decades and the global commitment to combat climate change.