The International Day for the Preservation of the Ozone Layer is observed globally on 16 September every year. The theme for 2017 is ‘Caring for all life under the sun’.
The Day commemorates the date of the signing of the ‘Montreal Protocol on Substances that Deplete the Ozone Layer’. This year marks the 30th anniversary of the Montreal Protocol. As part of the anniversary celebrations, the Ozone Secretariat launched a communication campaign #OzoneHeroes ahead of World Ozone Day.
Source- The United Nations