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World Ozone Day, officially the International Day for the Preservation of the Ozone Layer, was observed on 16 September 2026.
The 2026 theme is 'Global Action for a Cooler Planet - Celebrating 10 years of sustainable cooling under the Kigali Amendment to the Montreal Protocol'.
16 September marks the signing of the Montreal Protocol in 1987; the UN General Assembly proclaimed the day on 19 December 1994.
The Kigali Amendment (2016) added hydrofluorocarbons (HFCs) - which do not deplete ozone but are potent greenhouse gases - to the Montreal Protocol's controls.
India ratified the Kigali Amendment in 2021 and must freeze HFC consumption in 2028.
Framework for cooperation on research, monitoring and information exchange on the ozone layer; entered into force in 1988
Binding controls to phase out ozone-depleting substances such as CFCs, halons and HCFCs
Adds HFCs to the Protocol's controls; India, in the later group of developing countries, freezes consumption in 2028 and cuts it 85% below baseline by 2047
Cut cooling demand and refrigerant use while improving energy efficiency
Key: Launched in 2019 with a 20-year horizon; India was among the first countries to adopt such a plan
Commit India to the global HFC phase-down
Key: Ratified in September 2021 after Union Cabinet approval in August 2021
GS Paper III > Environment - international conventions, climate change
General Awareness > Important days, environment
Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?
Answer: Montreal Protocol
Hydrofluorocarbons - CFC substitutes that spare the ozone layer but are powerful greenhouse gases
Chemicals such as CFCs, halons and HCFCs that destroy stratospheric ozone
Heat a gas traps compared with the same mass of carbon dioxide