Hi akshay..
This forum is mainly for you to clear doubts on career choices . Since you 've asked for it.. It is in the 16th of September every year.
All the best.

September 16 was designated by theUnited Nations General Assemblyas theInternational Dayfor the Preservation of the Ozone Layer. This designation had been made on December 19, 2000, in commemoration of the date, in 1987, on which nations signed theMontreal Protocolon Substances that Deplete the Ozone Layer.
This question also came in this year neet exam

World Ozone day is being celebrated since 1994 as a measure to promote the idea of ozone layer protection. It is celebrated on the 16th of September.

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