Ozone day is celebrated on: *

Explanation

## Page 23 World Ozone Day, or the International Day for the Preserva­tion of the Ozone Layer, is observed every year on 16 September. Notably, the Montreal Protocol for the protection of the ozone layer came into effect from 16 September 1987. It is noteworthy that in 1994, the United Nations General Assembly announced the observance of this day.