March 22
it is observed on the day of 18 april
11th july
March 15th
4 february
World Music Day is a festival held on 21st June. Also, No Music Day is observed on 21st November.
world tourism day is celebrated on 27th of September
September 27
April 7th
11 july
March 20
24th March
World ozone day is on 16 September. It marks the start of Montreal Protocol.