Explanation

World Mountains Day is celebrated on 11 December every year.

Theme 2020: Protecting Mountain Biodiversity

Theme 2021: Sustainable Mountain Tourism

Theme 2022: Women Move Mountains

Explanation

World Mountains Day is celebrated on 11 December every year.

Theme 2020: protecting mountain biodiversity

Theme 2021: Sustainable Mountain Tourism

Theme 2022: Women Move Mountains

Explanation

The world’s population hit eight billion on November 15,2022 which the United Nations declared as the Day of Eight Billion.

Explanation

The 3 November 2022 will be the first International Day for Biosphere Reserves.

Explanation

• October 31 was designated as World Cities Day by the United Nations in 2014.
• Theme 2020: Valuing our communities ad cities 
• Theme 2021:Adapting cities for climate resilience
• Theme 2022: Act local to go global

Explanation

• October 31 was designated as World Cities Day by the United Nations in 2014.
• Theme 2020: Valuing our communities ad cities 
• Theme 2021:Adapting cities for climate resilience
• Theme 2022: Act local to go global

Explanation

World Day for Audiovisual Heritage is celebrated on 27 October. 

Theme 2020: Your window to the world

Theme 2021: A window to the world

Theme 2022: Enlisting documentary heritage to promote inclusive, just and peaceful societies

Explanation

World Osteoporosis Day is observed annually on October 20th for raising global awareness and treatment of osteoporosis and metabolic bone disease.

Theme 2020: That`s Osteoporosis

Theme 2021: Take action for bone health

Theme 2022: Step up for bone Health

Explanation

World Anesthesia Day is observed on 16 October to commemorate the first successful demonstration of diethyl ether anesthesia by William T. G. Morton on 16 October 1846.

Theme 2022: Medication Safety 

Explanation

Every year, the United Nations Day is celebrated on 24 October to mark the anniversary of the UN charter, which came into force in 1945.

Theme 2022: Building back together for peace and prosperity