Explanation:

• World Children's Day or Universal Children's Day is observed on 20 November to promote the education of children, health, proper care, and nourishment.
• This day is promoted and coordinated by United Nations Children’s Fund (UNICEF) which works towards the improvement of children’s welfare.
• On this date, the UN General Assembly adopted the Declaration of the Rights of the child in 1959. And it is also the date when the UN General Assembly adopted the Convention on the Rights of the Child in 1989.
• In India, Children's Day is celebrated on 14 November to commemorate the birth anniversary of Jawaharlal Nehru.