Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EarthDay.org including 1 billion people in more than 193 countries. The official theme for 2022 is Invest In Our Planet.

The National Girl Child Day is celebrated in India every year on January 24th. It was initiated in 2008 by the Ministry of Women and Child Development and the government of India, in order to spread public awareness about inequities that girls face in Indian society.

World AIDS Day, designated on 1 December every year since 1988, is an international day dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection and mourning those who have died of the disease.

October 15 of every year is celebrated as World Students' Day in honour of former Indian president APJ Abdul Kalam, who was born on the same day in 1931. The day aims to acknowledge the efforts of Kalam towards education and students.

International Day for Disaster Risk Reduction is observed annually on 13 October. The day celebrates how individuals and communities around the world are raising awareness about the importance of reining in the risks they face, as well as reducing their exposure to disasters.

International Day of the Girl Child is an international observance day declared by the United Nations; it is also called the Day of Girls and the International Day of the Girl. October 11, 2012, was the first Day of the Girl Child.

World Mental Health Day is an international day for global mental health education, awareness and advocacy against social stigma. It was first celebrated in 1992 at the initiative of the World Federation for Mental Health, a global mental health organization with members and contacts in more than 150 countries.

India observes Indian Air Force Day every year on October 8 because, on this day, the Air Force in India was officially raised as the supporting force of the Royal Air Force of the United Kingdom in 1932. Every year, Indian Air Force Day is celebrated at Hindon Air Force Station, Ghaziabad, Uttar Pradesh. The celebrations are marked in the presence of the IAF chief and senior officials of the three-armed forces.

Gandhi Jayanti is an event celebrated in India to mark the birthday of Mahatma Gandhi. It is celebrated annually on 2 October, and it is one of the three national holidays of India. Mahatma Gandhi is also known as the"Father of The Nation"and this title was given to him by Netaji Subhash Chandra Bose for his relentless struggles for our independence.

The International Day of Older Persons is observed on October 1 each year. On December 14, 1990 the United Nations General Assembly voted to establish October 1 as the International Day of Older Persons as recorded in Resolution 45/106.