Pi Day is an annual opportunity for math enthusiasts to recite the infinite digits of Pi, talk to their friends about math, and eat pie.

World Poetry Day celebrates one of humanity’s most treasured forms of cultural and linguistic expression and identity.

The International Day for the Elimination of Racial Discrimination is both a day of recognition and an urgent call to action.

International Children's Book Day is celebrated to inspire a love of reading and to call attention to children's books.

World Health Day is celebrated annually and each year draws attention to a specific health topic of concern to people all over the world.

Earth Day is an annual event on April 22 to demonstrate support for environmental protection. 

World Book and Copyright Day is a celebration to promote the enjoyment of books and reading.

World Day for Safety and Health at Work raises awareness of how to make work safe and healthy and of the need to raise the political profile of occupational safety and health.

Free Comic Book Day is a single day when participating comic book specialty shops give away comic books absolutely free to anyone who comes into their shops.

This day promotes awareness of issues relating to families and to increase the knowledge of the social, economic and demographic processes affecting families.

World Refugee Day is an international day designated by the United Nations to honour refugees around the globe.

International Youth Day brings youth issues to the attention of the international community and celebrates the potential of youth as partners in today’s global society.