Every year, November 21 is World Hello Day. The objective is to say hello to at least ten people on the day. By greeting others, the message is for world leaders to use communication rather than using force to settle conflicts. Hello Day encourages us to take the opportunity to simply greet people, and to recognize how important simple communication is in our daily lives, and for peace between peoples.

World Hello Day began in 1973 to promote peace between Egypt and Israel. There are now 180 countries involved in the attempt to foster peace throughout the world, and letters supporting the effort have been written by people such as John Glenn, Colin Powell, Kofi Annan, and the United Nations Children's Fund (UNICEF).