World Hello Day is a secular unofficial holiday celebrated on November 21 by 180 countries to illustrate the importance of personal communication for preserving peace. On this day, people are encouraged to participate by simply greeting 10 people. Winners of the Nobel Peace Prize are among the people who have noted World Hello Day’s value as an instrument for preserving peace and as an occasion that makes it possible for anyone in the world to contribute to the process of creating peace. Other supporters include almost 100 authors, entertainers, and world leaders. Remember to greet someone kindly on this day!