World Hello Day
World Hello Day is the perfect moment to say “Hello!” to someone you may or may not know.
Summary: World Hello Day was founded by brothers Brian and Michael McCormack in 1973 in response to conflict between Egypt and Israel, known as the Yom Kippur War. The two mailed 1,360 letters to government leaders in seven languages to share the message of World Hello Day. Since their initial efforts, World Hello Day has been observed by people in 180 countries.
What to say: World Hello Day is the perfect moment to say “Hello!” to someone you may or may not know. According to the official website for World Hello Day, anyone can participate. Participants are encouraged to greet 10 different people on World Hello Day as a demonstration of the power of personal communication for fostering peace.