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11月21 Fun Holiday – World Hello Day

World Hello Day on November 21 is an unofficial holiday created to promote world peace through interpersonal communication.

Woman waving hello out of a car window.

Say "hello" to everyone you meet on World Hello Day.

©iStockphoto.com/Maridav

The unofficial holiday was created by Brian and Michael McCormack as a response to the Yom Kippur War between Israel and a coalition of Arab states led by Egypt and Syria in 1973.

Say Hello

The purpose of World Hello Day is simple – to encourage communication and dialogue between people of different backgrounds in order to achieve peace and understanding.

Since its beginning in 1973, the day has been celebrated around the world annually with several Nobel Peace Prize winners and peace activists taking part in it.

How to Celebrate?

  • World Hello Day requires that participants greet at least 10 people. These people can be family and friends, but it is suggested that one finds strangers to greet and talk to.

Did You Know…

…that hello was used as a telephone greeting for the first time by Thomas Edison?

World Hello Day Observances

Fun Holiday: World Hello Day Observances
YearWeekdayDateName
2025金曜日11月21日 (金)World Hello Day
2026土曜日11月21日 (土)World Hello Day
2027日曜日11月21日 (日)World Hello Day
2028火曜日11月21日 (火)World Hello Day
2029水曜日11月21日 (水)World Hello Day
2030木曜日11月21日 (木)World Hello Day
2031金曜日11月21日 (金)World Hello Day
2032日曜日11月21日 (日)World Hello Day
2033月曜日11月21日 (月)World Hello Day
2034火曜日11月21日 (火)World Hello Day

See all Fun Holidays

Other Fun Holidays around 十一月21日 (金)

20 11月

Use Less Stuff Day

Cut down on your carbon footprint by using and buying fewer things on this environmentally conscious holiday.

22 11月

Go For a Ride Day

Take a ride on your favorite vehicle and feel the wind in your hair.

23 11月

Fibonacci Day

Honor the eminent Italian mathematician, Leonardo Bonacci or Leonardo of Pisa on this mathematical holiday.