World Hello Day 21 Nov 2025

World Hello Day

This harbour seal, photographed at Robert Moses State Park on Long Island, New York, seems to be onto something—spreading good vibes, one wave at a time. That"s exactly the spirit of World Hello Day, celebrated every November 21. This cheerful observance began in 1973 when two American brothers, Brian and Michael McCormack, launched it as a peaceful response to global tensions. They mailed 1,360 letters in seven languages to world leaders, inviting them to join the first celebration. Their message was simple yet powerful: personal communication can help preserve peace. Today, people in more than 180 countries participate.

© Vicki Jauron, Babylon and Beyond Photography/Getty Images

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Today in History

Kick-off in Qatar
21 Nov 2023Grey seal pup
21 Nov 2024Lion cubs, South Africa

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27 Jun 2025Splendid leaf frog
22 Apr 2025Earth Day
What are these unique creatures?
Look up, incoming…
Don’t look down!
One rare streak
23 Jan 2026Þorrablót, Icelandic midwinter festival
11 Sep 2025Gdańsk on the banks of the Motława river, Poland
9 Sep 2025Eurasian red squirrel, Switzerland
5 Feb 2025Scottish Blackface sheep, Aberdeenshire, Scotland
We can all just get along
It’s party time
14 Jan 2026The staircase of the Fortress of Palamidi, Nafplio, Greece
10 Nov 2024Remembrance Sunday
Beauty beyond imagination
Aug 23, 2023Skógafoss waterfall, Iceland
28 Sep 2025Town of Pienza in Tuscany, Italy
24 Mar 2025Sydney Harbour, New South Wales, Australia
One giant leap for mankind
A walk in the clouds
Where are these spectacular peaks?
Widespread and long-eared
The sprout with amazing potential
6 Jan 2025Flooded crypt, Basilica of San Francesco, Ravenna, Italy
Celebrating the tropics
Autumn in Georgia
15 Sep 2023Glenariff Forest Park, County Antrim, Ireland
Bridging past and present
All hail the mighty mangrove!