World Hello Day 21 Nov 2025

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

palette

Today in History

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

More Desktop Wallpapers:

A fox in the dunes
Finding beauty in ruins
2 Aug 2025Cowes Week
13 Apr 2025Songkran—Thai New Year
17 Jul 2025Lavender fields in Plateau de Valensole, France
11 Jul 2025World Population Day
24 Apr 2025Spire Cove in Kenai Fjords National Park, Seward, Alaska, United States
Celebrating our looming lunar neighbour
16 May 2025Endangered Species Day
The sprout with amazing potential
Love is in the snow
4 May 2024Brighton Festival
A sea of humanity
30 Oct 2023Common raven
A wave of remembrance
Lighting up the Badlands
What are these unique creatures?
14 Jul 2024Burrowing owl chicks
12 Jul 2024Mount Rainier National Park, Washington, USA
7 Mar 2025Plum blossoms, China
26 Sep 2025Least chipmunk, Kootenai National Forest, Montana, United States
6 Oct 2025Anshun Bridge, Chengdu, China
28 Jan 2025Short-eared owl
5 Jan 2025Plum-headed parakeet
What are these predators doing?
Portable portals into our imagination
2 Jun 2025Skipper butterfly on an Echinacea flower
2 Feb 2025Alpine marmot
29 Dec 2023Happy Hogmanay!
24 Jun 2024Kelimutu, Flores, Indonesia