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Greenpeace Day

Join Greenpeace Day and be a part of the movement to protect our planet - together, we can make a difference for a greener, cleaner future.

Tuesday

September 2026

Last updated February 8, 2026 · by the Holiday Calendar Team

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YEARLY DATESeptember 15

OBSERVED INUnited States

CATEGORYNature

SUBCATEGORYConservation

INTRO

Introduction

PHOTO

On September 15, we celebrate Greenpeace Day – a day dedicated to promoting peace and protecting the environment. This global organization was founded in 1971 by a group of activists who wanted to bring attention to environmental issues and promote nonviolent action. Since then, Greenpeace has been at the forefront of advocating for positive change in the world through various campaigns and projects. This day is a reminder for all of us to take care of our planet and work towards a greener, more sustainable future. So let's join hands with Greenpeace and make a difference on this special day!

TIMELINE

Greenpeace Day Timeline

Greenpeace Foundation

Greenpeace was founded in Vancouver, Canada by activists Irving and Dorothy Stowe, Ben Metcalfe, Marie Bohlen, Jim Bohlen, Paul Cote, and Irving Stowe.

First Whale Campaign

Greenpeace’s campaign against commercial whaling begins, resulting in an eventual global ban on commercial whaling in 1986.

Rainbow Warrior Bombing

The Rainbow Warrior, Greenpeace's flagship, was sunk by French secret service agents, killing one crew member and drawing global attention to Greenpeace's mission.

Antarctic Treaty

Greenpeace’s campaigning sees success when the Antarctic Treaty prohibiting any mineral exploitation in Antarctica is signed by consultative nations.

Arctic Sanctuary Campaign

The organization launches a high-profile campaign for an Arctic Sanctuary, gathering millions of signatures globally.

Continuing Advocacy

In recent years, the organization continues to advocate on numerous issues such as climate change, deforestation, overfishing, and pollution.

GET INVOLVED

How to Celebrate Greenpeace Day

Join a clean-up event

Participate in a local beach, park, or river clean-up event organized by Greenpeace. This is a great way to make a positive impact on the environment and celebrate Greenpeace Day with others who share the same values.

HOST

Host an eco-friendly party

Celebrate Greenpeace Day by hosting a party that promotes sustainability and eco-friendliness. Use compostable plates and utensils, serve organic food and drinks, and encourage your guests to bring their own reusable cups and bags.

TAKE

Take action online

Use the power of social media to spread awareness about Greenpeace and its mission. Share informative posts, participate in online campaigns, and encourage your friends and followers to get involved.

Go on a nature hike

Celebrate the beauty of nature and the importance of preserving it by going on a nature hike. Take in the sights and sounds of the outdoors and appreciate the work that Greenpeace does to protect our planet.

DONATE

Donate to Greenpeace

Support Greenpeace's efforts by making a donation or becoming a member. This is a great way to not only celebrate Greenpeace Day, but also make a lasting impact on the environment.

WHY THIS DAY MATTERS

Why Greenpeace Day is Important

It celebrates the achievements of Greenpeace

Greenpeace has been at the forefront of many important environmental campaigns and has made significant progress in raising awareness and promoting change. Greenpeace Day gives recognition to their efforts and inspires us to continue supporting their cause.

It raises awareness for environmental issues

Greenpeace Day is an important day to remind people of the beautiful planet we live on and the importance of taking care of it. By spreading the message, we can help educate others about environmental problems and encourage them to take action.

It promotes activism

Greenpeace Day serves as a call to action for individuals and communities to get involved in helping the environment. Whether it's through volunteering, participating in events, or making lifestyle changes, this day reminds us that we all have a role to play in protecting our planet.

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