The Ultimate List of Environmental Holidays (2024)

Illustration of simple green environmental calendar

Every month at Good Good Good, we plan upcoming good news content for our Instagram, Goodnewsletter, Goodnewspaper, podcast, website, and more. Our work is always centered on hopeful stories about people making a difference in the world — and action steps on how each of us can join in with that good work.

With so many holidays, awareness days, education weeks, and activism months happening all year long, we’ve been slowly collecting all of these events in a private internal calendar for years.

We made our Monthly Cause Awareness Calendar publicly available earlier this year. We’ve also published:

And now we’re publishing our guide to environmental holidays and sustainability days.

Our hope is this resource will help you or your organization bring attention to important issues and communities — not just around Earth Day — but all year long.

Where applicable, we've included resources around highlighted holidays — usually in the form of good news around particular topics — or action steps on how to make a difference. We encourage you to share them if you find them helpful.

We've worked hard to make this the most comprehensive collection of environmental days and months on the internet. (We’ve also just finished collecting all of the animal-related environmental days in a separate calendar!) Always double-check dates, as organizers may occasionally change dates.

Bookmark this page and revisit it as often as you need. We'll continue to update it and add to it over time.

The Good Good Good Calendar of Sustainability Days, Environmental Awareness Weeks & Climate Months —



New Year’s Day - January 1st

Read the guide on sustainable New Year's Resolutions to help the Earth and come up with your “word of the year”

Greta Thunberg’s Birthday - January 3rd

Explore this timeline of Greta Thunberg’s environmental activism and Greta Thunberg’s best quotes

National Bird Day - January 5th

National Electricity Day - January 9th

Dian Fossey’s Birthday - January 16th

Read about how the population of endangered mountain gorillas has grown by 71% in a decade





World Wetlands Day - February 2nd

Transit Equity Day - February 4th

The Great Backyard Bird Count - February 18th

World Whale Day - Third Sunday of February

Read good news about humpback whales and learn how noise reduction can save whales



World Seagrass Day - March 1st

World Wildlife Day - March 3rd

Read and share the ultimate guide on how to celebrate World Wildlife Day

Solar Appreciation Day - Second Friday of March

International Day of Action for Rivers - March 14th

World Consumer Rights Day - March 15th

Global Recycling Day - March 18th

Taxonomist Appreciation Day - March 19th

World Rewilding Day - March 20th

Read the good news about rewilding projects multiplying across the UK with the goal of boosting biodiversity

International Day of Forests - March 21st

World Planting Day - March 21st

Learn how to plant trees for free by reading our review of Ecosia — an alternative to Google’s search engine

World Wood Day - March 21st

World Water Day - March 22nd

Read about the kids raising money for charity: water & listen to our interview with the organization’s founder, Scott Harrison

World Meteorology Day - March 23rd

Earth Hour - Last Saturday of March



World Aquatic Animal Day - April 3rd

Jane Goodall’s Birthday - April 3rd

Celebrate Jane Goodall’s birthday by reading her most famous inspirational quotes

Zoo Lovers Day - April 8th

International Cli-Fi Day - April 20th

Explore our list of the best “climate fiction” books

World Fish Migration Day - April 21st

Read about the fish doorbell going viral online

Earth Day - April 22nd

Read and share the ultimate guide on how to celebrate Earth Day and explore the best quotes about Earth Day

Weeks & Months

Earth Month

Explore our guide on the best ways to celebrate Earth Month

National Garden Month

National Park Week - Week-long event in April

Read and share our guide about how to celebrate National Park Week. Plus: Learn about fee-free days at national parks and the best national park gifts you can give

International Dark Sky Week - Week-long event in April

Read our good news story about reducing light pollution... through parkour.

Fashion Revolution Week - Week-long event in April

Create a more ethical and sustainable fashion industry by asking “Who made my clothes?” and “What are my clothes are made of?”



Greenery Day in Japan - May 4th

Green Up Day in Vermont - First Saturday of May

World Migratory Bird Day - Second Saturday of May

World Bee Day - May 20th

Listen to this inspiring podcast with Bee Girl Sarah

Endangered Species Day - Third Friday of May

Bike-to-Work Day - Third Friday of May

Read about the cities where bike commuting is growing fastest in the U.S.

Eat More Fruits and Vegetables Day - May 21st

Find out what fruits and vegetables are in season right now

International Day for Biological Diversity - May 22nd

European Day of Parks - May 24th

Intersectional Environmentalist Day - May 28th

Learn about intersectional environmentalism and the founder of the organization Intersectional Environmentalist, Leah Thomas



National Trails Day - First Saturday of June

World Reef Day - June 1st

World Environment Day - June 5th

World Oceans Day - June 8th

Read and share this guide about how to celebrate World Oceans Day

Coral Triangle Day - June 9th

Global Wind Day - June 15th

Nature Photography Day - June 15th

World Day to Combat Desertification and Drought - June 17th

#ShowYourStripes Day - June 21st

World Rainforest Day - June 22nd

Weeks & Months

Great Outdoors Month

National Pollinators Month

National Rose Month

‍Oceans Week - Week-long event in June

National Mosquito Control Awareness Week - Week-long event in June



Global Energy Independence Day - July 10

World Population Day - July 11th

International Day for the Conservation of the Mangrove Ecosystems - July 26th

World Nature Conservation Day - July 28th

World Ranger Day - July 31st

Weeks & Months

Plastic Free July

Latino Conservation Week - Week-long event in July

National Clean Beaches Week - July 1st to 7th



Anniversary of the Great American Outdoors Act - August 4th

Mountain Day - August 11th

National Honey Bee Day - Third Sunday of August



International Primate Day - September 1st

National Wildlife Day - September 4th

Amazon Rainforest Day - September 5th

International Day of Clean Air - September 7th

National Cleanup Day - 3rd Saturday of September

International Day for the Preservation of the Ozone Layer - September 16th

World Water Monitoring Day - September 18th

Clean Up the World Weekend - Third Weekend of September

Arbor Day - September 21st

Read the best quotes about trees to celebrate Arbor Day & read all of our good tree news

Zero Emissions Day - September 21st

World Car-Free Day - September 22nd

Explore this list of ways to live and get around without a car

National Public Lands Day - Last Saturday of September

Read and share this guide on how to celebrate National Public Lands Day. Plus: Get free access to national parks today!

World Environmental Health Day - September 26th

National Crush a Can Day - September 27th

World Rivers Day - Last Sunday of September

International Day of Awareness of Food Loss and Waste - September 29th

Learn about how to reduce food waste

Weeks & Months

Zero Waste Week - First Week of September

As you’re preparing for the holiday season, explore our guide to consumable gifts that help you reduce waste in your gift-giving

European Mobility Week - Week-long event in September

National Drive Electric Week - Week-long event in September

Climate Week - Week-long event in September, while the United Nations General Assembly is in session



World Habitat Day - First Monday of October

World Vegetarian Day - October 1st

National Green City Day - October 1st

World Farm Animals Day - October 2nd

World Animal Day - October 4th

Read and share some meaningful good news stories about animals

Energy Efficiency Day - First Wednesday of October

International Day for Natural Disaster Reduction - October 13th

International E-Waste Day - October 14th

Learn more about the “right to repair” and how different countries are creating solutions

World Food Day - October 16th

Learn more about World Food Day: Your appetizer is reading about world hunger, your main course is food-related good news, and your dessert is quotes about solving world hunger.

International Day of Climate Action - October 24th

Sustainability Day - Fourth Wednesday of October

Weeks & Months

World Habitat Awareness Month

National Vegetarian Month

Junk Mail Awareness Week - October 1st to 7th

Learn how to unsubscribe from pesky junk mail to reduce paper waste

National Herbal Medicine Week - Last Week of October



World Vegan Day - November 1st

International Day for Preventing the Exploitation of the Environment in War and Armed Conflict - November 6th

National Recycling Day - November 15th

National Hiking Day - November 17th

World Fisheries Day - November 21st

Green Friday - First Friday after Thanksgiving

Explore this sustainable shopping guide to make sure your holiday shopping is eco-friendly

Giving Tuesday - First Tuesday after Thanksgiving

Learn how to volunteer with or donate to environmental organizations for Giving Tuesday (and more ideas to help the planet)

Weeks & Months

Native American Heritage Month

Learn about how to honor the earth (and other ideas and actions) during Native American Heritage Month



Wildlife Conservation Day - December 4th

Meet these famous wildlife conservationists you may not know yet

World Soil Day - December 5th

International Mountain Day - December 11th

Look for an Evergreen Day - December 19th

More Green Holidays & Events

Meatless Mondays

Take one day off from eating meat each week as a way to care for the planet and animals. A small reduction can make a huge difference.

Fridays For Future

Join thousands of youth from around the world who walk out of school or participate in strikes on Fridays — all as a way to demand climate action.

Is this list missing a holiday or awareness week/month? Let us know. We want to ensure this list is comprehensive and inclusive.

Article Details

September 13, 2022 4:08 PM
June 20, 2023
Rainbow colored calendar for June's awareness month

June: Awareness Months & Holidays for Causes

The ultimate calendar of June’s awareness days, national months, and more...
Purple and gold calendar for May awareness months, days, and weeks

May: Awareness Months & Holidays for Causes (2024)

The ultimate calendar of May’s awareness days, national months, and more...
Simple monthly awareness calendar, illustrated in a handdrawn style

Ultimate Calendar: Awareness Months & National Days

Your simple guide to the hundreds of national and global awareness holidays dedicated to supporting meaningful causes.
A Kenyan woman smiles and holds her recycled plastic bricks

12 Good News Stories About Climate Change

The best positive news stories about the environment you may not have heard about.

Want to stay up-to-date on positive news?

The best email in your inbox.
Filled with the day’s best good news.