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World Clean and Green Week

Join the global movement to make our planet cleaner and greener during World Clean and Green Week - small actions make a big impact!

Thursday

17–23

September 2026

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATESeptember 17-23

OBSERVED INPhilippines

CATEGORYNature

SUBCATEGORYConservation

INTRO

Introduction

PHOTO

September 17 marks the beginning of World Clean and Green Week, a time to focus on taking care of our planet and making it a cleaner and greener place for all. This week-long event was first started in 1990 by the International Society of City and Regional Planners, with the goal of promoting environmental awareness and encouraging individuals to take action towards preserving our natural resources. From participating in local clean-up events to implementing eco-friendly habits in our daily lives, there are countless ways we can make a positive impact during this special week. So let's get ready to go green and celebrate our beautiful planet!

TIMELINE

World Clean and Green Week Timeline

World Clean and Green Week Inception

The International Society of City and Regional Planners initiates the first World Clean and Green Week to promote environmental awareness.

Global Participation Increases

By this year, World Clean and Green Week experiences increased international participation, raising global environmental consciousness.

Special Focus on Water Conservation

This year's World Clean and Green Week places a special focus on water conservation, underlining the importance of preserving our water resources.

Emphasis on Climate Change

Climate change takes center stage during World Clean and Green Week, with activities aimed at reducing greenhouse gas emissions.

Pandemic Promotes Virtual Engagement

Due to the COVID-19 pandemic, many activities are held virtually during World Clean and Green Week, expanding its accessibility further.

GET INVOLVED

How to Celebrate World Clean and Green Week

Plant a tree

Gather some friends and family and plant a tree in your local community. Not only will this help the environment, but it will also create a sense of community and teamwork.

ORGANIZE

Organize a neighborhood clean-up

Get together with your neighbors and clean up your neighborhood. This can include picking up trash, planting flowers, or even painting over graffiti.

HOST

Host an eco-friendly potluck

Invite friends and family over for a potluck where everyone brings a dish made with locally sourced, organic ingredients. This is a great way to promote sustainable eating habits and reduce waste.

START

Start a recycling challenge

Challenge your friends and family to see who can recycle the most during World Clean and Green Week. The winner gets a prize and the satisfaction of doing their part for the environment.

VOLUNTEER

Volunteer at a local park or nature reserve

Spend a day volunteering at a local park or nature reserve. This could include planting trees, picking up trash, or helping with maintenance tasks. Not only will you be helping the environment, but you'll also get to enjoy the beauty of nature.

WHY THIS DAY MATTERS

Why World Clean and Green Week is Important

It promotes sustainable living

By educating people on the importance of sustainability, World Clean and Green Week encourages individuals to adopt habits that reduce their carbon footprint. This includes things like recycling, using renewable energy sources, and reducing water usage. These actions help to preserve the planet for future generations.

It promotes environmental awareness

World Clean and Green Week serves as a reminder to individuals and communities around the globe about the importance of taking care of our planet. Through various events and initiatives, this week brings attention to environmental issues and encourages people to take action towards preserving our natural resources.

It encourages positive change

This week serves as an opportunity for people to come together and make a positive impact on their surroundings. Whether it's participating in a beach clean-up or starting a community garden, World Clean and Green Week inspires individuals to take action and create a cleaner, greener world for everyone.

Related holidays

Earth Month

Join the movement and make a positive impact this Earth Month - from small changes to big actions, let's protect our planet together!

World Environment Day

Let's join forces to protect our planet - World Environment Day is the perfect day to celebrate nature and take action for a better future!

World Water Week

Make a splash during World Water Week! Help preserve our planet's most precious resource and shape a water-wise future.

National Cleanup Day

Make a difference and join in on National Cleanup Day - help keep your community beautiful by picking up litter and reducing waste!

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