Skip to main content

Earth Overshoot Day

By Earth Overshoot Day 2020, we will have used more from nature
than our planet can renew in the whole year

When will Earth Overshoot Day land in 2021?  Join our contest to guess the date!

Are you a student? A teacher? Middle-school, high-school or university? Tell your class about this opportunity to learn about the Ecological Footprint, to explore data from the National Footprint Accounts, and to study the long-term trend of the global ecological deficit. And if you’re sitting alone at home, whoever you may be–because, let’s face it, this has become the lifestyle of too many of us since the coronavirus took over the world–please consider entering this contest too.

Starting about one year ago, COVID-induced lockdowns mandated throughout the world led to a slowdown of human activity and demand on nature in 2020. Consequently, we calculated that Earth Overshoot Day fell on August 22 last year or more than three weeks later than in 2019–a sharp reversal from the long-term trend. We shared our explanations here. We invite you to read through them carefully, as you may find yourself wanted to take into account the impact of the pandemic on the Ecological Footprint again this year.

The pre-COVID lesson plan which we designed to help you through this activity can be found here and we think you may still find it helpful.

Your contest entry is your estimate of the date for Earth Overshoot Day 2021, together with the method you devised to get your result. The winner(s) will be featured on and Global Footprint Network’s social media!

The deadline to submit your guess is May 22, the International Day for Biological Diversity! The date of Earth Overshoot Day 2021 and the winner(s) of the Guess-the-Date Contest will be announced on June 5, World Environment Day.

Find some inspiration in the 2020 winning contest entry!

Watch 2019 winners share their experience!

Solutions to #MoveTheDate

Effective solutions to #MoveTheDate of Earth Overshoot Day already exist in abundance. We believe it is possible to accelerate their implementation in the real world. How? By sharing knowledge of what works and bringing people together.

We’re excited to invite you to explore and populate our solutions platform, developed with the support of our Czech partner Mapotic.

Discover, champion, and share solutions you love

Explore Now!

Explore Solutions to #MoveTheDate

Thriving lives within the means of our planet are not out of reach. Plenty of solutions exist in five major areas
for improving sustainability: cities, energy, food, planet, and population.


How we design and manage cities

Eighty percent of the world population is expected to live in cities by 2050. City planning and urban development strategies are instrumental to balancing the supply of natural capital and population’s demand. Learn More


How we power ourselves

Decarbonizing the economy is our best possible chance to address climate change, and would improve the balance between our Ecological Footprint and the planet’s renewable natural resources. Learn More


How we produce, distribute, and consume food

How we meet one of our most basic needs–food–is a powerful way to influence sustainability. Sourcing food locally and avoiding highly processed foods can lower the Ecological Footprint. Learn More


How we help nature thrive

Humanity’s quality of life is dependent on the health of our planet’s biological resources including fertile soil, clean water, and clean air necessary for humanity to thrive. Learn More


How many of us there are

Being committed to everyone living secure lives in a world of finite resources requires addressing population growth. Empowering women is essential for global sustainability. Learn More

Country Overshoot Days

Calculate your personal Earth Overshoot Day

Past Earth Overshoot Days



By the Numbers

million years ago life first evident on Earth
increase in world population since 1970
decline in average population size of vertebrate species since 1970
of humanity’s Ecological Footprint is carbon


Earth Overshoot Day is an initiative of Global Footprint Network, an international research organization that is changing the way the world measures and manages its natural resources. The date of Earth Overshoot Day is calculated with data from Global Footprint Network’s National Footprint Accounts, which are now available for free on our Ecological Footprint Explorer Open Data Platform at