Each year, a symbolic date reminds us of the urgent need to move toward more sustainable models of production and consumption: Earth Overshoot Day.

What is Earth Overshoot Day?

Earth Overshoot Day marks the time of the year when humanity has consumed all the biological resources that Earth is capable of regenerating during that same year. From that date onward, we enter a state of ‘ecological deficit,’ using natural resources faster than the planet can regenerate them and generating waste – especially CO₂ emissions – that ecosystems can no longer fully absorb.

In 2026, Earth Overshoot Day falls on July 30, according to calculations by the Global Footprint Network. This means that, in just over seven months, humanity has used up the planet’s annual ecological budget.

Today, we consume natural resources at a rate that exceeds the Earth’s capacity to regenerate them, meaning we would need approximately 1.7 planets to sustain our current way of life.

How is this date calculated?

The date of Earth Overshoot Day is obtained by comparing two indicators:

• Biocapacity: the ability of the Earth to regenerate natural resources and absorb waste.
• Ecological footprint: the demand that humanity places on those ecosystem resources and services.

The formula used is:

(Planet’s biocapacity ÷ Humanity’s ecological footprint) × 365 days

The result indicates how many days human consumption can be sustained with the resources that the planet generates during a year.

Why does the date change every year?

This is one of the most frequently asked questions.

Earth Overshoot Day does not have a fixed date because it depends on the evolution of two variables that constantly change: the human demand for resources and the regenerative capacity of ecosystems. Furthermore, international agencies periodically update the data used to perform the calculations, so the estimates may be revised when new information becomes available.

That is why a change in the date does not always necessarily mean that we have drastically improved or worsened. In some cases, the variation is due to methodological or statistical updates, as well as real changes in our consumption patterns, production, energy use, or natural resource management.

Recent evolution of Earth Overshoot Day

What is the origin of this day?

The calculation of Earth Overshoot Day is carried out by the Global Footprint Network, an international research organization specializing in sustainability and ecological footprint measurement. The campaign is supported by numerous environmental and scientific organizations around the world.

The concept was developed by Andrew Simms of the UK-based New Economics Foundation and began gaining global attention in 2006 with the aim of raising awareness about the planet’s ecological limits.

The organization’s analyses show that humanity entered a state of ecological overshoot in the early 1970s, when global consumption began exceeding the Earth’s annual capacity for regeneration.

What are the consequences of the overexploitation of resources?

Consuming more resources than nature can regenerate creates increasing pressure on ecosystems and has environmental, social, and economic consequences.

The main consequences are:

• Increased greenhouse gas emissions.
• Accelerated climate change.
• Loss of biodiversity and natural habitats.
• Degradation of soils and water resources.
• Deforestation and the overexploitation of oceans.
• Growing risks to food and energy security.

Moreover, the progressive shortage of certain resources can result in higher economic costs for companies, governments, and citizens.

What can we do to #MoveTheDate?

The good news is that this trend is not irreversible. Global Footprint Network promotes the initiative #MoveTheDate, aimed at delaying Earth Overshoot Day each year through sustainable decisions and actions.

The organization identifies five main areas of action:

• Planet: protect and restore ecosystems.
• Cities: develop more efficient and resilient urban environments.
• Energy: accelerate the transition to clean energy.
• Food: promote sustainable food systems.
• Population and well-being: foster development models compatible with the limits of the planet.

At an individual level, we can also contribute through everyday actions such as reducing food waste, choosing sustainable mobility options, using energy more efficiently, supporting the circular economy, and reducing the use of single-use plastics.

What do we do at Mapfre to contribute to a more sustainable future?

At Mapfre, we are aware that global challenges such as climate change or biodiversity loss require a collective response. Therefore, we continue to promote initiatives aimed at reducing our environmental impact and moving towards a more sustainable economy.

Through our Environmental Commitment, we work in areas such as energy efficiency, sustainable mobility, responsible resource management, emissions reduction, responsible water consumption, and biodiversity protection.

Because delaying Earth Overshoot Day does not depend on a single action, but rather on the combined impact of decisions made by citizens, companies, and institutions committed to a shared goal: building a more sustainable future for generations to come.