Every year, between April and May, Italy reaches a milestone that nobody wants to celebrate: its Overshoot Day, the day on which our country has already consumed all the natural resources that the Earth can regenerate in an entire year. From that moment on, we are in debt to the planet.
If you are wondering what Overshoot Day means, when it falls in Italy or how many Earths we consume, you are in the right place. In this article you will find a complete answer, with a year-by-year historical comparison and the concrete steps you can take — yes, you too, today.
What is Overshoot Day? Meaning and definition
Overshoot Day (in Italian: giorno del sovrasfruttamento) is the date on which humanity — or a single country — has consumed all the biological resources that the Earth is able to regenerate during that year. Once this threshold is crossed, we enter ecological deficit: we draw on resources that belong to future years, taking them away from the next generations.
It is calculated every year by the Global Footprint Network, an international research organisation. The method is based on two quantities:
- Ecological footprint: how much land and water area a person needs to produce everything they consume (food, energy, fibre, timber) and to absorb the waste and CO₂ emissions generated.
- Global biocapacity: the Earth’s capacity to regenerate its natural resources every year.
The formula is simple: biocapacity is divided by the ecological footprint and multiplied by the 365 days of the year. The result is the date of Overshoot Day. There are two types of Overshoot Day:
- Earth Overshoot Day → the global date for all of humanity (in 2025 it fell on 24 July).
- Country Overshoot Day → the specific date for each individual country, calculated as if all of humanity lived with that nation’s consumption lifestyle.
When is Overshoot Day in Italy?
Italy reaches its Overshoot Day between the end of April and mid-May, with small variations from year to year. If all 8 billion inhabitants of the Earth consumed resources like Italians, the planet would have used up its annual ecological budget already in the first half of the year.
This means that Italy requires the equivalent of about 3 Earths to sustain its lifestyle. To put it even more directly: it would take more than 5 “Italies” of territory to meet the demand for nature of Italian residents — a figure that places us consistently among the countries with the heaviest footprint in Europe.
You will find the updated date every year in the historical section below.
The evolution of Overshoot Day in Italy: the historical picture
In recent years the Italian date has fluctuated, partly because of methodological revisions in the Global Footprint Network data. Here is the updated picture:
- Overshoot Day Italy 2021: 13 May
Similar to 2020; post-pandemic effect still present. - Overshoot Day Italy 2022: 15 May
Slight improvement compared with 2021. - Overshoot Day Italy 2023: 15 May
Stable, but already in deficit by mid-year. - Overshoot Day Italy 2024: 19 May
Apparent improvement, also linked to data revisions. - Overshoot Day Italy 2025: 6 May
13 days earlier than in 2024, partly due to new data on agricultural land and the marine carbon balance. - Overshoot Day Italy 2026: 3 May
Further advance: Italy requires about 3 Earths.
What does this trend tell us? The date has stabilised — and in some years moved earlier — around the first days of May. The “jump” between 2024 and 2025 is not only the result of worsening consumption: the 2025 methodological revision updated the data on agricultural land and ocean carbon sequestration, shifting the dates of many countries. However, the structural data remains worrying: Italy has been consistently above the sustainability threshold within the first half of the year for years.
Where does Italy stand in the global and European context?
To understand the Italian situation, it is worth looking around. For reference, here is how the dates are distributed for the main countries (2026 data):
- Qatar: 4 February — the country that consumes the most in absolute terms
- United States: 14 March
- France: 24 April
- European Union (average): 3 May
- Italy: 3 May — in line with the EU average
- Spain: 4 June
- Earth Overshoot Day (global): July–August (varies every year)
Italy sits in the middle band of European countries: generally more virtuous than France and Northern European countries, but far from sustainable.
How many Earths does Italy consume?
According to data from the National Footprint and Biocapacity Accounts, Italy’s per capita ecological footprint translates into a need for about 3 Earths if all of humanity lived like us. In terms of national territory, more than 5 Italies would be needed to meet the resource demand of Italian residents alone.
The factors that weigh most on Italy’s ecological footprint are:
- The carbon footprint (fossil emissions): accounts for 61% of the global ecological footprint
- Food consumption, in particular animal protein
- Private mobility and air transport
- Land consumption and infrastructure
What happens after Overshoot Day?
After 3 May, Italy — like all countries in overshoot — begins to draw on the “ecological current account” of future years. In practice:
- Deforestation continues to meet the demand for timber and agricultural land without allowing the time needed for regeneration.
- Fish stocks are depleted beyond natural replenishment rates.
- CO₂ accumulates in the atmosphere faster than forests and oceans can absorb it.
- Biodiversity degrades and the ability of ecosystems to regenerate is compromised.
The ecological debt accumulated by humanity from the early 1970s to 2026 is equivalent to 22 years of the Earth’s full biological productivity — a burden we leave as an inheritance to future generations.
What can you do? Concrete actions to reduce your ecological footprint
The good news is that solutions exist, and many are within everyone’s reach. Every individual choice, multiplied by millions of people, has a real impact.
Food Reducing meat consumption (especially beef) is one of the most effective actions: livestock production is responsible for a huge share of emissions and land use. Choosing local and seasonal products, reducing food waste and preferring a diet rich in legumes and vegetables can move your personal Overshoot Day forward by weeks.
Mobility Using public transport, cycling or walking for short trips and cutting down on intercontinental flights: these behaviours significantly affect your individual carbon footprint.
Home and energy Switching to a renewable energy supplier, improving the thermal insulation of your home, choosing efficient appliances and reducing heating and cooling consumption are measures with lasting effects.
Consumption Buying less and better, preferring second-hand, repairing instead of replacing, avoiding fast fashion: every manufactured item has an ecological cost that begins well before it reaches our hands.
Calculate your personal Overshoot Day The Global Footprint Network offers a free test at footprintcalculator.org to find out when your personal Overshoot Day would fall. It is a great starting point for understanding where to take action.
How WOWnature can help you take action
At WOWnature we believe that every tree planted is a concrete act of giving back to the Earth. Forests are one of the few natural tools able to absorb CO₂, protect biodiversity, regulate the water cycle and keep the soil fertile — everything needed to keep overshoot in check.
By adopting a tree with WOWnature you directly support our reforestation projects in Italy, helping to reduce the country’s ecological deficit. It is not about offsetting, but about regenerating: every forest that grows is biocapacity that becomes available again.
