Earth Overshoot Day (EOD) is the calculated illustrative calendar date on which humanity's resource consumption for the year exceeds Earth’s capacity to regenerate those resources that year. The term "overshoot" represents the level by which human population overshoots the sustainable amount of resources on Earth. When viewed through an economic perspective, EOD represents the day in which humanity enters environmental deficit spending. EOD is calculated by dividing the world biocapacity (the amount of natural resources generated by Earth that year), by the world ecological footprint (humanity's consumption of Earth's natural resources for that year), and multiplying by 365, the number of days in a year:

In 2020 EOD lands on August 22 more than three weeks later than 2019, due to coronavirus induced lockdowns around the world.[2] The president of the Global Footprint Network claims that the Coronavirus pandemic by itself is one of the manifestations of "ecological imbalance".[3]

Earth Overshoot Day is calculated by Global Footprint Network and is a campaign supported by dozens of other nonprofit organizations.[4] Information about Global Footprint Network's calculations[5] and national Ecological Footprints are available online.[6]