Earth Overshoot Day
Find the date a population "overspends" the planet's yearly resources, from its ecological footprint in number of Earths, free online.
About this calculator
Overshoot day = 365 ÷ (number of Earths your lifestyle needs) counted from 1 January. If everyone lived like you and it would take 1.8 Earths each year, resources for the whole year are used up by about day 203 (22 July).