Earth Overshoot Day is the point in the year when human demand for materials obtained from nature exceeds what the Earth can naturally regenerate in one year. For 2025, Earth Overshoot Day fell on July 24, the earliest it has been since the event was first calculated in 2006.

The Earth Overshoot Day was first launched in 2006 by Andrew Simms, an author, political economist and campaigner, in collaboration with Global Footprint Network, as reported by Sustainability Magazine. Since then, Earth Overshoot Day is calculated and announced annually. Since 2006, the date has come earlier and earlier, signaling just how rapidly human consumption habits are growing and stripping the planet of its resources.

This year, Global Footprint Network also recalculated previous Earth Overshoot Days, even prior to 2006, for greater accuracy.

According to the latest calculations, Earth Overshoot Day fell as late as December 31 in 1972 but crept up to November 3 by 1979. In the early 1980s, the date went back into early December, only to reach October 12 by 1989.

The date stayed in October from 1989 until 1999, when it reached September 25. In 2006, when Earth Overshoot Day was first announced, the latest calculations put the event on August 22.