Earth Overshoot Day beregnes officielt af [[Global Footprint Network]], som er en kampagne, der støttes af en lang række [[ngo]]'er.<ref>{{cite web | url = https://www.overshootday.org/about-earth-overshoot-day/ | title = About Earth Overshoot Day | publisher = overshootday.org | accessdate = {{dato|1-8-2018}} | archive-date =  4. juni 2020 | archive-url = https://web.archive.org/web/20200604104102/https://www.overshootday.org/about-earth-overshoot-day/ | url-status = ok }}</ref> Det er muligt på Internettet at finde informationer om beregningen af den generelle EOD,<ref>{{cite web | url = https://www.footprintnetwork.org/resources/data/ | title = Data and Method | publisher = footprintnetwork.org | accessdate = {{dato|1-8-2018}} | archive-date =  8. november 2019 | archive-url = https://web.archive.org/web/20191108075647/https://www.footprintnetwork.org/resources/data/ | url-status = ok }}</ref> ligesom man kan finde nationale økologiske fodaftryk.<ref>{{cite web | url = http://data.footprintnetwork.org/#/ | title = Global Footprint Network | publisher = footprintnetwork.org | accesdate = {{dato|1-8-2018}} | archive-date =  8. august 2017 | archive-url = https://web.archive.org/web/20170808050235/http://data.footprintnetwork.org/#/ | url-status = ok }}</ref>
Samfund Miljø_og_samfund