You can accumulate/partition statistical numbers in different granularity. Here it's done by countries. You could also do it by men or women or whatever partitioning you want. And of course you can choose to not partition at all and report only one global number.

Calling it still earth overshoot day after partitioning might be not fully correct.

Check here for your country overshoot day https://www.overshootday.org/newsroom/country-overshoot-days...