Earlier quoted context omitted.
Oh my, you needed chatgpt to check that? ;) Btw, it is a kind of useful to have the date ordered in the obvious minor to major way...
I don't need AI to check this info. In the same way I don't need a car if I have a horse :) I could have spent much more time compiling the same information myself. You're free to keep using horses though.
But it's actually worse than that: while both the car and the horse will correctly move you from A to B, you can't cite an LLM output as a source and can't use it to check something. You can use it as a source of inspiration at best.
Here your LLM output is wrong. Someone from Germany wrote they most commonly use dots, in France we use slashes and I think countries around all do one of the other.
So yes, there's no way around doing it like we always did: find a reputable source to back a statement. And ChatGPT does not do this.
Better use a horse than a roulette.