I originally posted this on the other site back when I took the picture, and it resulted in a lot of confused comments, especially from Americans, eventually getting removed by overzealous mods. Either way, I promise you that this date does not exist, and has never existed.
No, ISO 8601 is the proper order. YYYY-MM-DD.
Wait, so month comes before day? I’ve been doing it right all along?
Please stop. That is another correct way to do it, and I said there is more than one, not two.