What's especially bad is things that are meant for an international audience. Like the 2023 Miami Formula 1 race was held the weekend of the 5th to the 7th of May. But, say you didn't know that and you see that the date is specified as: 05/07/2023. Is that a race in May or July? It's Formula 1 so the audience is probably mostly European so the European order makes sense. But, it's a race in the USA so the US order makes sense.

It really sucks when to decode a date and time you have to first figure out who the target audience for the information is, then use that to help decode the information.