Problem is that languages get in the way. Some are pretty similar like 15 ago (Spanish) being 15 Aug (English), but 1 ene (Spanish) aren’t that similar to 1 Jan (English).

And for the usual “But English is used everwhere! I live in X!” crowd: NO, it isn’t. Not everything you see as an “expat” is the same as the actual locals with their own language.