> But if Americans follow the reasoning to put the most important information first, then why do they say "March 5th, 2024"? With that reasoning shouldn't it be

> But if Americans follow the reasoning to put the most important information first, then why do they say "March 5th, 2024"? With that reasoning shouldn't it be "2024 March 5th"? Because you're falsely equating "important" and "significant". It's not about little endian vs big endian, which is all about magnitudes. Most of the time, the year is implicit (i.e., this year, or perhaps next year but that will be inferred from the month). Rolling over months happens quite often, rolling over years is rare. And in cases where the month really doesn't matter, it'll be dropped: "see you on the 5th!" That said, I personally dislike both MM-DD-YYYY and DD-MM-YYYY. Mon DD, YYYY is fine. YYYY-MM-DD (ISO8601) is fine (and to be preferred when naming files or in any other context where you'll be seeing lots of dates at once).