It's more that different places use different versions that gets me. I have wrote a bunch of importers for sales an nearly all of them list the date time differently. Very few affiliate networks have used either a timestamp or the standards based datetime.
That used to be the case in the UK, but I notice more and more how I'm the only one actually using that form in conversation these days, at least in my little corner of Northern England. Indigenous people have clearly moved on to DMY, i.e. "the 30th of January".
To me, MDY makes as much sense as writing pi as 14.3.159265