I guess the 21/6 rationale is that some people call it "the twenty-first of June." Those people are wrong. It is "June twenty-first," or if you prefer, "June twenty-one." Do those people call the time "the thirty-seventh of three p.m."? I think not.
Well, as far as I can see, the 6/21-rationale is only a result of how dates are read in the english language, and not in any other way "The Right Way", is it more rational to have your dates MM/DD/YYYY, than to have them DD/MM/YYYY, the first one is middle-endian and really weird, while the second one is a little-endian approach, that appreciates the fact that the month and year part to an increasing degree might be implicated.
I agree on YYYY/MM/DD being practical for sorting purposes, but DD/MM/YYYY is just as practical for reading fast. If you have YYYY/MM/DD, you'll have to read either right-to-left, or make some small mental adjustments for the order. When is knowing the year more important than the date of something? Mostly in historical discussions, where the date is often less important than the year (and in many cases, the year might be the best known part of a historical date), but with current events, the first thing you'd like to know, is the date (or perhaps the month if the timescale is a bit bigger), then the month, and then whether it will happen in the far future (some other year), or just simply this year.
What it comes down to for me, is that MM/DD/YYYY is a weird NUXI, somewhat of an abomination in the concept of writing down dates, either use little-endian dates, or big-endian dates. Quite a few languages even appreciate this, and pronounce dates DD/MM/YYYY. As an example, norwegians say "21. Juli 2010".
The argument for MM/DD becomes even worse when looking at how the clock is read, "Quarter Past Three", would imply writing time MM:HH, which is quite in line with writing little-endian dates...
stuck hunting for a crack online just so he could play the game he payed for.
Yeah, i hate when that happens... Wait, what? You had problems connecting for authentication, so you hunted ONLINE for cracks?
The goal of science is to build better mousetraps. The goal of nature is to build better mice.