Data validation Memes

The eternal date format war rages on! While most of the world sensibly uses the pyramid of DD/MM/YY (small to big), and some Asian countries flip it upside-down (YY/MM/DD), the USA just... does whatever the hell it wants with MM/DD/YY. It's like they designed their date format the same way they designed their healthcare system – maximum confusion for everyone involved. The beautiful irony is that only the YY/MM/DD format is actually ISO-8601 compliant and makes perfect sense for sorting. Meanwhile, programmers everywhere silently weep when handling date inputs from international users. Nothing says "fun weekend project" like writing regex to figure out if 03/04/05 means March 4th, 2005 or April 3rd, 2005 or... wait... 1905?