Here's a note that may help you remember:
European-style dates, of the form dd/mm/yyyy, are little-endian. Little-endian breaks naive date sorting: 01012004 is greater than 02012005. So if you can just build an association between "European" and "little", the rest follows from there: European dates → broken sorting → broken architecture → x86.
(US-style dates are middle-endian, and we'd all do better to eliminate them. It's too easy to confuse them with little-endian dates if we switched that way, so why not use big-endian dates? I do whenever sorting matters, like in file names.)