mianm

Has a fair amount of data about current MPs including expenses claimed and voting history.

The majority of English speakers and people in general don't speak American English, so it makes zero sense to default to "M/D/Y", unless the user explicitly states to use American English, over a more logical order, ideally Y-M-D.

Pretty much all defence in this thread of M/D/Y is just American exceptionalism.

M/D/Y should never be a default for any software without the user explicitly selecting it or specifying their country.