Not an idiom and trivial for sure, but something that has been bugging me lately, particularly during tax time, is the order of dates. In Canada it used to be no problem....day/month/year..or 12/04/00, but in the last few years, when I've had to sort receipts by date, there no longer seems to be any consistancy and a receipt of 12/04/00 could be the 4th of December or the 12th of April 2000. Does the US use a different date order than Canada and this be the lack of consistancy lately?