Until a couple of years ago, google's date picker for custom range search only worked if your locale was set to use the American date format. If your locale used any other other format, it would flip them around and give you a completely different time range. It always amused me how just a couple of clicks from their main product was a case they probably didn't even test for any non-US date formats, and cared so little about it that it took them years to fix it, despite bug reports. In that case, almost all of the non-US world was the edge case.