|Does this mean I am out of luck, then?|
No, it just means life got a bit more complicated.
First your going to have to figure out what Date Format was used.
If your in the USA, then the default format is MM/DD/YYYY or 06/21/2012
but if your across the pond,
then the European format is 21/06/2012 or DD/MM/YYYY
Hopefully, you don't have a mix of dates.
How are the majority of the dates formatted?
We'll do the most, first.