It's not possible really, to fully validate this.
10/11/2010
This is a valid date. Is it Oct 10 or Nov 11? Who knows...
It's best to follow the regional date settings if at all possible, and for data that is being used in international settings, use a date format that is not subject to doubt, such as the following (the last is ISO 8601 and is to be hoped will gain more adherence):
October 11, 2010
11-Oct-2010
2010-10-11