I have a need to add validation to date field in a list form that will check that the date entered in the date field (which is a date picker), validates that it is not older than one year from what is entered. Meaning today is 4/10/2013 then the date can not be greater than 4/10/2014 , however everytime I add a rule no validation works. I have tried the now(), the today(), the less than the greater than etc.... and nothing seems to work. I relize that infopath holds the date in a different format but that doesn't help with a solution. I can not add customized code to this form and again it is tied to a SP list, so can anyone provide a work around or fix to be able to validate date fields?