A calculation field, result date:
Max ( Date1 ; Date2 )
could solve your problem, but only IF you need the latest date of that one record.
You could make the field intended for the newer date a calcutation field with the following calculation:
If ( Date1 > Date2 ; Date1 ; Date2 )
Try it, should do what you are looking for...
Thanks I got it to work using the If Statement.