Some dates are stored as seconds since 1970 (Epoch date), which may be the case here.
Depending upon your version of Crystal, you can have the database return a converted date, or you can convert it in Crystal using a formula such as:
dateadd("s",{table.field},#1/1/1970#)
If you find that this isn't the case, it's likely still a seconds since some date, but you'll have to learn what the baseline is.
-k