The reason you see ********** is that the underlying numeric value is larger than is expected by the MMDDYY format by about a factor of 86,400. Dates are measured by days in SAS and datetime values like you have are measured in seconds. So one "day" of a date time is 86,400 seconds and way to large for consideration as a date.
You need to talk to whoever is creating that file and beat them severely with wet spaghetti noodles for using a 2-digit year.
Second, the values you show represent what I call the "lazy Microsoft office programmer" of allowing a "date" to default to a datetime field with 0 hours, 0 minutes and 0 seconds. Useless and ugly if there is not actual time component used.