Converting a unix timestamp can be achieved using rexx statements in SMARTView logic. Using the CAF field OriginKey as an example, one of the following statements can be added to SMARTView logic to convert the timestamp held in the OriginKey field to a human readable date:
OriginKey = iss_convert_from_epoch(OriginKey,'%c')
OriginKey = iss_convert_from_epoch(OriginKey,'%Y/%m/%d %H:%M:%S')
OriginKey was equal to 1415978681 or 1415978681000, which returned "Fri, 14 Nov 2014 15:24:41" when converted.