In reply to Amin.

The best place to ask such questions and receive a quick answer from the community: communities.sas.com. You'll find active discussion forums for all sorts of SAS topics, including programming/data related topics such as this one.

As far as a specific answer, I recommend looking at the ANYDTDTE informat. Note that the DATESTYLE system option is used to control how day/month/year order is interpreted for the data values that you're reading in.