Joined: 14 Mar 2007 Posts: 8652 Location: Back in jolly old England
Do you not have your own set of manuals at the shop you work in ? They can be accessed freely at www.sas.com
Take a look at FORMATS in the manuals and your question will be answered.
Are the variables you are using generated by SAS, or merely to be converted by SAS to a different format. SAS uses a base point for its date routines, and if these variables are not SAS generated then you will need to find the base point of these variables and adapt them to fit in with the SAS base point.