SAS date and time informats read
date and time expressions and convert them to SAS date and time values.
Like other SAS informats, date and time informats have several parts:
SAS informat names indicate
the form of date expression that can be read using that particular
informat. This chapter covers commonly used date and time informats
such as these:
There are several ways to represent a date. For example, all the following expressions represent the date October 15, 2009. Each of these common date expressions can be read using the appropriate SAS date informat. ...