The date values must
be in one of the following forms:
mmm
is the first three
letters of the month name.
yy or yyyy
is a two-digit or four-digit
integer that represents the year.
A value read with the
MONYYw. informat results in
a SAS date value that corresponds to the first day of the specified
month.
Note: SAS
interprets a two-digit year as belonging to the 100-year span that
is defined by the YEARCUTOFF= system option.