The date values must
be in one of the following forms:
mm
is an integer between
01 and 12 that represents the month.
dd
is an integer between
01 and 31 that represents the day of the month.
yy or yyyy
is a two-digit or four-digit
integer that represents the year.
You can separate the
month, day, and year fields by blanks or by special characters. However,
if you use delimiters, place them between all fields in the value.
Blanks can also be placed before and after the date.
Note: SAS
interprets a two-digit year as belonging to the 100-year span that
is defined by the YEARCUTOFF= system option.