The NENGO
w.
format writes SAS date values in the form
e.yymmdd,
where
e
is the first letter
of the name of the emperor (Meiji, Taisho, Showa, or Heisei).
yy
is an integer that
represents the year.
mm
is an integer that
represents the month.
dd
is an integer that
represents the day of the month.
If the width is too small, SAS omits the period.