data hw13; input id hire_date birth_date; datalines; 101 8/12/2017 21-Aug-71 102 9/4/2017 30-Apr-75 103 10/28/2017 23-Apr-88 104 1/5/2018 18-Feb-75 105 10/31/2017 18-May-73 106 9/11/2017 04-Mar-72 107 1/27/2018 01-Dec-76 108 3/5/2018 26-Apr-72 109 2/23/2018 04-Jan-92 110 1/16/2018 29-Oct-82 ; run; can not read this date