Someone passed me date variables like that follows.  Both Finished_date (Char 15 $15. $15.) and Start_date (Char 10 ) are characters.   I'd like to compute difference in days between Finished_date  and Start_date; that is, Diff_days = Finished_date - Start_date, but it does not work. How can I do this simple subtraction? convert character to date format first?  Thank you very much for your help! Lee Finished_date Start_date 2/15/2020 10/15/2018 2/15/2020 3/1/2018 2/15/2020 7/8/2018 2/16/2020 9:28 8/20/2019 2/16/2020 12:44 1/1/2017 2/17/2020 0:10 9/25/2016 2/17/2020 7:54 10/15/2019   ... View more