https://communities.sas.com/t5/SAS-Programming/How-to-convert-date-to-is8601dt/m-p/602681#M174511 Hello!<BR />I've a date 11/jul/2012<BR /><BR />So I'm trying to convert this date to iso format.<BR />I'm running the below program<BR /><BR />Data new;<BR />Set old;<BR />DD=put(input(DD,best.),is8601dt.);<BR />Run;<BR /><BR />But I didn't get the out put,and the log shows invalid argument function input.<BR /><BR />Could you please solve this query..<BR /><BR />Thank you! Fri, 08 Nov 2019 07:33:42 GMT sasuser123123 2019-11-08T07:33:42Z https://communities.sas.com/t5/SAS-Programming/How-to-convert-date-to-is8601dt/m-p/602681#M174511 Hello!<BR />I've a date 11/jul/2012<BR /><BR />So I'm trying to convert this date to iso format.<BR />I'm running the below program<BR /><BR />Data new;<BR />Set old;<BR />DD=put(input(DD,best.),is8601dt.);<BR />Run;<BR /><BR />But I didn't get the out put,and the log shows invalid argument function input.<BR /><BR />Could you please solve this query..<BR /><BR />Thank you! Fri, 08 Nov 2019 07:33:42 GMT https://communities.sas.com/t5/SAS-Programming/How-to-convert-date-to-is8601dt/m-p/602681#M174511 sasuser123123 2019-11-08T07:33:42Z https://communities.sas.com/t5/SAS-Programming/How-to-convert-date-to-is8601dt/m-p/602685#M174515 <P>This input string is clearly not a number, so the BEST. informat will fail.</P> <P>Try DATE11. instead.</P> <P>And the correct name of the ISO date format is either E8601DA10. (with hyphens) or B8601DA8. (without hyphens).</P> <P>Maxim 1: Read the Documentation.</P> Fri, 08 Nov 2019 07:41:15 GMT https://communities.sas.com/t5/SAS-Programming/How-to-convert-date-to-is8601dt/m-p/602685#M174515 Kurt_Bremser 2019-11-08T07:41:15Z