topic convert a SAS DATETIME22.3 value into a SAS date value in SAS Programming

convert a SAS DATETIME22.3 value into a SAS date value

rfortin — Fri, 10 Feb 2017 14:35:53 GMT

How do I convert a DATETIME22.3 value into a SAS date value (number of days since January 1 1960)? I am running PC SAS 9.3.

Re: convert a SAS DATETIME22.3 value into a SAS date value

Kurt_Bremser — Fri, 10 Feb 2017 14:40:07 GMT

The function to extract a date from a datetime is datepart().

So you either do (in a data step)

date_new = datepart(datetimeval);
format date_new yymmdd10.;

or (to replace the original variable)

dateval = datepart(dateval);
format dateval yymmdd10.;

Although I prefer version 1, as it also allows you to set a length for the new variable (date values can be stored in 4 bytes, datetime need all 8).

Re: convert a SAS DATETIME22.3 value into a SAS date value

rfortin — Sat, 11 Feb 2017 16:47:58 GMT

Thanks for your help. I have copied the code that worked below. rfortin

format newdatadate mmddyy6.; newdatadate = datepart(datadate); d = day(newdatadate); m = month(newdatadate); y = year(newdatadate); sasdate = mdy(m,d,y);

Re: convert a SAS DATETIME22.3 value into a SAS date value

Kurt_Bremser — Sat, 11 Feb 2017 16:52:56 GMT

Glad it worked. On closer inspection, you will find that newdatadate and sasdate contain the same value (with different formatting).