Date:         Fri, 15 Dec 2006 22:18:14 -0500
Reply-To:     "Howard Schreier <hs AT dc-sug DOT org>" <nospam@HOWLES.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Howard Schreier <hs AT dc-sug DOT org>" <nospam@HOWLES.COM>
Subject:      Re: How to calculate time difference

On Fri, 15 Dec 2006 08:38:35 -0800, Suthakar Iyer <suthakariyer@YAHOO.COM>
wrote:

>Hi,
>  Time1 is a Character  variable with the format   29:22:41
>  Time2  is a  Numeric   variable  with the format  32.55
>
>  If the time1 is different from time2 by more than 0.5 hrs , I need to
flag them or identitfy them.
>
>  Thanks for the help in advance.
>
>  Suthakar

Here's a solution that is fully abstract in that it does not require
knowledge of how SAS represents times internally.

   data _null_;
   time1 = '29:22:41';
   time2 = 32.55;
   flag =  abs(input(time1,time8.) - hms(time2,0,0) ) > hms(0.5,0,0);
   put flag=;
   run;

There are advantages to using SAS date and time variables throughout. In
this case the assignment statement would simplify to

   flag =  abs(time1 - time2) > hms(0.5,0,0);