how to calculate # of hours withe datetime22. variable

[HitmonTran]

Hello,

I am trying to calculate duration of hours from start datetime to end datetime. The format of the variables are numeric datetime22.

data:

start_date_time	end_date_time
13JUN2019:15:41:00	21JUN2019:14:37:00
15MAR2022:02:28:00	16MAR2022:16:24:00

want

start_date_time	end_date_time	hours
13JUN2019:15:41:00	21JUN2019:14:37:00
15MAR2022:02:28:00	16MAR2022:16:24:00

[yabwon]

If your datetime variables are just a character text, here are two options:

data have1;
input (start_date_time	end_date_time) (:$22.);
cards;
13JUN2019:15:41:00	21JUN2019:14:37:00
15MAR2022:02:28:00	16MAR2022:16:24:00
;
run;
proc print;
run;

data want1;
  set have1;

  /* optioin 1 */
  hours1 = (input(end_date_time,datetime22.)
            -
            input(start_date_time,datetime22.)
           ) / 3600;



  /* optioin 2 */
  tmp = put((input(end_date_time,datetime22.)
            -
            input(start_date_time,datetime22.)
           ), time12.);

  hours2=input(scan(tmp,1,":"),best12.);
  minutes2=input(scan(tmp,2,":"),best12.);
  seconds2=input(scan(tmp,3,":"),best12.);
run;
proc print;
run;

If your variables are genuine (numeric) datetime variables here are three options:

data have;
input (start_date_time	end_date_time) (:datetime22.);
format start_date_time	end_date_time datetime22.;
cards;
13JUN2019:15:41:00	21JUN2019:14:37:00
15MAR2022:02:28:00	16MAR2022:16:24:00
;
run;
proc print;
run;

data want;
  set have;

  /* optioin 1 */
  hours1 = (end_date_time - start_date_time) / 3600;



  /* optioin 2 */
  tmp = put(end_date_time - start_date_time, time12.);

  hours2=input(scan(tmp,1,":"),best12.);
  minutes2=input(scan(tmp,2,":"),best12.);
  seconds2=input(scan(tmp,3,":"),best12.);


  /* optioin 3 */
  tmp2 = end_date_time - start_date_time;

  hours3=int(tmp2/3600);
  minutes3=int((tmp2-3600*hours3)/60);
  seconds3=tmp2 - 3600*hours3 - 60*minutes3;

run;
proc print;
run;

Bart

[Kurt_Bremser · Accepted solution]

hours = intck("hour",start_date_time,end_date_time,"c");