topic Re: calculate difference in 2 dates based on 360 days year in SAS Programming

calculate difference in 2 dates based on 360 days year

BhararaTej — Tue, 08 Nov 2016 03:27:02 GMT

Hi,

I have a code that we are looking to automate which currently some part of it is in excel.

It is basically calculating difference in dates based on an excel function day360 which calculates difference in dates based on a 360 day year.

I am hoping to replicate this code in SAS and I know we can use intck to calculate difference in dates, but looking for suggestions/ inputs to calculate difference in dates based on a 360 day year in SAS.

Appreciate the help.

Tej

Re: calculate difference in 2 dates based on 360 days year

Reeza — Tue, 08 Nov 2016 03:35:57 GMT

It looks like the calculation is the number of months multiplied by 30 days.

You can use INTNX to move the date to the end/beginning/same of an interval as required.

Was the third parameter in Excel True or False?

Re: calculate difference in 2 dates based on 360 days year

PGStats — Tue, 08 Nov 2016 04:11:38 GMT

You can emulate the European method with:

day360 = intck("MONTH", date_a, date_b) * 30 + 
            min(30, day(date_b)) - min(30, day(date_a));

Re: calculate difference in 2 dates based on 360 days year

ChrisNZ — Tue, 08 Nov 2016 04:54:46 GMT

Like this?


proc fcmp outlib=WORK.FUNC.TEST;
  function days360(END, START);
    Y=intck('year',START, END);
    N=Y*360+intck('day',START,intnx('year',END,-Y,'s'));
    return (N);
  endsub;
run;

options cmplib=WORK.FUNC;
 
data _null_;
  END   = '07dec2016'd;
  START = '8nov2014'd;
  DAYS  = days360(END, START);
  putlog DAYS=;
run;

DAYS=749

Re: calculate difference in 2 dates based on 360 days year

Ksharp — Tue, 08 Nov 2016 06:28:53 GMT

You want calculate the number of years between two date ? Check function YRDIF(start,end,'30/360');