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# Time interval in days

Hi All,

Just trying to calculate number of days between the following two dates. Looking forward for your advise please?

Regards,

Naeem

11DEC2013:20:52:39.000

21NOV2013:04:45:43.000

Accepted Solutions
Solution
‎06-18-2014 11:40 AM
Super Contributor
Posts: 275

## Re: Time interval in days

data _null_;
date1='11DEC2013:20:52:39.000'dt;
date2='21NOV2013:04:45:43.000'dt;
day1=intck('second',date2,date1)/86400;

day2=round(day1);

day3=floor(day1);

put day1 day2 day3;
run;

All Replies
Solution
‎06-18-2014 11:40 AM
Super Contributor
Posts: 275

## Re: Time interval in days

data _null_;
date1='11DEC2013:20:52:39.000'dt;
date2='21NOV2013:04:45:43.000'dt;
day1=intck('second',date2,date1)/86400;

day2=round(day1);

day3=floor(day1);

put day1 day2 day3;
run;

Super Contributor
Posts: 644

## Re: Time interval in days

The day1 calculation is no different from (date2 - date1)/86400 ;

I would prefer to use 'dtdate' instead of 'second':

day1=intck('dtdate',date2,date1) ;

'dtdate' is measuring days in datetime, ie seconds.

Richard

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