Last week day before the date

[SASdevAnneMarie]

Hello Experts,

I have a question : if my date is, for example, '15Jan2021:0:0:0'dt, and I would like to find the last friday before this date, there is some function in SAS ?

Thank you very much !

[JosvanderVelden · Accepted solution]

Please run the code below and see if that works for you.

data work.have;
   input mydate:datetime15.;
datalines;
15Jan2020:0:0:0
15Jan2021:0:0:0
15Jan2022:0:0:0
15Jan2023:0:0:0
19Oct2023:0:0:0
20Oct2023:0:0:0
21Oct2023:0:0:0
;
run;
   
data want;
   set have;
   thisweekFriday = intnx('week.6', datepart(mydate), 0);
   lastweekFriday = intnx('week.6', datepart(mydate), -1);
   format mydate datetime18. thisweekFriday lastweekFriday date9.;
run;

[SASdevAnneMarie]

Thank you very much !

[PaigeMiller]

I am confused as the title and text do not agree. In one case you ask for last weekday, and in the other case you ask for last Friday. These are not the same. Which do you really want?

[SASdevAnneMarie]

Sorry, It is actually day (friday) of last week before the date.