LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (October 2007, week 3)Back to main SAS-L pageJoin or leave SAS-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:   Sun, 21 Oct 2007 12:32:37 -0400
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: first business day of current month

On Thu, 18 Oct 2007 09:05:41 -0700, BJMurphy <murphy.ben@GMAIL.COM> wrote:

>Hi All, > >I want to figure out whether today is the first business day of the >month in my code so that if I run the job every day, it automatically >handles certain tasks on the first business day of the month. Assume >that weekends and US federal/bank holidays are the only non-business >days. I have this code that works within a data step and takes a SAS >date variable (date) and determines if it is a holiday or not: > > mmdd = substr(put(date,mmddyy6.),1,4); > if (weekday(date) in (1,7)) then date_type = 'w'; /* weekend */ > else if > (mmdd in ('0101','0704','1111','1225')) or > (weekday(date) = 2 and > ((mmdd in ('0102','0705','1112','1226') or > '0115' <= mmdd <= '0121' or > '0215' <= mmdd <= '0221' or > '0525' <= mmdd <= '0531' or > '0901' <= mmdd <= '0907' or > '1008' <= mmdd <= '1014'))) or > (weekday(date) = 5 and '1122' <= mmdd <= '1128') > then date_type = 'h'; /* holiday */ > else date_type = 'b'; /* business day */ > >I can't decide the best way to figure out whether today was the first >business day or not. It seems like I could either populate a data set >with the last 31 days and test each one in succession, setting this >date_type appropriately, but I feel like this sort of inelegant brute >force method has some superior alternative. > >Any suggestions would be great. > >Thanks, >Ben

Loop through the days from say 1 Jan. 1900 to 31 December 2099 (or some other interval which is assuredly a superset of your actual days of interest) and populate a data set with yes/no flags indicating whether each is or is not first business day. Create a format from this table.


Back to: Top of message | Previous page | Main SAS-L page