Data _Null_ ; Year = 1965 ; Month = 5 ; Day = 3 ;

FirstDay = IntnX( 'Month' , MDY( Month , Day , Year ) , 0 , 'B' ) ;

Put FirstDay DowName. ; Run ;

If Your nnot stuck to a Data Set but are using User defined macro variables the whole thing can be done in the Macro Facility:

Toby Dunn

To sensible men, every day is a day of reckoning. ~John W. Gardner

The important thing is this: To be able at any moment to sacrifice that which we are for what we could become. ~Charles DuBois

Don't get your knickers in a knot. Nothing is solved and it just makes you walk funny. ~Kathryn Carpenter

From: Westcotter <westcotter@YAHOO.COM> Reply-To: Westcotter <westcotter@YAHOO.COM> To: SAS-L@LISTSERV.UGA.EDU Subject: SAS date Date: Wed, 21 Mar 2007 11:45:23 -0700

Dear all,

Here is a question I would like to ask for your help.

One observation includes year (1965), month (5), and week of the month (which could be only 1, 2, 3, or 4).

I would like to know exact date inluding year, month, and the day (the first day of the week, such as Sunday, will be fine).

How can I do this?

Thanks so much.

Kangsheng

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