Path: utzoo!attcan!uunet!cs.utexas.edu!ntvaxb!mouse
From: mouse@vaxb.acs.unt.edu (Dhanapong Saengrussamee, University of North Texas)
Newsgroups: comp.sys.ibm.pc
Subject: Re: I need a date :) please help
Message-ID: <23446.261e0937@vaxb.acs.unt.edu>
Date: 7 Apr 90 15:37:27 GMT
References: <19500060@uxh.cso.uiuc.edu>
Lines: 30

In article <19500060@uxh.cso.uiuc.edu>, mead@uxh.cso.uiuc.edu writes:
> QUERY:  Does anyone know of *any* source for an intelligent algorythm
> for getting the day ('Monday, Tuesday, ...') from the date (4/3/90).
> My PC does it like lightning each time I issue the 'DATE' command, and
> if IBM can do it, anyone can - right? :)  Textbooks or whatever are
> fine, but please don't direct me to existing software unless it's PD
> source code (in BASIC, C, Pascal, or FORTRAN).  Thanks.
> 
> -alan mead : mead@uxh.cso.uiuc.edu

I assume that the program you try to write is for PC, right?

DOS interrupt $21 function $2A is what you need.
  Call with AH = $2A
  Return:  CX = year (1980 through 2099--don't know what will happen after
                      the year 2099 8^))
           DH = month (1 through 12)
           DL = day (1 through 31)
           AL = day of week (0 = Sunday, 1 = Monday)

Hope this help,
Mouse .o()~
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