• Subject: Re: Determine Week in Year
  • From: "James W. Kilgore" <eMail@xxxxxxxxxxxxxxxxxxx>
  • Date: Wed, 01 Nov 2000 22:42:29 -0800
  • Organization: Progressive Data Systems, Inc.

Richard,

This is not workable.  ISO standards specify that week #1 is the first
week that contains 4 or more days.  Now without getting into which day
of the week you may consider the first day (Sunday like the more popular
calendars or Monday like the rest of the calendars) You can have week #1
have days 1,2,3,4 and week #2 has days 5,6,7,8,9,10,11 so in your
example day 14 is in week #3, not week #2.

Richard Reeve wrote:
> 
> Scott,
> 
>      I believe that if you were to convert the date to
> julian and then divided the days (the last three
> positions of the julian date) by 7 you would get the
> week that the date fell in.
> 
>      For example for julian date 00014 you would
> divide 014 by 7 and find that the week was 2.
> 
>      Hope this helps.
>
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