RE: Y2.1K Compliance

     Peter, I think windowing is only used with 6 digit dates. CYYMMDD 
     dates are not windowed because the C portion identifies the 
     specific century. YYMMDD dates roll over every 100 years. CYYMMDD 
     roll over every 1000 years. 
     
     eric.delong@pmsi-services.com


______________________________ Reply Separator
_________________________________
Subject: Re: Y2.1K Compliance
Author:  "Peter Dow" <SMTP:pcdow@MailAndNews.com> at EXCHANGE
Date:    11/28/00 10:20 PM


Hi Jim,
     
Of course, if they do that, anyone who's using cyymmdd to store dates may 
have a problem at that time. If you have a date stored as 0290101 and the 
window moves up, what does that date represent? Currently it would be 
1929-01-01, but if the window moved, the year is below the window for the 
20th century. Suddenly the data is invalid?
     
Regards,
Peter Dow
Dow Software Services, Inc.
909 425-0194 voice
909 425-0196 fax
     
     
----- Original Message -----
From: "Jim Langston" <jimlangston@conexfreight.com> 
To: <RPG400-L@midrange.com>
Sent: Tuesday, November 28, 2000 10:28 AM 
Subject: Re: Y2.1K Compliance
     
     
> My assumption is that IBM in later versions of the OS will move the window

> around to reflect the current time period.  So though the window is 
currently
> 1928 to 2071, around 2040 or so IBM should change it to 1980 to 2110. 
> Programs should not need changing.
>
> Although this does mean your current OS version is going to become 
obsolete.
>
> I guess we will have to upgrade past V3R7M0 at that point <grin> 
>
> Regards,
>
> Jim Langston
>
> Peter Dow wrote:
> >
> > Just to add confusion to the issue, AS400 command parameters with type 
*DATE
> > have the following help text:
> >
> > ---
> > The parameter value is a character string that
> > represents a date.  When entering the command, the 
> > year may be specified with either 2 digits or 4
> > digits.
> >
> > If a 2-digit year is specified, the date is
> > assumed to be in the range of January 1, 1940 through December 31, 2039.

> >
> > If a 4-digit year is specified,
> > the date may be in the range of August 24, 1928 through May 9, 2071. 
> >
> > When it is passed to the command processing program, it is always passed

in
> > the format Cyymmdd, where C = century, yy = year, mm = month, and dd = 
day.
> > The century digit is set to 0 (zero) for years 19xx, and it is set to 1 
> > (one) for years 20xx.
> >
> > ---
> >
> > Note that even though you can specify a 4-digit year, you may not 
specify a
> > date past 05/09/2071.
> >
> > Looks like commands with *DATE type parameters aren't Y2.1K compliant. 
> >
> > Regards,
> > Peter Dow
> > Dow Software Services, Inc.
> > 909 425-0194 voice
> > 909 425-0196 fax
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