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Many Unix systems will have problems in the upcoming decades:

http://en.wikipedia.org/wiki/Year_2038_problem

"The Year 2038 problem is an issue for computing and data storage situations in which time values are stored or calculated as a signed 32-bit integer, and this number is interpreted as the number of seconds since 00:00:00 UTC on 1 January 1970 ("the epoch"). <snip> Most 32-bit Unix-like systems store and manipulate time in this "Unix time" format, so the year 2038 problem is sometimes referred to as the "Unix Millennium Bug" by association."

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Dan
Sent: Wednesday, April 22, 2015 2:13 PM
To: Midrange Systems Technical Discussion
Subject: Y2K39

In another thread, I am seeking advice on finding an error related to a date past 2039, given the system's 1940-2039 2-digit year "window".

Someone posted a comment "Y2K39 :-)", and I have to wonder, are we going to see Y2K-like projects all over again because of shortsighted fixes made back in the 1990's that made no changes to fields using 2-digit years?
Because, of course, there was no way that any of these applications would be running in another 40 years, right? As if we hadn't already learned our lesson with Y2K. But I digress.

Is there a chance IBM will shift that window to something like 1960-2059 at some point in the future? I've thought there might be a system value that would allow each shop to customize this window. But I can see where that would be problematic as well.

Is the Power i the only system affected by the 1940-2039 2-digit year "window"?

- Dan
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