Weird IIgs Rom 01 bug

["Jayson Smith" <nospamratguyspambegone@nospamplease.bellsouth.ihatespam.net>]

Hi,
I've been playing around with a program I have which lets blind people
adjust control panel settings without having to go into the desk accessory.
I was fiddling around with the clock section, doing some peeking, poking and
setting of the clock and found some very weird behavior so I wrote a clock
print/set program to discover exactly what happens.
It seems that at least on the Rom 01 GS, at exactly 06:28:16 on 02/06/2040
the time becomes 00:00:00 on 01/01/1904.  This happens no matter if you set
the clock to a date/time past that mark or if you set it a few seconds
before and let it pass that time naturally.  Quite literally, one second
it's 06:28:15 on 02/06/2040 and the next second it's 00:00:00 on 01/01/1904.
I think this might happen once or twice more between then and the year 2155,
the highest year the clock format could handle.  Setting the date to
12/31/2155 and the time to 23:59:59 yielded 23:59:59 on 07/27/1976 or
something like that.
Now I seriously doubt that there will be many IIgs's still functional in the
year 2040 but I just wanted to let people know about this weirdness and see
if anybody has any thoughts about what might be causing it.
This is untested on a Rom 00 or 03 as I don't have those machines.  If
anybody wants, I can send the Prodos Basic program I've been using for my
experimentations.
Jayson.