For the benefit of all the folk on this list who're new to IBM mainframes,
and with apologies to the, "old folk" for stating what is to us so obvious
that it's like breathing, can I please point out that:
The Commercial IBM Mainframe Operating Systems (and, I believe Linux, but
I'm happy to be corrected on this one) are all DESIGNED to have the
hardware TOD Clock set to GMT, with a software timezone-offset being
applied by the operating system in order to derive, "Local Time".
Setting the system ("hardware/LPAR/TOD") clock to anything other than GMT
is incorrect. As with many, "incorrectnesses", the impact can vary from
zero to quite significant but at the very least be aware that doing this
is non-standard and has the potential to cause problems. Preferably, don't
do it - but if you choose to, at least make a conscious decision to walk
out of step with the standard, and don't do it just out of innocence /
ignorance (as I did for many years back in my callow youth).
Jeff
