I used SET TIMEZONE forward and backwards for many years on a Z9 at z/OS 1.13 for a number of years
> -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On > Behalf Of Watkins, Philip S. > Sent: Friday, October 24, 2025 12:41 PM > To: [email protected] > Subject: Time Change Delima > > Running an unsupported operating system 1.13 on a Z9 processor. No > SYSPLEX timer installed. > > > We are coming up on the time falling back the first Sunday in November. We > have a slight problem. > We are not able to shutdown and IPL the system to wait an hour but need to > change the time. We are thinking possibly that issuing the TIMEZONE > W.05.00.00 or set CLOCK=hh.mm.ss commands should do the trick. > > We do plan on shutting down all online systems, logger files along with SMF. > Not sure about SYSLOG or how OMVS will handle the situation. > > Any suggestions or gotchas we might be missing? > > > > > > > > > > > Philip S Watkins > > Senior Systems Programmer > > Prince George's County, Maryland > > Office of Information Technology > > 9201 Basil Court/ Room B8 > > Largo, MD 20774 > > Voice: 301-883-7189 > > E-Mail: [email protected]<mailto:[email protected]> > > > > ________________________________ > This E-mail and any of its attachments may contain Prince George's County > Government or Prince George's County 7th Judicial Circuit Court proprietary > information or Protected Health Information, which is privileged and > confidential. This E-mail is intended solely for the use of the individual or entity > to which it is addressed. If you are not the intended recipient of this E-mail, > you are hereby notified that any dissemination, distribution, copying, or > action taken in relation to the contents of and attachments to this E-mail is > strictly prohibited by federal law and may expose you to civil and/or criminal > penalties. If you have received this E-mail in error, please notify the sender > immediately and permanently delete the original and any copy of this E-mail > and any printout. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
