topic Re: Timezone offset in Operating System - OpenVMS

Timezone offset

Ian Derringer — Fri, 29 Jul 2005 15:24:21 GMT

Hi,
Where can I check if my timezone offset is on the target?

Thank you in advance.

Ian

Re: Timezone offset

Robert Gezelter — Fri, 29 Jul 2005 15:46:36 GMT

Ian,

What version of OpenVMS are you running?

A good starting point is the SYS$TIMEZONE_* logical names (OpenVMS 8.2).

- Bob Gezelter, http://www.rlgsc.com

Re: Timezone offset

David Jones_21 — Fri, 29 Jul 2005 23:45:46 GMT

Anybody have new timezone files yet to reflect the new law?

Re: Timezone offset

Volker Halle — Sat, 30 Jul 2005 01:29:43 GMT

Ian,

$ SHOW LOG SYS$TIME* shows you the OpenVMS timezone-related parameters.

$ TYPE/TAIL SYS$STARTUP:*$UTC_STARTUP.COM (* = either UTC or DTSS) shows you the command, which sets up your timezone information during boot.

You can correct all time-zone related information by using @SYS$MANAGER:UTC$TIME_SETUP.COM

The OpenVMS FAQ has a chapter on this:

4.3 Managing Timezones, Timekeeping, UTC, and Daylight Savings?

http://h71000.www7.hp.com/faq/vmsfaq.txt

If your local timezone rules have changed, you could manually define a correct timezone rule (also explained in the FAQ).

Please note that timezone handling has changed a lot with various versions of OpenVMS, so some of it depends on the VMS version you're running and whether your're running DTSS or not.

Volker.

Re: Timezone offset

Jan van den Ende — Sat, 30 Jul 2005 04:58:27 GMT

@David:

Care to explain "the new law"?

Proost.

Have one on me.

jpe

Re: Timezone offset

David Jones_21 — Sat, 30 Jul 2005 08:39:10 GMT

Please excuse my provincialism, part of a bill just passed yesterday by the U.S. congress extends daylight saving time by 6 weeks.

Re: Timezone offset

Ian Derringer — Sat, 30 Jul 2005 08:56:29 GMT

We're currently running on 7.3-2

Ian

Re: Timezone offset

Ian Derringer — Tue, 02 Aug 2005 00:07:04 GMT

I checked and modified according to these responses and now I'm 4 hours faster. I selected CST for the timezone. Where do I go from here?

Thanks,
Ian

Re: Timezone offset

Volker Halle — Tue, 02 Aug 2005 01:01:01 GMT

Ian,

if SHOW TIME shows the wrong time in your system, you will need to correct this. There are various ways to do this. You may need to take into account, how your applications or time-released jobs would react to a sudden change in system time.

@SYS$MANAGER:UTC$TIME_SETUP allows you to modify the system time by answering Y to the following question:

Do you wish to modify the local system time [N]:

then you can enter a time offset to be added to local system time:

Enter the time adjustment value:

You could also boot conversationally and temporarily set the system parameter SETTIME = 1, which will cause OpenVMS to prompt you for entering the system time:

>>> b -fl ,1
SYSGEN> set WRITESYSPARAMS 0
SYSGEN> set SETTIME 1
SYSGEN> C

Then enter the correct system time after being prompted.

You could also simply change the time in the running system with the $ SET TIME=hh:mm:ss command.

Volker.