How to set the Daylight Saving Time (DST) OFF

I have a problem with the time so I need to set the DST to be OFF. is anybody can show me how to set the DST to be OFF?

?
man tztab

Ive seen patches... ( PHCO_34669...)
HPUX 11.23 : PHCO_36098 for tztab.

what I have to do with this patch (PHCO_34669....) ?
could you please show the step what I have to do?

If you do not want daylight time - just change the TZ setting in /etc/TIMEZONE:
say you have TZ=MST7MDT change it to TZ=MST7

But I think vbe is right - your tztab setting may be wrong. This file determines the day of the year when daylight time turns on/off.

Can this be of some interest?
Hewlett-Packard Co.

I just had another thought. Maybe the HP UX box was set up in the US then moved somewhere else. The US just shifted to standard time Sunday November 2.

What time zone are you in? The real name - not PDQ or BEF Sometimes those are not what gets used in /lib/tztab.

Actually I'm in Jakarta (it is GMT+7).
So, I have to change the tztab setting and edit the /etc/TIMEZONE ?
But what tztab setting I have to change ?
note : The HPUX version is HPUX 11i

Try:

# /sbin/set_parms timezone

Now, the TZ setting in /etc/TIMEZONE is TZ=PST-8PDT.

It should be TZ=JAV7.

i didn't get TZ=JAV7 explaination in internet. what is it means?
How about TZ=GMT?
To change the /etc/TIMEZONE is using vi editor?

It is the 7 that counts, not the name. Try this if you do not know your standard timezone name:

grep -e 'JT' -e 'JAVT' /lib/tztab

If you get a hit - a timezone using the two standard names for your timezone -
then use one of them. I do not know your timezone name. If you don't know, what does a Windows box show you when you click on the time in the tray (the bottom right hand side usually)? Beyond this I simply cannot help you.

In order for tztab to come into play the timezone you pick must exist in the tztab file, and spelled exactly the way you put it in the TZ variable.

read the man page for tzset

Yes use vi to edit the /etc/TIMEZONE file.