topic Re: Daylight Saving Time in Operating System - HP-UX

Daylight Saving Time

Sial_1 — Tue, 20 May 2008 14:51:06 GMT

Hi,

can someone help me, how to implement Daylight Saving Time in HP-UX 11i.

I think Pakistan is not in DST countries List. First time in Pakistan, Government of Pakistan plan to implement Daylight Saving Time (starting form 1st June 2008).

Re: Daylight Saving Time

James R. Ferguson — Tue, 20 May 2008 15:12:40 GMT

Hi:

If this has been officially established then there should be a patch coming for '/usr/lib/tztab'. You would find this in the ITRC Patch Database if you search for 'tztab'. At the moment, the latest patch I find (for 11.23, for example) is PHCO_37721.

Should you need to create your own, you can modify '/usr/lib/tztab' following the rules defined in the manpages for 'tztab'

It looks like the identifier of 'PKT' identifies Pakistan's current timezone :

http://home.tiscali.nl/~t876506/TZworld.html#asi

If you do (temporarily) create a modified 'tztab', be sure to make a copy of the current "offical" patched version. Plan to move it back over your modified copy when the patch becomes available. As I recall, the scripts run by 'swinstall' will detect a modifed file and not automatically replace it with the file provided by a patch.

Regards!

...JRF...

Re: Daylight Saving Time

Tim Nelson — Tue, 20 May 2008 16:15:30 GMT

I second James's suggestion. If there is no official patch out yet then just edit the tztab appropriately.

It is only a lookup table as to when the system is suppose to shift timezones.

The patch only has the updated tztab in it anyway.

Re: Daylight Saving Time

Dennis Handly — Tue, 20 May 2008 18:36:21 GMT

>First time in Pakistan, Government of Pakistan plan to implement Daylight Saving Time

To get an official patch, you need to follow the 3 steps I listed in this link:
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1224306