time change this Sat.

[Erik Voelker_1]

How can I find out the exact time that my HPUX 9000 servers will fallback one hour during the daylight savings weekend?

[Christopher Caldwell · Accepted solution]

It's all cryptically spelled out in tztab (man tztab).

[A. Clay Stephenson]

It depends upons the 'rules' entry in /usr/lib/tztab.

Man 5 environ first and look at the 'TZ' entry and then man tztab. In any event, the answer to your question is dependent upon your particular TZ setting but the tztab will then give you the answer.

Clay

[Roger Baptiste]

hi,

/usr/lib/tztab contains
the details of the daylight
savings change.

the first two fields specify
the time.
the next four fields of
each entry give the details
on figuring out the date.

man 4 tztab gives the gory details.

cheers!

[Patrick Wallek]

Check out TKB article KBAN00000732. This explains time zones quite well.

[Patrick Wallek]

Here's another TKB document that probably explains things better than the first one I posted. Doc ID: KBRC00000190

http://us-support3.external.hp.com/cki/bin/doc.pl/sid=6215f80c18e07ea15e/screen=ckiDisplayDocument?docId=200000053745977

[James R. Ferguson]

Hi Erik:

Look at '/usr/lib/tztab' and match your TZ environmental variable (see /etc/TIMEZONE) to the proper entry. 'man 4 tztab' describes the interpretation of these fields. To understand how 'cron' handles the daylight time change, see the man pages for 'cron' (1M).

Regards!

...JRF...