Provided by: libc6_2.3.6-0ubuntu20_i386 bug


       tzconfig - set the local timezone




       This  manual  page explains how you can use the tzconfig utility to set
       the local timezone. This is necessary to let your system know about the
       difference  between  system  time  and local time (the time in the real
       world). It is also necessary to make your  system  behave  nicely  when
       your location uses Daylight Savings Time.

       A valid system time together with the correct local time zone will give
       you  best  performance  and  highest  reliability.  It  is   especially
       important  in  a network environment, where even small time differences
       can make a mirror refetch a whole ftp site, or  where  time  stamps  on
       external file systems are used.

       tzconfig  is  called  without  any  parameters from the shell. First it
       presents the current setting and asks for verification to change it.

       You may press Ctrl-C to interrupt the script at any time.

       After you made your choice, tzconfig will try to  change  the  timezone
       for  you.  See  the  Internals section below for technical details. You
       must have root privileges  to  actually  change  anything.  Please  use
       tzselect(1)  as  a user space command to just look at the timezones. It
       will print the local time in any timezone recognized by the system.


       What  timezone  is  correct  for  your  system?  It  depends   on   the
       geographical  location of the machine.  Getting the correct location is
       important, but the system must also know how  your  hardware  clock  is
       set.  Most  DOS based PCs set their hardware clock on Local Time, while
       most UNIX systems set their hardware clock to UTC.

       The Debian GNU/Linux system gains its knowledge of  this  setting  from
       the file /etc/default/rcS.  This file contains either the line UTC=yes,
       which indicates that the hardware clock is set to UTC, or  it  contains
       the  line  UTC=no,  which  declares  the hardware clock is set to Local
       Time. If these setting are correct, and the hardware clock is truly set
       as indicated, then configuring the proper timezone for the machine will
       cause the proper date and time to be displayed. If these  are  not  set
       correctly,   the  the  reported  time  will  be  quite  incorrect.  See
       hwclock(8) for more details on this topic.


       The work done by tzconfig is actually pretty simple.  It  just  updates
       the  link  /etc/localtime to point to the correct timezone installed in

       There is  nothing  wrong  with  doing  this  manually.  However,  using
       tzconfig you don’t have to remember the path to the timezones.


       /etc/timezone  /etc/localtime  /usr/share/zoneinfo


       hwclock(8) tzselect(1) rcS(5)


       Copyright  1998  Marcus Brinkmann <>  Edits Copyright
       1998 Dale Scheetz <>

       Please see nroff source for legal notice.