Timezone Updates...

[Matthew J. Roth]

Les Mikesell wrote:
> He probably wants to know how that relates to FC4 - i.e was an update 
> containing the change done before FC4 support stopped?
>
> Doing:
> zdump -v CST6CDT |grep 2007
> should show entries for March 11 if the update is already installed.
Gareth,

Les Mikesell has covered checking the systems to see if they are up to 
date.  I will tell you to update FC3 and FC4 systems.

First, you need to configure the machines to get updates from the Fedora 
Legacy repos.  This is covered in detail at:

http://www.fedoraproject.org/wiki/Legacy/YumFC3Detailed
http://www.fedoraproject.org/wiki/Legacy/YumFC4Detailed

My experience was that the main Fedora legacy servers were unavailable.  
Mirrors were required, including changing the "baseurl" entries in 
"/etc/yum.repos.d/fedora-legacy.repo".  A list of Fedora legacy mirrors 
is at:

http://fedoralegacy.org/download/fedoralegacy-mirrors.php

Once this is done, updating the timezone data is as simple as:

# yum update tzdata

For reference, this updated my FC3 machines to "tzdata-2006a-2.fc3.1" 
and my FC4 machines were already at "tzdata-2006g-1.fc4" and did not 
have an update available.

Once the tzdata update is complete, it can be verified as follows:

# zdump -v US/Eastern | grep 2007
US/Eastern  Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST 
isdst=0 gmtoff=-18000
US/Eastern  Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT 
isdst=1 gmtoff=-14400
US/Eastern  Sun Nov  4 05:59:59 2007 UTC = Sun Nov  4 01:59:59 2007 EDT 
isdst=1 gmtoff=-14400
US/Eastern  Sun Nov  4 06:00:00 2007 UTC = Sun Nov  4 01:00:00 2007 EST 
isdst=0 gmtoff=-18000

Note that the DST rules correctly state that it starts on March 11th and 
ends on November 4th.  Something is wrong if they still say April 1st to 
October 28th.

I hope this was helpful,

Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer