Timezone
Time zones are special settings, which are used to change Universal Time Clock (UTC) to a local time.
What we need is to install a tzdata package.
# poldek -u tzdata
Now edit the /etc/sysconfig/timezone file.
TIMEZONE="Europe/Warsaw"
Time zones can be found in /usr/share/zoneinfo folder.
To apply changes - restart a timezone service
# service timezone restart