Setting timezones on Linux

NTPd

Install ntpd

yum install ntpd

Stop server

service ntpd stop

Update server

ntpdate us.pool.ntp.org

Sync hardware clock

hwclock -systohc

Check localtime

more /etc/localtime

Replace localtime with correct location

mv /etc/localtime /etc/localtime.bak
ln -s /usr/share/zoneinfo/GB /etc/localtime

Restart ntpd

service ntpd start

Alternatives

$ tzselect