Some tome you want to change Timezone in VOS3000 after VOS3000 installation For Example I want to change my Time zone to Asia/Shanghai
easy way to change time zone on centos run the system command
and select your timezone
click OK and reboot the server.
if system-config-date command is not working then install this tool
# yum install system-config-date
manual way to do this is follow the below steps.
Reinstall Timezone database
# yum -y reinstall tzdata
Install NTP Client to accurate time according to time zone
# yum -y install ntp # chkconfig ntpd on # service ntpd restart