Changing the timezone in your Linux VPS, or other Linux system, can be easily done via shell.
Log in to your server, or open a terminal/console on your desktop, and use the following command to setup your preferred timezone:
ln -sf /usr/share/zoneinfo/US/Central /etc/localtime
You can explore the folder to see available timezones:
lsĀ /usr/share/zoneinfo/
This should work in almost all Linux distributions, and it is also a good way to set the timezone for KVM VPS, Xen VPS, and other Linux VPS systems.