Change timezone in Linux ( centos) :
Step 1: Check your current date time
This step is not needed but its helpful to know what time you have currently.
Step 2: Make backup copy of your current timezone file for safety:
$ cp /etc/localtime /etc/localtime-backup
Step 3: Go to timezone folder and find correct time zone file. Let set the timezone to Newyork for this example.
$ cd /usr/share/zoneinfo
Look for country America ( It will be a folder):
$ cd /usr/share/zoneinfo/America
you will find the file call New_york which is timezone file for new york . Now copy that file to local time.
$ cp /usr/share/zoneinfo/America/New_york /etc/localtime
Step 4: Your time zone is now set. You can check by typing date command to see new date time information.
Note: Many server prefer to setup UTC time which can be set with same method as mentioned above. UTC date time file is located in
Synchronization of Date time:
Date time is synchronize by NTP module of Linux, which is generally installed in all Linux distribution but if it is missing then it can be install by yum.
$ yum install ntp