System Timezone

Change Timezone on CentOS/RHEL 7/6/5

#   date 041712132018        [ 04 month-17 date-12 hour-13 minute-2018 year ]

[root@mail ~]# date

Tue Apr 17 12:31:57 BDT 2018

First check current timezone used by your system using date command.

[root@tecadmin ~]# date  Fri Jan 2 05:10:00 EST 2015

As per above example our system timezone is set to EST.

Change TimeZone in CentOS/RHEL 7

In CentOS/RHEL 7 we use timedatectl command to change current timezone of system. First use following command to list all timezones

# timedatectl list-timezones

Now use following command to change timezone to America/Los_Angeles.

# timedatectl set-timezone America/Los_Angeles

Change TimeZone in CentOS/RHEL 6/5

To change timezone on CentOS/RHEL 6/5 we can simply link /etc/localtime file with correct timezone configuration file. For example we are setting America/Los_Angeles as our local system timezone.

# mv /etc/localtime /root/localtime.old # ln -s /usr/share/zoneinfo/America/Los_Angeles /etc/localtime

Your timezone has been changed successfully. Lets check timezone again.

[root@tecadmin ~]# date  Fri Jan 2 14:10:54 IST 2015

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Centos 6

Set System Timezone

The example for setting time-zone of your system.

[root@dlp ~]# vi /etc/sysconfig/clock

# change to your location

ZONE="Asia/Tokyo"

[root@dlp ~]# source /etc/sysconfig/clock # reload

# copy your timezone file under the "/usr/share/zoneinfo" like follows

[root@dlp ~]# cp -p /usr/share/zoneinfo/Asia/Tokyo /etc/localtime 

cp: overwrite `/etc/localtime'? y

Centos 7

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