How To Change Timezone on a CentOS 6 and 7 Easily


You can easily change timezone in CentOS Linux using the following methods.
CentOS timezone config files and directories

/usr/share/zoneinfo/ – The system timezone directory contains the files as per timezone name. For example, the file /usr/share/zoneinfo/America/New_York represents time zone for New York.
/etc/localtime – It is a symlink to the file localtime or to the correct timezone file in the system located in /usr/share/zoneinfo/ directory.
How do I see the current time zone?

Type the date command or the ls command:
$ date
$ ls -l /etc/localtime

 

To find list of all available time zones, run:
# timedatectl list-timezones
##*** Grep possible Asian timezones ***##
# timedatectl list-timezones | grep Asia

Sample outputs:

Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
….
..
America/Dawson
America/Dawson_Creek
America/Denver
America/Detroit
America/Dominica
America/Edmonton
America/Eirunepe
America/El_Salvador
America/Fortaleza
America/Glace_Bay
….
..
Pacific/Saipan
Pacific/Tahiti
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
The syntax is as follows to set timezone and need to run as root user:

# timedatectl set-timezone time_zone
In this example, set timezone to America/Chicago

# timedatectl set-timezone America/Chicago
Verify new settings by typing the following two commands:
# date
# ls -l /etc/localtime
Change the current timezone in CentOS 6 and older

Type the following commands as root:

cp /etc/localtime /root/old.timezone
rm /etc/localtime
ln -s /usr/share/zoneinfo/America/Chicago /etc/localtime
Verify new settings by typing the following two commands:

date
ls -l /etc/localtime

 

source Knowledge : https://www.cyberciti.biz/faq/centos-linux-6-7-changing-timezone-command-line/

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