How To Change Time Zone in CentOS 8 / RHEL 8

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Change Time Zone in CentOS 8
Change Time Zone in CentOS 8

The time zone is often set during the installation of an operating system. There are some possibilities you might have chosen the wrong time zone or you want to change the time zone post the installation of an operating system.

In either case, this post will help you to change the time zone in CentOS 8 / RHEL 8.

Change Time zone in CentOS 8 / RHEL 8

We can change the time zone in two ways,

1. Using timedatectl command

2. Using /etc/localtime file

Let us get straight into the topic.

1. Using timedatectl command

The timedatectl command makes it easier for us to change the time zone in CentOS 8 / RHEL 8.

Now, first, let’s check the date with the date command.

date

Output:

Mon Dec 2 21:53:05 EST 2019

You can see that my system has been configured with Eastern Standard Time (EST).

Use the following command to list all time zones.

timedatectl list-timezones

Output:

Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
.     .     .
.     .     .

Pacific/Saipan
Pacific/Tahiti
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
UTC

You can filter the output based on the city name. Chicago falls under Central Standard Time (CST).

timedatectl list-timezones | grep -i chicago

Output:

America/Chicago

Now, I will set the system time zone as Central Standard Time (CST) by using America/Chicago.

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timedatectl set-timezone America/Chicago

Verify the new time zone using the date command.

date

Output:

Mon Dec  2 21:00:37 CST 2019

2. Using /etc/localtime file

In this method, we will set the system time zone from EST to CST. Check the current time zone using the date command.

date

Output:

Mon Dec  2 22:01:43 EST 2019

You can see that my system has been configured with Eastern Standard Time (EST).

In this method, we will use /etc/localtime file to set the time zone for the system. The /etc/localtime file is a link to the original time zone file found under the/usr/share/zoneinfo directory.

ls -al /etc/localtime

Output:

lrwxrwxrwx. 1 root root 36 Dec  2 22:01 /etc/localtime -> /usr/share/zoneinfo/America/New_York

The /usr/share/zoneinfo/ directory contains all the time zones. Beneath that you can find directories specific to country or zone. For example, the /usr/share/zoneinfo/America/ directory contains American time zones.

ls /usr/share/zoneinfo/America/

Output:

Adak            Campo_Grande   Eirunepe      Iqaluit        Merida          Porto_Acre     St_Johns
Anchorage       Cancun         El_Salvador   Jamaica        Metlakatla      Port_of_Spain  St_Kitts
Anguilla        Caracas        Ensenada      Jujuy          Mexico_City     Porto_Velho    St_Lucia
Antigua         Catamarca      Fortaleza     Juneau         Miquelon        Puerto_Rico    St_Thomas
Araguaina       Cayenne        Fort_Nelson   Kentucky       Moncton         Punta_Arenas   St_Vincent
Argentina       Cayman         Fort_Wayne    Knox_IN        Monterrey       Rainy_River    Swift_Current
Aruba           Chicago        Glace_Bay     Kralendijk     Montevideo      Rankin_Inlet   Tegucigalpa
Asuncion        Chihuahua      Godthab       La_Paz         Montreal        Recife         Thule
Atikokan        Coral_Harbour  Goose_Bay     Lima           Montserrat      Regina         Thunder_Bay
Atka            Cordoba        Grand_Turk    Los_Angeles    Nassau          Resolute       Tijuana
Bahia           Costa_Rica     Grenada       Louisville     New_York        Rio_Branco     Toronto
Bahia_Banderas  Creston        Guadeloupe    Lower_Princes  Nipigon         Rosario        Tortola
Barbados        Cuiaba         Guatemala     Maceio         Nome            Santa_Isabel   Vancouver
Belem           Curacao        Guayaquil     Managua        Noronha         Santarem       Virgin
Belize          Danmarkshavn   Guyana        Manaus         North_Dakota    Santiago       Whitehorse
Blanc-Sablon    Dawson         Halifax       Marigot        Ojinaga         Santo_Domingo  Winnipeg
Boa_Vista       Dawson_Creek   Havana        Martinique     Panama          Sao_Paulo      Yakutat
Bogota          Denver         Hermosillo    Matamoros      Pangnirtung     Scoresbysund   Yellowknife
Boise           Detroit        Indiana       Mazatlan       Paramaribo      Shiprock
Buenos_Aires    Dominica       Indianapolis  Mendoza        Phoenix         Sitka
Cambridge_Bay   Edmonton       Inuvik        Menominee      Port-au-Prince  St_Barthelemy

Now, create a link with the desired time zone. In my case, for Central Standard Time (CST) timezone.

ln -sf /usr/share/zoneinfo/US/Eastern /etc/localtime

OR

ln -sf /usr/share/zoneinfo/America/Chicago /etc/localtime

Here, you can link either the City or Zone with /etc/localtime. Chicago falls under Central Standard Time (CST).

Verify the time zone using the date command.

date

Output:

Mon Dec  2 21:04:07 CST 2019

Conclusion

That’s All. I hope this post helped you to change time zone in CentOS 8 / RHEL 8. Please share your thoughts in the comments section.

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