How To Change Timezone on CentOS 7

How To Change Timezone on CentOS 7

In this tutorial I will show you, how to change Timezone on CentOS 7 server.

timedatectl is a new feature on RHEL7. It may be used to query and change the system clock and its settings. Follow the below steps to change the timezone to IST (India). (Execute the below commands as root user).

1. List all the available timezones using the below command. You will get a long list of timezones using this command.

# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
....

2. Locate the correct timezone you need that is in the Indian timezone and set the specific timezone. There is a command called tzselect which can help you to find the desired timezone. For example, to find the timezone in India, use it as shown below :

# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
 1) Africa
 2) Americas
 3) Antarctica
 4) Arctic Ocean
 5) Asia
 6) Atlantic Ocean
 7) Australia
 8) Europe
 9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
#? 5
Please select a country.
 1) Afghanistan		  18) Israel		    35) Palestine
 2) Armenia		  19) Japan		    36) Philippines
 3) Azerbaijan		  20) Jordan		    37) Qatar
 4) Bahrain		  21) Kazakhstan	    38) Russia
 5) Bangladesh		  22) Korea (North)	    39) Saudi Arabia
 6) Bhutan		  23) Korea (South)	    40) Singapore
 7) Brunei	          24) Kuwait		    41) Sri Lanka
 8) Cambodia		  25) Kyrgyzstan	    42) Syria
 9) China		  26) Laos		    43) Taiwan
10) Cyprus		  27) Lebanon		    44) Tajikistan
11) East Timor		  28) Macau		    45) Thailand
12) Georgia		  29) Malaysia              46) Turkmenistan
13) Hong Kong		  30) Mongolia		    47) United Arab Emirates
14) India		  31) Myanmar (Burma)       48) Uzbekistan
15) Indonesia		  32) Nepal		    49) Vietnam
16) Iran		  33) Oman		    50) Yemen
17) Iraq		  34) Pakistan
#? 14

The following information has been given:

	India

Therefore TZ='Asia/Kolkata' will be used.
Local time is now:	Fri Aug 04 10:55:52 IST 2017.
Universal Time is now:	Fri Aug 04 05:25:52 UTC 2017.
Is the above information OK?
1) Yes
2) No
#? 

You can make this change permanent for yourself by appending the line
	TZ='Asia/Kolkata'; export TZ
to the file '.profile' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you
can use the /usr/bin/tzselect command in shell scripts:
Asia/Kolkata
# timedatectl set-timezone Asia/Kolkata

3. Run the “date” command to verify the changes.

# date
Fri Aug 04 11:03:43 IST 2017

You can also use the timedatectl status command to check the detailed status.

# timedatectl status
      Local time: Fri 2017-08-04 11:07:53 IST
  Universal time: Fri 2017-08-04 05:37:53 UTC
        RTC time: Fri 2017-08-04 05:37:53
       Time zone: Asia/Kolkata (IST, +0530)
     NTP enabled: no
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a

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