Change TimeZone in centos7

Change TimeZone in CentOS7 Before setting TimeZone to JST

date command output looks like this.

$ date
Thu May 21 01:01:03 UTC 2015

Change TimeZone

timedatectl set-timezone Asia/Tokyo

date command output after set to JST

$ date
Thu May 21 10:05:30 JST 2015
Written on May 21, 2015