How to change server timezone

You can manage timezone using one simple command: timedatectl

First, view current settings:

[otsmanager@server ~]# sudo timedatectl 
      Local time: Sun 2015-12-27 01:31:46 UTC
  Universal time: Sun 2015-12-27 01:31:46 UTC
        RTC time: n/a
       Time zone: UTC (UTC, +0000)
 Network time on: no
NTP synchronized: yes
 RTC in local TZ: no

If necessary, change the timezone:

[otsmanager@server ~]# sudo timedatectl set-timezone America/New_York

If you want to know what time zones are available, execute:

[otsmanager@server ~]# sudo timedatectl list-timezones