timedatectl

centos7 中查看时区

[vagrant@localhost ~]$ timedatectl status
      Local time: Wed 2016-08-24 11:04:27 EDT
  Universal time: Wed 2016-08-24 15:04:27 UTC
        RTC time: Wed 2016-08-24 15:04:27
       Time zone: America/New_York (EDT, -0400)
     NTP enabled: n/a
NTP synchronized: no
 RTC in local TZ: no
      DST active: yes
 Last DST change: DST began at
                  Sun 2016-03-13 01:59:59 EST
                  Sun 2016-03-13 03:00:00 EDT
 Next DST change: DST ends (the clock jumps one hour backwards) at
                  Sun 2016-11-06 01:59:59 EDT
                  Sun 2016-11-06 01:00:00 EST

更改时区(sudo)

timedatectl set-timezone Asia/Shanghai

设置时间

timedatectl set-time '2013-06-02 23:26:00'

设置 ntp 时间同步

timedatectl set-ntp yes

官方文档
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/chap-Configuring_the_Date_and_Time.html