```
[iyunv@docker ~]# timedatectl
Local time: Tue 2016-12-13 21:52:13 EST
Universal time: Wed 2016-12-14 02:52:13 UTC
RTC time: Wed 2016-12-14 02:52:13
Time zone: America/New_York (EST, -0500) //默认为西五区
NTP enabled: n/a
NTP synchronized: no
RTC in local TZ: no
DST active: no
Last DST change: DST ended at
Sun 2016-11-06 01:59:59 EDT
Sun 2016-11-06 01:00:00 EST
Next DST change: DST begins (the clock jumps one hour forward) at
Sun 2017-03-12 01:59:59 EST
Sun 2017-03-12 03:00:00 EDT
#修改为东八区
[iyunv@docker ~]# timedatectl set-timezone Asia/Shanghai
Local time: Wed 2016-12-14 10:53:10 CST
Universal time: Wed 2016-12-14 02:53:10 UTC
RTC time: Wed 2016-12-14 02:53:10
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: n/a
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
[iyunv@docker ~]# date
Wed Dec 14 10:53:49 CST 2016
#调整时间
[iyunv@docker ~]# date -s "2016-12-13 21:54:20"
#时间同步,不执行则无法生效
[iyunv@docker ~]# clock -w
[iyunv@docker ~]# timedatectl
Local time: Tue 2016-12-13 22:59:44 CST
Universal time: Tue 2016-12-13 14:59:44 UTC
RTC time: Tue 2016-12-13 14:59:44
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: n/a
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
```