UTC时间
[root@openstack01 ~]# timedatectl
Local time: Sat 2018-08-18 23:04:24 CST
Universal time: Sat 2018-08-18 15:04:24 UTC
RTC time: Sat 2018-08-18 15:04:24
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: no
DST active: n/a
[root@openstack01 ~]# date
Sat Aug 18 23:04:26 CST 2018