sudo timedatectl set-local-rtc 1

$ timedatectl               
      Local time: 六 2016-04-23 09:05:54 CST
  Universal time: 六 2016-04-23 01:05:54 UTC
        RTC time: 六 2016-04-23 09:05:54
       Time zone: Asia/Shanghai (CST, +0800)
 Network time on: yes
NTP synchronized: no
 RTC in local TZ: yes

Warning: The system is configured to read the RTC time in the local time zone.
         This mode can not be fully supported. It will create various problems
         with time zone changes and daylight saving time adjustments. The RTC
         time is never updated, it relies on external facilities to maintain it.
         If at all possible, use RTC in UTC by calling
         'timedatectl set-local-rtc 0'.